List of Earth MRI focus areas with mineral system = Meteoric convection

Meteoric convection

Low-sulfidation Au-Ag deposits associated with mantle plume volcanic rocks form under relatively low oxygen and sulfur fugacities, and have low base metal contents and high Au/Ag ratios and selenium contents. Low-sulfidation deposits also occur along extensional fault zones that are not associated with proximal, coeval magmatic activity.

Color on map:

Deposit types

Name	Commodities	Critical minerals
Low sulfidation epithermal gold-silver	Au, Ag, Hg, Sb	Sb, Te
Low sulfidation epithermal antimony	Sb	Sb
Low sulfidation epithermal mercury	Hg

References

Simmons, S.F., White, N.C, and John, D.A., 2005, Geological characteristics of epithermal precious and base metal deposits, in Hedenquist, J.W., Thompson, J.F.H., Goldfarb, R.J., and Richards, J.P., eds., Economic Geology-One Hundredth Anniversary Volume, 1905-2005: Littleton, Colo., Society of Economic Geologists, Inc., p. 485-522, accessed March 30, 2021, at https://doi.org/10.5382/AV100.16.
John, D.A., and Henry, C.H., 2020, Magmatic-tectonic settings of Cenozoic epithermal gold-silver deposits of the Great Basin, Western United States, in Geological Society of Nevada Symposium, 2020, Sparks, Nev., May 18-21, 2020, Proceedings: Reno, Nev., Geological Society of Nevada, p. 765-796.

Source: Hofstra, A.H., and Kreiner, D.C., 2020, Systems-Deposits-Commodities-Critical Minerals Table for the Earth Mapping Resources Initiative: U.S. Geological Survey Open-File Report 2020-1042, 24 p., https://doi.org/10.3133/ofr20201042.

Focus area	Region	States	Mineral Systems	Deposit types	Commodities
Yellow Pine/Stibnite Mining District	Northwest	Idaho	Meteoric convection	Low sulfidation epithermal antimony; Low sulfidation epithermal gold-silver	gold; mercury; silver
Coast Ranges	Southwest	California	Meteoric convection	Low sulfidation epithermal gold-silver	gold; lead; mercury; silver
McDermitt Caldera	Southwest	Nevada; Oregon	Meteoric convection	Low sulfidation epithermal mercury	mercury