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#           National- to continental-scale governmental geophysical efforts for critical mineral mapping, USA      

      November 1, 2023    

The U.S. Geological Survey (USGS) has established robust collaborations with domestic state and international geological surveys to provide geophysical and other types of earth science data that act to underpin critical mineral research efforts across the United States, Canada, and Australia.  The Earth Mapping Resource Initiative (EMRI) is a national-scale collaborative effort with state geological surveys to improve geophysical and geological data to advance our understanding of the United States’ critical mineral endowment. The Critical Mineral Mapping Initiative (CMMI) is a tri-national collaboration with the federal geological surveys of Canada and Australia to conduct research that will aid in identifying new areas with potential for critical mineral deposits across all three countries. This study describes the important interplay between the EMRI and CMMI and how each act in a complementary fashion to advance critical mineral research. We present examples that illustrate how magnetic anomaly data are used to define critical mineral prospectivity for Mississippi Valley-type (MVT) Zn-Pb mineral systems and illustrate how CMMI magnetic derivative maps were considered into USGS’ EMRI efforts to acquire modern high-resolution airborne geophysical data over a large area within the US Midcontinent.

## Citation Information

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#### Anne E McCafferty

##### Research Geophysicist

Geology, Geophysics, and Geochemistry Science Center

anne@usgs.gov

303-236-1397

#### Chelsea M Amaral

##### Geophysicist

Geology, Geophysics, and Geochemistry Science Center

camaral@usgs.gov

#### Garth E Graham

##### Research Geologist

Geology, Geophysics, and Geochemistry Science Center

ggraham@usgs.gov

303-236-1558

## Related Content

#### Anne E McCafferty

##### Research Geophysicist

Geology, Geophysics, and Geochemistry Science Center

anne@usgs.gov

303-236-1397

#### Chelsea M Amaral

##### Geophysicist

Geology, Geophysics, and Geochemistry Science Center

camaral@usgs.gov

#### Garth E Graham

##### Research Geologist

Geology, Geophysics, and Geochemistry Science Center

ggraham@usgs.gov

303-236-1558

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#### Geology, Geophysics, and Geochemistry Science Center

West 6th Avenue and Kipling StreetDenver Federal Center Building 20Denver, CO80225United States

303-236-1800

303-236-3200

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