# EDGAR Filing Document

**Accession Number:** 0000891014
**File Stem:** 0001140361-25-036377
**Filing Date:** 2025-9
**Character Count:** 157719
**Document Hash:** 58ac76207cd58dbf8a67b30cbd5ee906
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-036377.hdr.sgml**: 20250929

**ACCESSION NUMBER**: 0001140361-25-036377

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 13

**FILED AS OF DATE**: 20250929

**DATE AS OF CHANGE**: 20250929

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MINERALS TECHNOLOGIES INC
- **CENTRAL INDEX KEY:** 0000891014
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL INORGANIC CHEMICALS [2810]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 251190717
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-11430
- **FILM NUMBER:** 251351988

**BUSINESS ADDRESS:**
- **STREET 1:** 622 THIRD AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017-6707
- **BUSINESS PHONE:** 212-878-1800

**MAIL ADDRESS:**
- **STREET 1:** 622 THIRD AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017-6707

------

**UNITED STATES<br>SECURITIES AND EXCHANGE COMMISSION<br>Washington, D.C. 20549**

**FORM SD**

**SPECIALIZED DISCLOSURE REPORT**

****

<br> ---

| |
|:---|
| **MINERALS TECHNOLOGIES INC.**  |
| (Exact name of registrant as specified in its charter)  |

---

---

| | | |
|:---|:---|:---|
| **Delaware**  | **1-11430**  | **25-1190717**  |
| (State or other jurisdiction of incorporation)  | (Commission File Number)  | (IRS Employer Identification No.)  |

---

---

| | |
|:---|:---|
| **622 Third Avenue, New York, NY**  | **10017-6707**  |
| (Address of principal executive offices)  | (Zip Code)  |

---

---

| |
|:---|
| **Timothy J. Jordan (212) 878-1800**  |
| (Name and telephone number, including area code, of the person to contact in connection with this report)  |

---

Check the appropriate box to indicate the rule pursuant to which this form is being filed:

☐ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2024.

☑ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2024.

------

**Section 2 – Resource Extraction Issuer Disclosure**

#### Item 2.01 Resource Extraction Issuer Disclosure and Report
**Disclosure of Payments by Resource Extraction Issuers**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (a) Minerals Technologies Inc. ("MTI" or the "Company") is a global, technology-driven specialty minerals company that develops, produces, and markets a wide range of minerals and mineral-based products and services. The Company utilizes global mineral reserves with our core technologies and applications to deliver innovative solutions for products that are part of everyday life.

The Company has two reportable segments: Consumer & Specialties and Engineered Solutions.

–

The Consumer & Specialties segment serves consumer end markets directly with mineral-to-market finished products and also provides specialty mineral-based solutions and technologies that are an essential component of our customers' finished products. The two product lines in this segment are Household & Personal Care and Specialty Additives.

–

The Engineered Solutions segment serves industrial end markets with engineered systems, mineral blends, and technologies that are designed to improve our customers' manufacturing processes and projects. The two product lines in this segment are High-Temperature Technologies and Environmental & Infrastructure.

This Form SD is filed by the Company pursuant to Rule 13q-1 under the Securities Exchange Act of 1934, as amended, for the period from January 1, 2024 to December 31, 2024 (the "Reporting Period"). The payment disclosure required by this Item 2.01 is included as Exhibit 2.01 to this Form SD.

All payments are reported in U.S. dollars. Payments that were made in currencies other than in U.S. dollars have been converted to U.S. dollars using the exchange rates as of December 31, 2024.

**Section 3 – Exhibits**

**Item 3.01 Exhibits**

The following exhibits are included as part of this report:

---

| | |
|:---|:---|
| [2.01](ef20056101_ex201.htm)  | Resource Extraction Payment Report for the fiscal year ended December 31, 2024 as required by Item 2.01 of this Form.  |
| 104  | Cover Page Interactive Data File (formatted as inline XBRL)  |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | |
|:---|:---|
| **MINERALS TECHNOLOGIES INC.**  | **MINERALS TECHNOLOGIES INC.**  |
| (Registrant)  | (Registrant)  |
| By:  | /s/ Timothy J. Jordan  |
| Name:  | Timothy J. Jordan  |
| Title:  | Vice President, General Counsel,  |
|  | Secretary and Chief Compliance Officer  |

---

Date: September 29, 2025

------

## Ex-2

------

Exhibit 2.01

**Resource Extraction Payment Report for Minerals Technologies Inc.**

**For the fiscal year ended December 31, 2024**

**Project-level disclosure**

The table below sets forth our payments made to governments, by project and type of payment.

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 |
|  | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* |
| **Project**  | **Taxes** | **Royalties**  | **Fees** | **Productio<br> entitlements** | **Bonuses** | **Dividends** | **Payments for Infrastructure improvements** | **Communit<br> and socia<br> responsibilit<br> payments** | **TOTAL** |
| **United States**  |  |  |  |  |  |  |  |  |  |
| U.S. Federal Government  | 20819<sup>(2)</sup> |  |  |  |  |  |  |  | 20819 |
| Adams  |  |  |  |  |  |  |  |  |  |
| Canaan  |  |  |  |  |  |  |  |  |  |
| Lucerne Valley  |  |  | 69 |  |  |  |  |  | 69 |
| Pima County  |  |  | 10 |  |  |  |  |  | 10 |
| Barretts  |  |  |  |  |  |  |  |  |  |
| Colony - Montana  |  |  | 176 |  |  |  |  |  | 176 |
| Colony - South Dakota  |  |  | 66 |  |  |  |  |  | 66 |
| Colony - Wyoming  |  |  | 138 |  |  |  |  |  | 138 |
| Lovell - Montana  |  |  | 99 |  |  |  |  |  | 99 |
| Lovell - Wyoming  |  |  | 393 |  |  |  |  |  | 393 |
| Nevada  |  |  | 41 |  |  |  |  |  | 41 |
| Sandy Ridge  |  |  |  |  |  |  |  |  |  |
| Gascoyne  |  |  |  |  |  |  |  |  |  |
| **China**  |  |  |  |  |  |  |  |  |  |
| Government of China  | 5816<sup>(3)</sup> |  |  |  |  |  |  |  | 5816 |
| Chao Yang  | 946<sup>(4)</sup> |  |  |  |  |  |  | 1 | 947 |
| **Slovakia**  |  |  |  |  |  |  |  |  |  |
| Lutila  | 147<sup>(5)</sup> | 54 | 22 |  |  |  |  |  | 223 |
| **Turkey**  |  |  |  |  |  |  |  |  |  |
| Government of Turkey  | 3693<sup>(6)</sup> |  |  |  |  |  |  |  | 3693 |
| Unye  |  | 142 | 206 |  |  |  |  |  | 348 |
| Enez  |  | 22 | 197 |  |  |  |  |  | 219 |
| Usak  |  |  | 68 |  |  |  |  |  | 68 |
| **Australia**  |  |  |  |  |  |  |  |  |  |
| Gurulmundi  | 233<sup>(7)</sup> | 49 | 9 |  |  |  |  |  | 291 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) All payments are reported in U.S. dollars. Payments relating to the project in China were made in renminbi, payments relating to the project in Slovakia were made in euros, payments relating to the projects in Turkey were made in Turkish lira, and payments relating to the project in Australia were made in Australian dollars. Such payments made in currencies other than in U.S. dollars have been converted to U.S. dollars using the exchange rates as of December 31, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) The Company files a consolidated U.S. federal corporate income tax return at the parent entity level for itself and its U.S. subsidiaries, which includes all of its U.S. entities including those holding the U.S. projects listed. The tax payments reported are the payments made by the Company to the U.S. federal government during the fiscal year ended December 31, 2024 at the consolidated group level. The tax payments relate to the consolidated U.S. income of the Company, not to particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of China relating to the entity holding the Chao Yang project. The payments relate to the income of such entity, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Represents resource taxes paid to the Jianping tax authority relating to the Chao Yang project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(5) Represents income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of the Slovak Republic relating to the entities holding the Lutila project, netted against refunds received. The payments relate to the income of such entities, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(6) Represents income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Turkey relating to the entities holding the Unye, Enez, and Usak projects. The payments relate to the income of such entities, not to the particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(7) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Australia relating to the entity holding the Gurulmundi project, netted against refunds received. The payments relate to the income of such entity, not to the particular project.

------

Exhibit 2.01

**Project Detail**

The table below sets forth details of payments made to governments.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Project**  | **Major** <br> **Subnational** <br> **Political** <br> **Jurisdiction**  | **Segment**  | **Resource**  | **Extraction** <br> **Method**  | **Government**  | **Amount** <br> *(Thousands of US$)* <br> <sup>(1)</sup> |
| **United States**  |  |  |  |  |  |  |
| U.S. Federal Government<sup>(2)</sup>  |  |  |  |  | U.S. Federal Government  | 20819 |
| Adams  | Massachusetts  | Consumer & Specialties  | Limestone  | Open Pit  | –  |  |
| Canaan  | Connecticut  | Consumer & Specialties  | Limestone  | Open Pit  | –  |  |
| Lucerne Valley  | California  | Consumer & Specialties  | Limestone  | Open Pit  | U.S. Federal Government  | 69 |
| Pima County  | Arizona  | Consumer & Specialties  | Limestone  | Open Pit  | U.S. Federal Government  | 10 |
| Barretts  | Montana  | Consumer & Specialties  | Talc  | Open Pit  | –  |  |
| Colony – Montana<sup>(3)</sup>  | Montana  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 176 |
| Colony – South Dakota<sup>(3)</sup>  | South Dakota  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 66 |
| Colony – Wyoming<sup>(3)</sup>  | Wyoming  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 138 |
| Lovell – Montana<sup>(4)</sup>  | Montana  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 99 |
| Lovell – Wyoming<sup>(4)</sup>  | Wyoming  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 393 |
| Nevada  | Nevada  | Both  | Bentonite  | Open Pit  | U.S. Federal Government  | 41 |
| Sandy Ridge  | Alabama  | Both  | Bentonite  | Open Pit  | –  |  |
| Gascoyne  | North Dakota  | Both  | Leonardite  | Open Pit  | –  |  |
| **China**  |  |  |  |  |  |  |
| Government of China<sup>(5)</sup>  |  |  |  |  | Government of China  | 5816 |
| Chao Yang  | Liaoning  | Both  | Bentonite  | Open Pit  | Jianping Tax Authority  | 947 |
| **Slovakia**  |  |  |  |  |  |  |
| Lutila<sup>(6)</sup>  | Banska Bystrica  | Consumer & Specialties  | Bentonite  | Open Pit  | Government of the Slovak Republic  | 223 |
| **Turkey**  |  |  |  |  |  |  |
| Government of Turkey<sup>(7)</sup>  |  |  |  |  | Government of Turkey  | 3693 |
| Unye  | Ordu  | Consumer & Specialties  | Bentonite  | Open Pit  | Government of Turkey  | 348 |
| Enez  | Edirne  | Both  | Bentonite  | Open Pit  | Government of Turkey  | 219 |
| Usak  | Usak  | Consumer & Specialties  | Bentonite  | Open Pit  | Government of Turkey  | 68 |
| **Australia**  |  |  |  |  |  |  |
| Gurulmundi<sup>(8)</sup>  | Queensland  | Both  | Bentonite  | Open Pit  | Australia Federal Government  | 233 |
| Gurulmundi  | Queensland  | Both  | Bentonite  | Open Pit  | Queensland State Government  | 58 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) All payments are reported in U.S. dollars. Payments relating to the project in China were made in renminbi, payments relating to the project in Slovakia were made in euros, payments relating to the projects in Turkey were made in Turkish lira, and payments relating to the project in Australia were made in Australian dollars. Such payments made in currencies other than in U.S. dollars have been converted to U.S. dollars using the exchange rates as of December 31, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) The Company files a consolidated U.S. federal corporate income tax return at the parent entity level for itself and its U.S. subsidiaries, which includes all of its U.S. entities including those holding the U.S. projects listed. The tax payments reported are the payments made by the Company to the U.S. federal government during the fiscal year ended December 31, 2024 at the consolidated group level. The tax payments relate to the consolidated U.S. income of the Company, not to particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Mining relating to our Colony, Wyoming facility is conducted in Montana, South Dakota, and Wyoming. For purposes of this Report, each of such mining areas is disclosed as a separate project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Mining relating to our Lovell, Wyoming facility is conducted in Montana and Wyoming. For purposes of this Report, each of such mining areas is disclosed as a separate project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(5) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of China relating to the entity holding the Chao Yang project. The payments relate to the income of such entity, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(6) Includes income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of the Slovak Republic relating to the entities holding the Lutila project, netted against refunds received. The payments relate to the income of such entities, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(7) Represents income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Turkey relating to the entities holding the Unye, Enez, and Usak projects. The payments relate to the income of such entities, not to the particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(8) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Australia relating to the entity holding the Gurulmundi project, netted against refunds received. The payments relate to the income of such entity, not to the particular project.

------

Exhibit 2.01

**Government-level disclosure**

The table below sets forth our payments made to governments, by government and type of payment.

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 |
|  | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* | *(Thousands of US$)<sup>(1)</sup>* |
| **Project**  | **Taxes** | **Royalties** | **Fees** | **Production entitlements** | **Bonuses** | **Dividends** | **Payments for Infrastructure improvements** | **Community and social responsibility payments** | **TOTAL** |
| **United States**  |  |  |  |  |  |  |  |  |  |
| U.S. Federal Government<sup>(2)</sup>  | 20819 |  | 992 |  |  |  |  |  | 21811 |
| **China**  |  |  |  |  |  |  |  |  |  |
| Government of China<sup>(3)</sup>  | 5816 |  |  |  |  |  |  |  | 5816 |
| Jianping Tax Authority  | 946 |  |  |  |  |  |  | 1 | 947 |
| **Slovakia**  |  |  |  |  |  |  |  |  |  |
| Government of the Slovak Republic<sup>(4)</sup>  | 147 | 54 | 22 |  |  |  |  |  | 223 |
| **Turkey**  |  |  |  |  |  |  |  |  |  |
| Government of Turkey<sup>(5)</sup>  | 3693 | 164 | 471 |  |  |  |  |  | 4328 |
| **Australia**  |  |  |  |  |  |  |  |  |  |
| Australia Federal Government<sup>(6)</sup>  | 233 |  |  |  |  |  |  |  | 233 |
| Queensland State Government  |  | 49 | 9 |  |  |  |  |  | 58 |
| **TOTAL**  | **31654** | **267** | **1494** |  |  |  |  | **1** | **33416** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) All payments are reported in U.S. dollars. Payments relating to the project in China were made in renminbi, payments relating to the project in Slovakia were made in euros, payments relating to the projects in Turkey were made in Turkish lira, and payments relating to the project in Australia were made in Australian dollars. Such payments made in currencies other than in U.S. dollars have been converted to U.S. dollars using the exchange rates as of December 31, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) The Company files a consolidated U.S. federal corporate income tax return at the parent entity level for itself and its U.S. subsidiaries, which includes all of its U.S. entities including those holding the U.S. projects listed. The tax payments reported are the payments made by the Company to the U.S. federal government during the fiscal year ended December 31, 2024 at the consolidated group level. The tax payments relate to the consolidated U.S. income of the Company, not to particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of China relating to the entity holding the Chao Yang project. The payments relate to the income of such entity, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Includes income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of the Slovak Republic relating to the entities holding the Lutila project, netted against refunds received. The payments relate to the income of such entities, not to the particular project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(5) Includes income taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Turkey relating to the entities holding the Unye, Enez, and Usak projects. The payments relate to the income of such entities, not to the particular projects.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(6) Represents income and withholding taxes paid during the fiscal year ended December 31, 2024 at the entity level to the Government of Australia relating to the entity holding the Gurulmundi project, netted against refunds received. The payments relate to the income of such entity, not to the particular project.

------

## Exhibit 2.01

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  <rxp:Gv contextRef="c21_From1Jan2024To31Dec2024_21">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c21_From1Jan2024To31Dec2024_21">mtx:GovernmentOfTurkeyByProjectMember</rxp:Pr>
  <rxp:A unitRef="USD" contextRef="c22_From1Jan2024To31Dec2024_22" decimals="-1">142000</rxp:A>
  <rxp:P contextRef="c22_From1Jan2024To31Dec2024_22">rxp:Royalties</rxp:P>
  <rxp:Co contextRef="c22_From1Jan2024To31Dec2024_22">country:TR</rxp:Co>
  <rxp:Sn contextRef="c22_From1Jan2024To31Dec2024_22">snj:TR-52</rxp:Sn>
  <rxp:Gv contextRef="c22_From1Jan2024To31Dec2024_22">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c22_From1Jan2024To31Dec2024_22">mtx:UnyeMember</rxp:Pr>
  <rxp:R contextRef="c22_From1Jan2024To31Dec2024_22">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c22_From1Jan2024To31Dec2024_22">mtx:ConsumerAndSpecialtiesMember</rxp:Sg>
  <rxp:M contextRef="c22_From1Jan2024To31Dec2024_22">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c23_From1Jan2024To31Dec2024_23" decimals="-1">206000</rxp:A>
  <rxp:P contextRef="c23_From1Jan2024To31Dec2024_23">rxp:Fees</rxp:P>
  <rxp:Co contextRef="c23_From1Jan2024To31Dec2024_23">country:TR</rxp:Co>
  <rxp:Sn contextRef="c23_From1Jan2024To31Dec2024_23">snj:TR-52</rxp:Sn>
  <rxp:Gv contextRef="c23_From1Jan2024To31Dec2024_23">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c23_From1Jan2024To31Dec2024_23">mtx:UnyeMember</rxp:Pr>
  <rxp:R contextRef="c23_From1Jan2024To31Dec2024_23">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c23_From1Jan2024To31Dec2024_23">mtx:ConsumerAndSpecialtiesMember</rxp:Sg>
  <rxp:M contextRef="c23_From1Jan2024To31Dec2024_23">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c24_From1Jan2024To31Dec2024_24" decimals="-1">22000</rxp:A>
  <rxp:P contextRef="c24_From1Jan2024To31Dec2024_24">rxp:Royalties</rxp:P>
  <rxp:Co contextRef="c24_From1Jan2024To31Dec2024_24">country:TR</rxp:Co>
  <rxp:Sn contextRef="c24_From1Jan2024To31Dec2024_24">snj:TR-22</rxp:Sn>
  <rxp:Gv contextRef="c24_From1Jan2024To31Dec2024_24">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c24_From1Jan2024To31Dec2024_24">mtx:EnezMember</rxp:Pr>
  <rxp:R contextRef="c24_From1Jan2024To31Dec2024_24">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c24_From1Jan2024To31Dec2024_24">mtx:ConsumerAndSpecialtiesAndEngineeredSolutionsMember</rxp:Sg>
  <rxp:M contextRef="c24_From1Jan2024To31Dec2024_24">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c25_From1Jan2024To31Dec2024_25" decimals="-1">197000</rxp:A>
  <rxp:P contextRef="c25_From1Jan2024To31Dec2024_25">rxp:Fees</rxp:P>
  <rxp:Co contextRef="c25_From1Jan2024To31Dec2024_25">country:TR</rxp:Co>
  <rxp:Sn contextRef="c25_From1Jan2024To31Dec2024_25">snj:TR-22</rxp:Sn>
  <rxp:Gv contextRef="c25_From1Jan2024To31Dec2024_25">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c25_From1Jan2024To31Dec2024_25">mtx:EnezMember</rxp:Pr>
  <rxp:R contextRef="c25_From1Jan2024To31Dec2024_25">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c25_From1Jan2024To31Dec2024_25">mtx:ConsumerAndSpecialtiesAndEngineeredSolutionsMember</rxp:Sg>
  <rxp:M contextRef="c25_From1Jan2024To31Dec2024_25">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c26_From1Jan2024To31Dec2024_26" decimals="-1">68000</rxp:A>
  <rxp:P contextRef="c26_From1Jan2024To31Dec2024_26">rxp:Fees</rxp:P>
  <rxp:Co contextRef="c26_From1Jan2024To31Dec2024_26">country:TR</rxp:Co>
  <rxp:Sn contextRef="c26_From1Jan2024To31Dec2024_26">snj:TR-64</rxp:Sn>
  <rxp:Gv contextRef="c26_From1Jan2024To31Dec2024_26">mtx:GovernmentOfTurkeyMember</rxp:Gv>
  <rxp:Pr contextRef="c26_From1Jan2024To31Dec2024_26">mtx:UsakMember</rxp:Pr>
  <rxp:R contextRef="c26_From1Jan2024To31Dec2024_26">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c26_From1Jan2024To31Dec2024_26">mtx:ConsumerAndSpecialtiesMember</rxp:Sg>
  <rxp:M contextRef="c26_From1Jan2024To31Dec2024_26">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c27_From1Jan2024To31Dec2024_27" decimals="-1">233000</rxp:A>
  <rxp:P contextRef="c27_From1Jan2024To31Dec2024_27">rxp:Taxes</rxp:P>
  <rxp:Co contextRef="c27_From1Jan2024To31Dec2024_27">country:AU</rxp:Co>
  <rxp:Sn contextRef="c27_From1Jan2024To31Dec2024_27">snj:AU-QLD</rxp:Sn>
  <rxp:Gv contextRef="c27_From1Jan2024To31Dec2024_27">mtx:AustraliaFederalGovernmentMember</rxp:Gv>
  <rxp:Pr contextRef="c27_From1Jan2024To31Dec2024_27">mtx:GurulmundiMember</rxp:Pr>
  <rxp:R contextRef="c27_From1Jan2024To31Dec2024_27">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c27_From1Jan2024To31Dec2024_27">mtx:ConsumerAndSpecialtiesAndEngineeredSolutionsMember</rxp:Sg>
  <rxp:M contextRef="c27_From1Jan2024To31Dec2024_27">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c28_From1Jan2024To31Dec2024_28" decimals="-1">49000</rxp:A>
  <rxp:P contextRef="c28_From1Jan2024To31Dec2024_28">rxp:Royalties</rxp:P>
  <rxp:Co contextRef="c28_From1Jan2024To31Dec2024_28">country:AU</rxp:Co>
  <rxp:Sn contextRef="c28_From1Jan2024To31Dec2024_28">snj:AU-QLD</rxp:Sn>
  <rxp:Gv contextRef="c28_From1Jan2024To31Dec2024_28">mtx:QueenslandStateGovernmentMember</rxp:Gv>
  <rxp:Pr contextRef="c28_From1Jan2024To31Dec2024_28">mtx:GurulmundiMember</rxp:Pr>
  <rxp:R contextRef="c28_From1Jan2024To31Dec2024_28">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c28_From1Jan2024To31Dec2024_28">mtx:ConsumerAndSpecialtiesAndEngineeredSolutionsMember</rxp:Sg>
  <rxp:M contextRef="c28_From1Jan2024To31Dec2024_28">Open Pit</rxp:M>
  <rxp:A unitRef="USD" contextRef="c29_From1Jan2024To31Dec2024_29" decimals="-1">9000</rxp:A>
  <rxp:P contextRef="c29_From1Jan2024To31Dec2024_29">rxp:Fees</rxp:P>
  <rxp:Co contextRef="c29_From1Jan2024To31Dec2024_29">country:AU</rxp:Co>
  <rxp:Sn contextRef="c29_From1Jan2024To31Dec2024_29">snj:AU-QLD</rxp:Sn>
  <rxp:Gv contextRef="c29_From1Jan2024To31Dec2024_29">mtx:QueenslandStateGovernmentMember</rxp:Gv>
  <rxp:Pr contextRef="c29_From1Jan2024To31Dec2024_29">mtx:GurulmundiMember</rxp:Pr>
  <rxp:R contextRef="c29_From1Jan2024To31Dec2024_29">mtx:BentoniteMember</rxp:R>
  <rxp:Sg contextRef="c29_From1Jan2024To31Dec2024_29">mtx:ConsumerAndSpecialtiesAndEngineeredSolutionsMember</rxp:Sg>
  <rxp:M contextRef="c29_From1Jan2024To31Dec2024_29">Open Pit</rxp:M>
  <rxp:Taxes unitRef="USD" contextRef="c30_From1Jan2024To31Dec2024_USFederalGovernmentByProjectMember" decimals="-1">20819000</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c30_From1Jan2024To31Dec2024_USFederalGovernmentByProjectMember" decimals="-1">20819000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c31_From1Jan2024To31Dec2024_AdamsMember" decimals="-1">0</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c31_From1Jan2024To31Dec2024_AdamsMember" decimals="-1">0</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c32_From1Jan2024To31Dec2024_CanaanMember" decimals="-1">0</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c32_From1Jan2024To31Dec2024_CanaanMember" decimals="-1">0</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c33_From1Jan2024To31Dec2024_LucerneValleyMember" decimals="-1">69000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c33_From1Jan2024To31Dec2024_LucerneValleyMember" decimals="-1">69000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c34_From1Jan2024To31Dec2024_PimaCountyMember" decimals="-1">10000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c34_From1Jan2024To31Dec2024_PimaCountyMember" decimals="-1">10000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c35_From1Jan2024To31Dec2024_BarrettsMember" decimals="-1">0</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c35_From1Jan2024To31Dec2024_BarrettsMember" decimals="-1">0</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c36_From1Jan2024To31Dec2024_ColonyMontanaMember" decimals="-1">176000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c36_From1Jan2024To31Dec2024_ColonyMontanaMember" decimals="-1">176000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c37_From1Jan2024To31Dec2024_ColonySouthDakotaMember" decimals="-1">66000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c37_From1Jan2024To31Dec2024_ColonySouthDakotaMember" decimals="-1">66000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c38_From1Jan2024To31Dec2024_ColonyWyomingMember" decimals="-1">138000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c38_From1Jan2024To31Dec2024_ColonyWyomingMember" decimals="-1">138000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c39_From1Jan2024To31Dec2024_LovellMontanaMember" decimals="-1">99000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c39_From1Jan2024To31Dec2024_LovellMontanaMember" decimals="-1">99000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c40_From1Jan2024To31Dec2024_LovellWyomingMember" decimals="-1">393000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c40_From1Jan2024To31Dec2024_LovellWyomingMember" decimals="-1">393000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c41_From1Jan2024To31Dec2024_NevadaMember" decimals="-1">41000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c41_From1Jan2024To31Dec2024_NevadaMember" decimals="-1">41000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c42_From1Jan2024To31Dec2024_SandyRidgeMember" decimals="-1">0</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c42_From1Jan2024To31Dec2024_SandyRidgeMember" decimals="-1">0</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c43_From1Jan2024To31Dec2024_GascoyneMember" decimals="-1">0</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c43_From1Jan2024To31Dec2024_GascoyneMember" decimals="-1">0</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c44_From1Jan2024To31Dec2024_GovernmentOfChinaByProjectMember" decimals="-1">5816000</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c44_From1Jan2024To31Dec2024_GovernmentOfChinaByProjectMember" decimals="-1">5816000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c45_From1Jan2024To31Dec2024_ChaoYangMember" decimals="-1">946000</rxp:Taxes>
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  <rxp:TotalPayments unitRef="USD" contextRef="c45_From1Jan2024To31Dec2024_ChaoYangMember" decimals="-1">947000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c46_From1Jan2024To31Dec2024_LutilaMember" decimals="-1">147000</rxp:Taxes>
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  <rxp:Fees unitRef="USD" contextRef="c46_From1Jan2024To31Dec2024_LutilaMember" decimals="-1">22000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c46_From1Jan2024To31Dec2024_LutilaMember" decimals="-3">223000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c47_From1Jan2024To31Dec2024_GovernmentOfTurkeyByProjectMember" decimals="-1">3693000</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c47_From1Jan2024To31Dec2024_GovernmentOfTurkeyByProjectMember" decimals="-1">3693000</rxp:TotalPayments>
  <rxp:Royalties unitRef="USD" contextRef="c48_From1Jan2024To31Dec2024_UnyeMember" decimals="-1">142000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c48_From1Jan2024To31Dec2024_UnyeMember" decimals="-1">206000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c48_From1Jan2024To31Dec2024_UnyeMember" decimals="-3">348000</rxp:TotalPayments>
  <rxp:Royalties unitRef="USD" contextRef="c49_From1Jan2024To31Dec2024_EnezMember" decimals="-1">22000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c49_From1Jan2024To31Dec2024_EnezMember" decimals="-1">197000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c49_From1Jan2024To31Dec2024_EnezMember" decimals="-3">219000</rxp:TotalPayments>
  <rxp:Fees unitRef="USD" contextRef="c50_From1Jan2024To31Dec2024_UsakMember" decimals="-1">68000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c50_From1Jan2024To31Dec2024_UsakMember" decimals="-1">68000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c51_From1Jan2024To31Dec2024_GurulmundiMember" decimals="-1">233000</rxp:Taxes>
  <rxp:Royalties unitRef="USD" contextRef="c51_From1Jan2024To31Dec2024_GurulmundiMember" decimals="-1">49000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c51_From1Jan2024To31Dec2024_GurulmundiMember" decimals="-1">9000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c51_From1Jan2024To31Dec2024_GurulmundiMember" decimals="-1">291000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c52_From1Jan2024To31Dec2024_US_USFederalGovernmentMember" decimals="-1">20819000</rxp:Taxes>
  <rxp:Fees unitRef="USD" contextRef="c52_From1Jan2024To31Dec2024_US_USFederalGovernmentMember" decimals="-3">992000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c52_From1Jan2024To31Dec2024_US_USFederalGovernmentMember" decimals="-3">21811000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c53_From1Jan2024To31Dec2024_CN_GovernmentOfChinaMember" decimals="-1">5816000</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c53_From1Jan2024To31Dec2024_CN_GovernmentOfChinaMember" decimals="-1">5816000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c54_From1Jan2024To31Dec2024_CN_JianpingTaxAuthorityMember" decimals="-1">946000</rxp:Taxes>
  <rxp:CommunityAndSocial unitRef="USD" contextRef="c54_From1Jan2024To31Dec2024_CN_JianpingTaxAuthorityMember" decimals="-1">1000</rxp:CommunityAndSocial>
  <rxp:TotalPayments unitRef="USD" contextRef="c54_From1Jan2024To31Dec2024_CN_JianpingTaxAuthorityMember" decimals="-1">947000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c55_From1Jan2024To31Dec2024_SK_GovernmentOfTheSlovakRepublicMember" decimals="-1">147000</rxp:Taxes>
  <rxp:Royalties unitRef="USD" contextRef="c55_From1Jan2024To31Dec2024_SK_GovernmentOfTheSlovakRepublicMember" decimals="-1">54000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c55_From1Jan2024To31Dec2024_SK_GovernmentOfTheSlovakRepublicMember" decimals="-1">22000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c55_From1Jan2024To31Dec2024_SK_GovernmentOfTheSlovakRepublicMember" decimals="-3">223000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c56_From1Jan2024To31Dec2024_TR_GovernmentOfTurkeyMember" decimals="-1">3693000</rxp:Taxes>
  <rxp:Royalties unitRef="USD" contextRef="c56_From1Jan2024To31Dec2024_TR_GovernmentOfTurkeyMember" decimals="-3">164000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c56_From1Jan2024To31Dec2024_TR_GovernmentOfTurkeyMember" decimals="-3">471000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c56_From1Jan2024To31Dec2024_TR_GovernmentOfTurkeyMember" decimals="-3">4328000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c57_From1Jan2024To31Dec2024_AU_AustraliaFederalGovernmentMember" decimals="-1">233000</rxp:Taxes>
  <rxp:TotalPayments unitRef="USD" contextRef="c57_From1Jan2024To31Dec2024_AU_AustraliaFederalGovernmentMember" decimals="-1">233000</rxp:TotalPayments>
  <rxp:Royalties unitRef="USD" contextRef="c58_From1Jan2024To31Dec2024_AU_QueenslandStateGovernmentMember" decimals="-1">49000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c58_From1Jan2024To31Dec2024_AU_QueenslandStateGovernmentMember" decimals="-1">9000</rxp:Fees>
  <rxp:TotalPayments unitRef="USD" contextRef="c58_From1Jan2024To31Dec2024_AU_QueenslandStateGovernmentMember" decimals="-1">58000</rxp:TotalPayments>
  <rxp:Taxes unitRef="USD" contextRef="c0_From1Jan2024To31Dec2024" decimals="-1">31654000</rxp:Taxes>
  <rxp:Royalties unitRef="USD" contextRef="c0_From1Jan2024To31Dec2024" decimals="-1">267000</rxp:Royalties>
  <rxp:Fees unitRef="USD" contextRef="c0_From1Jan2024To31Dec2024" decimals="-1">1494000</rxp:Fees>
  <rxp:CommunityAndSocial unitRef="USD" contextRef="c0_From1Jan2024To31Dec2024" decimals="-1">1000</rxp:CommunityAndSocial>
  <rxp:TotalPayments unitRef="USD" contextRef="c0_From1Jan2024To31Dec2024" decimals="-3">33416000</rxp:TotalPayments>
</xbrl>
</XBRL>

```

## Exhibit 2.01

```

<XBRL>
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  <xs:annotation>
    <xs:appinfo>
      <link:linkbase>
        <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#GovernmentsOnly" roleURI="http://xbrl.sec.gov/rxp/role/GovernmentsOnly"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ByGovernment" roleURI="http://xbrl.sec.gov/rxp/role/ByGovernment"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ProjectsOnly" roleURI="http://xbrl.sec.gov/rxp/role/ProjectsOnly"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ByProject" roleURI="http://xbrl.sec.gov/rxp/role/ByProject"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ResourcesOnly" roleURI="http://xbrl.sec.gov/rxp/role/ResourcesOnly"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#SegmentsOnly" roleURI="http://xbrl.sec.gov/rxp/role/SegmentsOnly"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#EntitiesOnly" roleURI="http://xbrl.sec.gov/rxp/role/EntitiesOnly"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ByCategory" roleURI="http://xbrl.sec.gov/rxp/role/ByCategory"/>
        <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#Detail" roleURI="http://xbrl.sec.gov/rxp/role/Detail"/>
        <link:definitionLink xlink:role="http://xbrl.sec.gov/rxp/role/GovernmentsOnly" xlink:type="extended">
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          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_GascoyneMember_lbl" xml:lang="en-US">Gascoyne [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GascoyneMember" xlink:to="mtx_GascoyneMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_GascoyneMember_lbl0" xml:lang="en-US">Gascoyne</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GascoyneMember" xlink:to="mtx_GascoyneMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_GovernmentOfChinaByProjectMember" xlink:href="#mtx_GovernmentOfChinaByProjectMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_GovernmentOfChinaByProjectMember_lbl" xml:lang="en-US">Government of China by Project [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GovernmentOfChinaByProjectMember" xlink:to="mtx_GovernmentOfChinaByProjectMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_GovernmentOfChinaByProjectMember_lbl0" xml:lang="en-US">Government of China</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GovernmentOfChinaByProjectMember" xlink:to="mtx_GovernmentOfChinaByProjectMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_ChaoYangMember" xlink:href="#mtx_ChaoYangMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_ChaoYangMember_lbl" xml:lang="en-US">Chao Yang [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ChaoYangMember" xlink:to="mtx_ChaoYangMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_ChaoYangMember_lbl0" xml:lang="en-US">Chao Yang</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ChaoYangMember" xlink:to="mtx_ChaoYangMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_LutilaMember" xlink:href="#mtx_LutilaMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_LutilaMember_lbl" xml:lang="en-US">Lutila [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LutilaMember" xlink:to="mtx_LutilaMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_LutilaMember_lbl0" xml:lang="en-US">Lutila</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LutilaMember" xlink:to="mtx_LutilaMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_GovernmentOfTurkeyByProjectMember" xlink:href="#mtx_GovernmentOfTurkeyByProjectMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_GovernmentOfTurkeyByProjectMember_lbl" xml:lang="en-US">Government of Turkey by Project [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GovernmentOfTurkeyByProjectMember" xlink:to="mtx_GovernmentOfTurkeyByProjectMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_GovernmentOfTurkeyByProjectMember_lbl0" xml:lang="en-US">Government of Turkey</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GovernmentOfTurkeyByProjectMember" xlink:to="mtx_GovernmentOfTurkeyByProjectMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_UnyeMember" xlink:href="#mtx_UnyeMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_UnyeMember_lbl" xml:lang="en-US">Unye [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_UnyeMember" xlink:to="mtx_UnyeMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_UnyeMember_lbl0" xml:lang="en-US">Unye</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_UnyeMember" xlink:to="mtx_UnyeMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_EnezMember" xlink:href="#mtx_EnezMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_EnezMember_lbl" xml:lang="en-US">Enez [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_EnezMember" xlink:to="mtx_EnezMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_EnezMember_lbl0" xml:lang="en-US">Enez</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_EnezMember" xlink:to="mtx_EnezMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_UsakMember" xlink:href="#mtx_UsakMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_UsakMember_lbl" xml:lang="en-US">Usak [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_UsakMember" xlink:to="mtx_UsakMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_UsakMember_lbl0" xml:lang="en-US">Usak</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_UsakMember" xlink:to="mtx_UsakMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_GurulmundiMember" xlink:href="#mtx_GurulmundiMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_GurulmundiMember_lbl" xml:lang="en-US">Gurulmundi [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GurulmundiMember" xlink:to="mtx_GurulmundiMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_GurulmundiMember_lbl0" xml:lang="en-US">Gurulmundi</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_GurulmundiMember" xlink:to="mtx_GurulmundiMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_LimestoneMember" xlink:href="#mtx_LimestoneMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_LimestoneMember_lbl" xml:lang="en-US">Limestone [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LimestoneMember" xlink:to="mtx_LimestoneMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_LimestoneMember_lbl0" xml:lang="en-US">Limestone</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LimestoneMember" xlink:to="mtx_LimestoneMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_TalcMember" xlink:href="#mtx_TalcMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_TalcMember_lbl" xml:lang="en-US">Talc [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_TalcMember" xlink:to="mtx_TalcMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_TalcMember_lbl0" xml:lang="en-US">Talc</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_TalcMember" xlink:to="mtx_TalcMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_BentoniteMember" xlink:href="#mtx_BentoniteMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_BentoniteMember_lbl" xml:lang="en-US">Bentonite [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_BentoniteMember" xlink:to="mtx_BentoniteMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_BentoniteMember_lbl0" xml:lang="en-US">Bentonite</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_BentoniteMember" xlink:to="mtx_BentoniteMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_LeonarditeMember" xlink:href="#mtx_LeonarditeMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_LeonarditeMember_lbl" xml:lang="en-US">Leonardite [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LeonarditeMember" xlink:to="mtx_LeonarditeMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_LeonarditeMember_lbl0" xml:lang="en-US">Leonardite</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_LeonarditeMember" xlink:to="mtx_LeonarditeMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_ConsumerAndSpecialtiesMember" xlink:href="#mtx_ConsumerAndSpecialtiesMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_ConsumerAndSpecialtiesMember_lbl" xml:lang="en-US">Consumer & Specialties [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ConsumerAndSpecialtiesMember" xlink:to="mtx_ConsumerAndSpecialtiesMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_ConsumerAndSpecialtiesMember_lbl0" xml:lang="en-US">Consumer & Specialties</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ConsumerAndSpecialtiesMember" xlink:to="mtx_ConsumerAndSpecialtiesMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember" xlink:href="#mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember_lbl" xml:lang="en-US">Consumer & Specialties and Engineered Solutions [Member]</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember" xlink:to="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember_lbl0" xml:lang="en-US">Consumer & Specialties and Engineered Solutions</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember" xlink:to="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember_lbl0"/>
          <loc xlink:type="locator" xlink:label="country_US" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_US_lbl" xml:lang="en-US">UNITED STATES</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl"/>
          <loc xlink:type="locator" xlink:label="snj_US-MA" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-MA"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-MA_lbl" xml:lang="en-US">US-MA</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-MA" xlink:to="snj_US-MA_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-MA_lbl0" xml:lang="en-US">Massachusetts</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-MA" xlink:to="snj_US-MA_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-CT" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-CT"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-CT_lbl" xml:lang="en-US">US-CT</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-CT" xlink:to="snj_US-CT_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-CT_lbl0" xml:lang="en-US">Connecticut</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-CT" xlink:to="snj_US-CT_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-CA" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-CA"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-CA_lbl" xml:lang="en-US">US-CA</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-CA" xlink:to="snj_US-CA_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-CA_lbl0" xml:lang="en-US">California</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-CA" xlink:to="snj_US-CA_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-AZ" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-AZ"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-AZ_lbl" xml:lang="en-US">US-AZ</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-AZ" xlink:to="snj_US-AZ_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-AZ_lbl0" xml:lang="en-US">Arizona</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-AZ" xlink:to="snj_US-AZ_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-MT" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-MT"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-MT_lbl" xml:lang="en-US">US-MT</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-MT" xlink:to="snj_US-MT_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-MT_lbl0" xml:lang="en-US">Montana</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-MT" xlink:to="snj_US-MT_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-SD" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-SD"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-SD_lbl" xml:lang="en-US">US-SD</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-SD" xlink:to="snj_US-SD_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-SD_lbl0" xml:lang="en-US">South Dakota</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-SD" xlink:to="snj_US-SD_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-WY" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-WY"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-WY_lbl" xml:lang="en-US">US-WY</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-WY" xlink:to="snj_US-WY_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-WY_lbl0" xml:lang="en-US">Wyoming</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-WY" xlink:to="snj_US-WY_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-NV" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-NV"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-NV_lbl" xml:lang="en-US">US-NV</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-NV" xlink:to="snj_US-NV_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-NV_lbl0" xml:lang="en-US">Nevada</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-NV" xlink:to="snj_US-NV_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-AL" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-AL"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-AL_lbl" xml:lang="en-US">US-AL</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-AL" xlink:to="snj_US-AL_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-AL_lbl0" xml:lang="en-US">Alabama</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-AL" xlink:to="snj_US-AL_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_US-ND" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_US-ND"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_US-ND_lbl" xml:lang="en-US">US-ND</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-ND" xlink:to="snj_US-ND_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_US-ND_lbl0" xml:lang="en-US">North Dakota</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_US-ND" xlink:to="snj_US-ND_lbl0"/>
          <loc xlink:type="locator" xlink:label="country_CN" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CN"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_CN_lbl" xml:lang="en-US">CHINA</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CN" xlink:to="country_CN_lbl"/>
          <loc xlink:type="locator" xlink:label="snj_CN-LN" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_CN-LN"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_CN-LN_lbl" xml:lang="en-US">CN-LN</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_CN-LN" xlink:to="snj_CN-LN_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_CN-LN_lbl0" xml:lang="en-US">Liaoning Sheng</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_CN-LN" xlink:to="snj_CN-LN_lbl0"/>
          <loc xlink:type="locator" xlink:label="country_SK" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_SK"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_SK_lbl" xml:lang="en-US">SLOVAKIA</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_SK" xlink:to="country_SK_lbl"/>
          <loc xlink:type="locator" xlink:label="snj_SK-BC" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_SK-BC"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_SK-BC_lbl" xml:lang="en-US">SK-BC</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_SK-BC" xlink:to="snj_SK-BC_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_SK-BC_lbl0" xml:lang="en-US">Banskobystrický kraj</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_SK-BC" xlink:to="snj_SK-BC_lbl0"/>
          <loc xlink:type="locator" xlink:label="country_TR" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_TR"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_TR_lbl" xml:lang="en-US">TÜRKIYE</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_TR" xlink:to="country_TR_lbl"/>
          <loc xlink:type="locator" xlink:label="snj_TR-52" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_TR-52"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_TR-52_lbl" xml:lang="en-US">TR-52</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-52" xlink:to="snj_TR-52_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_TR-52_lbl0" xml:lang="en-US">Ordu</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-52" xlink:to="snj_TR-52_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_TR-22" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_TR-22"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_TR-22_lbl" xml:lang="en-US">TR-22</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-22" xlink:to="snj_TR-22_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_TR-22_lbl0" xml:lang="en-US">Edirne</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-22" xlink:to="snj_TR-22_lbl0"/>
          <loc xlink:type="locator" xlink:label="snj_TR-64" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_TR-64"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_TR-64_lbl" xml:lang="en-US">TR-64</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-64" xlink:to="snj_TR-64_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_TR-64_lbl0" xml:lang="en-US">Uşak</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_TR-64" xlink:to="snj_TR-64_lbl0"/>
          <loc xlink:type="locator" xlink:label="country_AU" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_AU"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_AU_lbl" xml:lang="en-US">AUSTRALIA</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_AU" xlink:to="country_AU_lbl"/>
          <loc xlink:type="locator" xlink:label="snj_AU-QLD" xlink:href="https://xbrl.sec.gov/snj/2025/snj-2025.xsd#snj_AU-QLD"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="snj_AU-QLD_lbl" xml:lang="en-US">AU-QLD</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_AU-QLD" xlink:to="snj_AU-QLD_lbl"/>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="snj_AU-QLD_lbl0" xml:lang="en-US">Queensland</label>
          <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="snj_AU-QLD" xlink:to="snj_AU-QLD_lbl0"/>
        </link:labelLink>
      </link:linkbase>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/rxp/2025" schemaLocation="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:element name="USFederalGovernmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_USFederalGovernmentMember"/>
  <xs:element name="GovernmentOfChinaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GovernmentOfChinaMember"/>
  <xs:element name="JianpingTaxAuthorityMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_JianpingTaxAuthorityMember"/>
  <xs:element name="GovernmentOfTheSlovakRepublicMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GovernmentOfTheSlovakRepublicMember"/>
  <xs:element name="GovernmentOfTurkeyMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GovernmentOfTurkeyMember"/>
  <xs:element name="AustraliaFederalGovernmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_AustraliaFederalGovernmentMember"/>
  <xs:element name="QueenslandStateGovernmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_QueenslandStateGovernmentMember"/>
  <xs:element name="USFederalGovernmentByProjectMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_USFederalGovernmentByProjectMember"/>
  <xs:element name="AdamsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_AdamsMember"/>
  <xs:element name="CanaanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_CanaanMember"/>
  <xs:element name="LucerneValleyMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LucerneValleyMember"/>
  <xs:element name="PimaCountyMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_PimaCountyMember"/>
  <xs:element name="BarrettsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_BarrettsMember"/>
  <xs:element name="ColonyMontanaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ColonyMontanaMember"/>
  <xs:element name="ColonySouthDakotaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ColonySouthDakotaMember"/>
  <xs:element name="ColonyWyomingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ColonyWyomingMember"/>
  <xs:element name="LovellMontanaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LovellMontanaMember"/>
  <xs:element name="LovellWyomingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LovellWyomingMember"/>
  <xs:element name="NevadaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_NevadaMember"/>
  <xs:element name="SandyRidgeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_SandyRidgeMember"/>
  <xs:element name="GascoyneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GascoyneMember"/>
  <xs:element name="GovernmentOfChinaByProjectMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GovernmentOfChinaByProjectMember"/>
  <xs:element name="ChaoYangMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ChaoYangMember"/>
  <xs:element name="LutilaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LutilaMember"/>
  <xs:element name="GovernmentOfTurkeyByProjectMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GovernmentOfTurkeyByProjectMember"/>
  <xs:element name="UnyeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_UnyeMember"/>
  <xs:element name="EnezMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_EnezMember"/>
  <xs:element name="UsakMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_UsakMember"/>
  <xs:element name="GurulmundiMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_GurulmundiMember"/>
  <xs:element name="LimestoneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LimestoneMember"/>
  <xs:element name="TalcMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_TalcMember"/>
  <xs:element name="BentoniteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_BentoniteMember"/>
  <xs:element name="LeonarditeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_LeonarditeMember"/>
  <xs:element name="ConsumerAndSpecialtiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ConsumerAndSpecialtiesMember"/>
  <xs:element name="ConsumerAndSpecialtiesAndEngineeredSolutionsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="mtx_ConsumerAndSpecialtiesAndEngineeredSolutionsMember"/>
</xs:schema>
</XBRL>

```