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Characterization of carbon in sediment-hosted disseminated gold deposits, north central Nevada

By:  and 
Edited by: Hausen Donald M.Halbe Douglas N.Petersen Erich U.Tafuri William J.

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Abstract

The gray, dark gray and black colors of the sediments and the presence of pyrite in the Carlin, Jerritt Canyon, Horse Canyon, Betze, and Gold Acres sediment-hosted disseminated gold (SHDG) deposits indicate that these rocks are not oxidized with respect to carbon and iron sulfide. The organic matter in the host rocks of SHDG deposits in north-central Nevada is cryptocrystalline graphite with dimensions of 30 to 70 A (0.003 to 0.007 ??) that was formed at temperatures of 250 to 300??C. These results indicate that north-central Nevada was subjected to pumpellyite-actinolite to lowermost greenschist facies conditions prior to mineralization. The hydrothermal fluids that produced the gold deposits had little, if any, effect on the thermal maturity and crystallinity of the cryptocrystalline graphite produced by the earlier thermal event.

Suggested Citation

Leventhal, J., Hofstra, A., 1990, Characterization of carbon in sediment-hosted disseminated gold deposits, north central Nevada, Proceedings of the Gold '90 Symposium - Gold '90, Salt Lake City, UT, USA, 26 February 1990 through 1 March 1990, p. 365-368.

Publication type Conference Paper
Publication Subtype Conference Paper
Title Characterization of carbon in sediment-hosted disseminated gold deposits, north central Nevada
ISBN 087335091X
Year Published 1990
Language English
Publisher Publ by Soc of Mining Engineers of AIME
Publisher location Littleton, CO, United States
First page 365
Last page 368
Conference Title Proceedings of the Gold '90 Symposium - Gold '90
Conference Location Salt Lake City, UT, USA
Conference Date 26 February 1990 through 1 March 1990
Additional publication details