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Gold-rich weathering rinds around pyrite and arsenopyrite near a Mo-Cu porphyry deposit in the Copper Basin, Nevada: implications for supergene enrichment and possible relationships with Carlin-style mineralisation
conference contribution
posted on 2023-05-23, 10:57 authored by Smyk, E, Hollings, P, David CookeDavid Cooke, Lee, RN, Lulu, JNThe Copper Basin is a well-endowed mineral camp with notable Mo, Cu, and Au mineralisation, located near Battle Mountain, Nevada, USA. Mo and Cu mineralisation is associated with the emplacement of Cretaceous granitic stocks and dykes, which produced local quartz stockwork veins. Tertiary granites produced skarn Au and Au ± Cu mineralisation. The study area lies within the Eureka mineral belt which hosts significant Carlin-style disseminated, sediment-hosted Au mineralisation. Several Tertiary granitoids in the northern part of the study area that were dated in this study had ages, ~41 – 37 Ma, correlating with the magmatism associated with the other intrusions along the Eureka Au trend. Petrographic studies of pyrite have found Au-rich weathering rinds around some pyrite grains sampled in, and near, the Buckingham porphyry. These supergene rims overprint the hypogene Au mineralisation.
Funding
AMIRA International Ltd
History
Publication title
Proceedings of the Society for Geology Applied to Mineral Deposits Conference 2015: Mineral Resources in a Sustainable WorldEditors
A-S Andre-Mayer, M Cathelineau, P Muchez, E Pirard, S SindernPagination
359-362ISBN
978-2-85555-065-7Department/School
School of Natural SciencesPublisher
Society for Geology Applied to Mineral DepositsPlace of publication
FranceEvent title
Society for Geology Applied to Mineral Deposits Conference 2015Event Venue
Nancy, FranceDate of Event (Start Date)
2015-08-24Date of Event (End Date)
2015-08-27Rights statement
Copyright unknownRepository Status
- Restricted