Exhibit
10.6


 


PRIVATE
PLACEMENT WARRANTS PURCHASE AGREEMENT


 


THIS
PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT, dated as of [●], 2021 (as it may from time to time be amended, this “Agreement”),
is entered into by and among Rigel Resource Acquisition Corp, a Cayman Islands exempted company (the “Company”), Rigel
Resource Acquisition Holding LLC, a Cayman Islands limited liability company (the “Sponsor”), Nathanael Abebe, Christine
Coignard, Kelvin Dushnisky and L. Peter O’Hagan, (collectively, with the Sponsor, the “Purchasers” and each,
a “Purchaser”).


 


WHEREAS:


 


The
Company intends to consummate an initial public offering of the Company’s units (the “Public Offering”), each
unit consisting of one Class A ordinary share of the Company, par value $0.0001 per share (each, an “Ordinary Share”),
and one-half of one redeemable warrant;


 


Each
whole warrant entitles the holder to purchase one Ordinary Share at an exercise price of $11.50 per Ordinary Share; and


 


Each
of the Purchasers has agreed to purchase a number of warrants as indicated opposite such Purchaser’s name on Annex I hereto
plus up to an additional number of warrants as indicated opposite such Purchaser’s name on Annex II hereto (collectively,
the “Private Placement Warrants”), each Private Placement Warrant entitling the holder to purchase one Ordinary Share
at an exercise price of $11.50 per Ordinary Share.


 


NOW
THEREFORE, in consideration of the mutual promises contained in this Agreement and other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, the parties to this Agreement hereby, intending legally to be bound, agree as follows:


 


AGREEMENT


 


Section
1. Authorization, Purchase and Sale; Terms of the Private Placement Warrants.


 


A.
Authorization of the Private Placement Warrants. The Company has duly authorized the issuance and sale of the Private Placement
Warrants to the Purchasers.


 


B.
Purchase and Sale of the Private Placement Warrants.


 


(i)
On the date of the consummation of the Public Offering or on such earlier time and date as may be mutually agreed by each of the Purchasers
and the Company (the “Initial Closing Date”), the Company shall issue and sell to each Purchaser, and each Purchaser
shall purchase from the Company, the number of Private Placement Warrants that is indicated opposite such Purchaser’s name on Annex
I hereto at a price of $1.00 per warrant for the aggregate purchase price that is indicated on Annex I hereto (the “Purchase
Price”), which shall be paid by such Purchaser by wire transfer of immediately available funds to the Company at least one
day prior to the Initial Closing Date in accordance with the Company’s wiring instructions. On the Initial Closing Date, following
the payment by each of the Purchasers of his or its Purchase Price by wire transfer of immediately available funds to the Company, the
Company, at its option, shall deliver a certificate evidencing the Private Placement Warrants purchased and received by such Purchaser
on such date duly registered in such Purchaser’s name to such Purchaser or effect such delivery in book-entry form.


 




     

     


    

 


(ii)
On the date of any closing of the over-allotment option in connection with the Public Offering or on such earlier time and date as may
be mutually agreed each of the Purchasers and the Company (each such date, an “Over-allotment Closing Date,” and each
Over-allotment Closing Date (if any and where applicable) and the Initial Closing Date, a “Closing Date”), the Company
shall issue and sell to each Purchaser, and each Purchaser shall purchase from the Company, up to an aggregate number of Private Placement
Warrants that is indicated opposite such Purchaser’s name on Annex II hereto, in the same proportion as the amount of the
option that is then so exercised, at a price of $1.00 per warrant for up to the aggregate purchase price that is indicated on Annex
II hereto (such purchase price to be as indicated if the over-allotment option in connection with the Public Offering is exercised
in full) (the “Over-allotment Purchase Price”), which shall be paid by wire transfer of immediately available funds
to the Company at least one day prior to such Over-allotment Closing Date in accordance with the Company’s wiring instructions.
On the Over-allotment Closing Date, following the payment by each of the Purchasers of his or its Over-allotment Purchase Price by wire
transfer of immediately available funds to the Company, the Company, at its option, shall deliver a certificate evidencing the Private
Placement Warrants purchased and received by such Purchaser on such date duly registered in the such Purchaser’s name to such Purchaser,
or effect such delivery in book-entry form.


 


C.
Terms of the Private Placement Warrants.


 


(i)
Each Private Placement Warrant shall have the terms set forth in a Warrant Agreement to be entered into by the Company and a warrant
agent, in connection with the Public Offering (a “Warrant Agreement”).


 


(ii)
At the time of, or prior to, the closing of the Public Offering, the Company and each of the Purchasers shall enter into a registration
rights agreement (the “Registration Rights Agreement”) pursuant to which the Company will grant certain registration
rights to the Purchasers relating to the Private Placement Warrants and the Ordinary Shares underlying the Private Placement Warrants.


 


Section
2. Representations and Warranties of the Company. As a material inducement to the Purchasers to enter into this Agreement and purchase
the Private Placement Warrants, the Company hereby represents and warrants to the Purchasers (which representations and warranties shall
survive the Closing Date) that:


 


A.
Organization and Corporate Power. The Company is an exempted company duly incorporated, validly existing and in good standing
under the laws of the Cayman Islands and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably
be expected to have a material adverse effect on the financial condition, operating results or assets of the Company. The Company possesses
all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement and the Warrant Agreement.


 




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B.
Authorization; No Breach.


 


(i)
The execution, delivery and performance of this Agreement and the Private Placement Warrants have been duly authorized by the Company
as of the Closing Date. This Agreement constitutes the valid and binding obligation of the Company, enforceable in accordance with its
terms. Upon issuance in accordance with, and payment pursuant to, the terms of the Warrant Agreement and this Agreement, the Private
Placement Warrants will constitute valid and binding obligations of the Company, enforceable in accordance with their terms as of the
Closing Date.


 


(ii)
The execution and delivery by the Company of this Agreement and the Private Placement Warrants, the issuance and sale of the Private
Placement Warrants, the issuance of the Ordinary Shares upon exercise of the Private Placement Warrants and the fulfillment, of and compliance
with, the respective terms hereof and thereof by the Company, do not and will not as of the Closing Date (a) conflict with or result
in a breach of the terms, conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien, security
interest, charge or encumbrance upon the Company’s share capital or assets under, (d) result in a violation of, or (e) require
any authorization, consent, approval, exemption or other action by or notice or declaration to, or filing with, any court or administrative
or governmental body or agency pursuant to, the amended and restated memorandum and articles of association of the Company (in effect
on the date hereof or as may be amended prior to completion of the contemplated Public Offering), or any material law, statute, rule
or regulation to which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject, except for
any filings required after the date hereof under federal or state securities laws.


 


C.
Title to Securities. Upon issuance in accordance with, and payment pursuant to, and registration in the register of members of
the Company, the terms hereof and the Warrant Agreement and the Amended and Restated Memorandum and Articles of Association of the Company,
the Ordinary Shares issuable upon exercise of the Private Placement Warrants will be duly and validly issued, fully paid and nonassessable.
Upon issuance in accordance with, and payment pursuant to, the terms hereof and the Warrant Agreement, the Purchasers will have good
title to the Private Placement Warrants and the Ordinary Shares issuable upon exercise of such Private Placement Warrants, free and clear
of all liens, claims and encumbrances of any kind, other than (i) transfer restrictions hereunder and under the other agreements
contemplated hereby, (ii) transfer restrictions under federal and state securities laws, and (iii) liens, claims or encumbrances
imposed due to the actions of the Purchasers.


 


D.
Governmental Consents. No permit, consent, approval or authorization of, or declaration to or filing with, any governmental authority
is required in connection with the execution, delivery and performance by the Company of this Agreement or the consummation by the Company
of any other transactions contemplated hereby.


 


Section
3. Representations and Warranties of the Purchaser. As a material inducement to the Company to enter into this Agreement and issue
and sell the Private Placement Warrants to the Purchasers, each of the Purchasers, as to itself, himself or herself only, hereby represents
and warrants, severally and not jointly, to the Company (which representations and warranties shall survive the Closing Date) that:


 


A.
Organization and Requisite Authority. Such Purchaser possesses all requisite power and authority necessary to carry out the transactions
contemplated by this Agreement.


 






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B.
Authorization; No Breach.


 


(i)
This Agreement constitutes a valid and binding obligation of such Purchaser, enforceable in accordance with its terms, subject to bankruptcy,
insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting creditors’
rights and to general equitable principles (whether considered in a proceeding in equity or law).


 


(ii)
The execution and delivery by such Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by such Purchaser
does not and shall not as of the Closing Date conflict with or result in a breach by such Purchaser of the terms, conditions or provisions
of any agreement, instrument, order, judgment or decree to which such Purchaser is subject.


 


C.
Investment Representations.


 


(i)
Such Purchaser is acquiring Private Placement Warrants as described above and, upon exercise of such Private Placement Warrants, the
Ordinary Shares issuable upon such exercise (collectively, the “Securities”), for such Purchaser’s own account,
for investment purposes only and not with a view towards, or for resale in connection with, any public sale or distribution thereof.


 


(ii)
Such Purchaser is an “accredited investor” as such term is defined in Rule 501(a)(3) of Regulation D under the Securities
Act of 1933, as amended (the “Securities Act”), and each Purchaser has not experienced a disqualifying event as enumerated
pursuant to Rule 506(d) of Regulation D under the Securities Act.


 


(iii)
Such Purchaser understands that the Securities are being offered and will be sold to it, him or her in reliance on specific exemptions
from the registration requirements of the United States federal and state securities laws and that the Company is relying upon the truth
and accuracy of, and such Purchaser’s compliance with, the representations and warranties of such Purchaser set forth herein in
order to determine the availability of such exemptions and the eligibility of such Purchaser to acquire such Securities.


 


(iv)
Such Purchaser decided to enter into this Agreement not as a result of any general solicitation or general advertising within the meaning
of Rule 502(c) of Regulation D under the Securities Act.


 


(v)
Such Purchaser has been furnished with all materials relating to the business, finances and operations of the Company and materials relating
to the offer and sale of the Securities which have been requested by such Purchaser. Such Purchaser has been afforded the opportunity
to ask questions of the executive officers and directors of the Company. Such Purchaser understands that its investment in the Securities
involves a high degree of risk and it has sought such accounting, legal and tax advice as it has considered necessary to make an informed
investment decision with respect to the acquisition of the Securities.


 




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(vi)
Such Purchaser understands that no United States federal or state agency or any other government or governmental agency has passed on
or made any recommendation or endorsement of the Securities or the fairness or suitability of the investment in the Securities by such
Purchaser nor have such authorities passed upon or endorsed the merits of the offering of the Securities.


 


(vii)
Such Purchaser understands that: (a) the Securities have not been and are not being registered under the Securities Act or any state
securities laws, and may not be offered for sale, sold, assigned or transferred unless (1) in a registered transaction or (2) sold in
reliance on an exemption therefrom; and (b) except as specifically set forth in the Registration Rights Agreement, neither the Company
nor any other person is under any obligation to register the Securities under the Securities Act or any state securities laws or to comply
with the terms and conditions of any exemption thereunder. In this regard, such Purchaser understands that the Securities and Exchange
Commission (the “SEC”) has taken the position that promoters or affiliates of a blank check company and their transferees,
both before and after a Business Combination, are deemed to be “underwriters” under the Securities Act when reselling the
securities of a blank check company. Based on that position, Rule 144 adopted pursuant to the Securities Act would not be available for
resale transactions of the Securities despite technical compliance with the requirements of such Rule, and the Securities can be resold
only through a registered offering or in reliance upon another exemption from the registration requirements of the Securities Act.


 


(viii)
Such Purchaser has such knowledge and experience in financial and business matters, knows of the high degree of risk associated with
investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks
of an investment in the Securities and is able to bear the economic risk of an investment in the Securities in the amount contemplated
hereunder for an indefinite period of time. Such Purchaser has adequate means of providing for its current financial needs and contingencies
and will have no current or anticipated future needs for liquidity which would be jeopardized by the investment in the Securities. Such
Purchaser can afford a complete loss of its investments in the Securities.


 


(ix)
Such Purchaser understands that the Private Placement Warrants shall bear the legend substantially in the form set forth in the Warrant
Agreement.


 


Section
4. Conditions of the Purchasers’ Obligations. The obligations of each of the Purchasers to purchase and pay for the Private
Placement Warrants are subject to the fulfillment, on or before the Closing Date, of each of the following conditions:


 


A.
Representations and Warranties. The representations and warranties of the Company contained in Section 2 shall be true and correct
at and as of the Closing Date as though then made.


 


B.
Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in this Agreement
that are required to be performed or complied with by it on or before the Closing Date.


 




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C.
No Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted,
entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this
Agreement or the Warrant Agreement.


 


D.
Warrant Agreement. The Company shall have entered into a Warrant Agreement with a warrant agent on terms satisfactory to each
of the Purchasers.


 


Section
5. Conditions of the Company’s Obligations. The obligations of the Company to each of the Purchasers under this Agreement are
subject to the fulfillment, on or before the Closing Date, of each of the following conditions:


 


A.
Representations and Warranties. The representations and warranties of such Purchaser contained in Section 3 shall be true and
correct at and as of the Closing Date as though then made.


 


B.
Performance. Such Purchaser shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by the Purchaser on or before the Closing Date.


 


C.
No Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted,
entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this
Agreement or the Warrant Agreement.


 


D.
Warrant Agreement. The Company shall have entered into a Warrant Agreement with a warrant agent on terms satisfactory to the Company.


 


Section
6. Termination. This Agreement may be terminated at any time after December 31, 2021 upon the election by either the Company or each
of the Purchasers upon written notice to the other party if the closing of the Public Offering does not occur prior to such date.


 


Section
7. Survival of Representations and Warranties. All of the representations and warranties contained herein shall survive the Closing
Date.


 


Section
8. Definitions. Terms used but not otherwise defined in this Agreement shall have the meaning assigned to such terms in the registration
statement on Form S-1 the Company has filed with the SEC, under the Securities Act.


 


Section
9. Miscellaneous.


 


A.
Successors and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement
by or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether
so expressed or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not assign this Agreement, other
than assignments by the Sponsor to affiliates (including Orion Resource Partners (USA) LP) thereof.


 




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B.
Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid
under applicable law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such provision
shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of this Agreement.


 


C.
Counterparts. This Agreement may be executed simultaneously in two or more counterparts, none of which need contain the signatures
of more than one party, but all such counterparts taken together shall constitute one and the same agreement.


 


D.
Descriptive Headings; Interpretation. The descriptive headings of this Agreement are inserted for convenience only and do not
constitute a substantive part of this Agreement. The use of the word “including” in this Agreement shall be by way
of example rather than by limitation.


 


E.
Governing Law. This Agreement shall be deemed to be a contract made under the laws of the State of New York and for all purposes
shall be construed in accordance with the internal laws of the State of New York.


 


F.
Amendments. This Agreement may not be amended, modified or waived as to any particular provision, except by a written instrument
executed by all parties hereto.


 


[Signature
page follows]


 




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IN
WITNESS WHEREOF, the parties hereto have executed this Agreement to be effective as of the date first set forth above.


 


	 	COMPANY:
	 	 	 
	 	RIGEL RESOURCE ACQUISITION CORP
	 	 	 
		By:	
	 	 	Name:
	 	 	Title:
	 	 	 
	 	PURCHASERS:
	 	 	 
	 	Rigel Resource Acquisition Holding LLC
	 	 	 
	 	By:	
	 		Name:
	 	 	Title:
	 	 	 
	 	 
	 	Nathanael Abebe
	 	 	 
	 	 
	 	Christine Coignard
	 	 	 
	 	 
	 	Kelvin Dushnisky
	 	 	 
	 	 
	 	L. Peter O’Hagan 




 


 


 


[Signature
page to Private Placement Warrants Purchase Agreement]


 




     

     


    

 


ANNEX
I


 


	Purchaser’s Name	 	Number of Private Placement Warrants to be Purchased*	 	 	Aggregate
Purchase Price*
	 
	Rigel Resource Acquisition Holding LLC	 	 	11,640,000	 	 	$	11,640,000	 
	Nathanael Abebe	 	 	100,000	 	 	$	100,000	 
	Christine Coignard	 	 	35,000	 	 	$	35,000	 
	Kelvin Dushnisky	 	 	25,000	 	 	$	25,000	 
	L. Peter O’Hagan	 	 	200,000	 	 	$	200,000	 



 


 






		*	Not
including any additional Private Placement Warrants that may be purchased pursuant to Section 1(B)(2). See Annex II.



 






     

     


    

 


ANNEX
II


 


	Purchaser’s Name	 	Maximum Number of Additional Private Placement Warrants to be Purchased Pursuant to Section 1(B)(2)	 	 	Maximum
Aggregate Purchase Price
	 
	Rigel Resource Acquisition Holding LLC	 	 	1,500,000	 	 	$	1,500,000	 
	Nathanael Abebe	 	 	0	 	 	$	0	 
	Christine Coignard	 	 	0	 	 	$	0	 
	Kelvin Dushnisky	 	 	0	 	 	$	0	 
	L. Peter O’Hagan	 	 	0	 	 	$	0