Commodities
PrimaryGold, Silver
SecondaryCopper, Lead
Commodity typeM
Deposit
Deposit typehydrothermal stockwork?hot spring Au-Ag
Model104: Hot-spring Au-Ag150: Epithermal vein, Comstock
Deposit sizeS
WorkingsSurface/Underground
Orebody formtabular
Ore controlMineralization occurs adjacent to an igneous contact to which it may be genetically related.
Materials
Ore mineralsElectrum, Silver, Copper
GangueQuartz, Adularia, Chloritoid
Geology
Host rockGabbro · Stillwater Gabbro
Associated rockRhyolite
StructureMineralization occurs adjacent to an igneous contact., A roughly N-S-trending high-angle range-front fault cuts the host rocks near the mine area.
AlterationIntense multiple phase silicification has occurred with minor adularization of the host rocks.
Economic & production
Development statusProducer
Production years1935-1942; 1975-1980
First production1935
Last production1980
Discovery year1934
Identification
Deposit ID10310498
MRDS IDM233112
RegionNA
Data scoreA
Coordinates39.8658, -118.01745
References
Willden, R., and Speed, R. C., 1974, Geology and Mineral Deposits of Churchill County, Nevada, NBMG Bull. 83, p 67.Vvanderburg, W.O., 1940, Reconnaissance of Mining Districts in Churchill County, Nev., USBM I.C. 7093, p. 48.State Inspector of Mines, 1981, Directory of Mining Operations Active in Nevada in Calendar Year 1980.Horizon Gold Corp., Annual Report Form 10-K for Fiscal Year Ended March 31, 1991.Horizon Gold Corp., Annual Report Form 10-K for Fiscal Year Ended March 31, 1992.Bureau of Land Management, 1991, Environmental Assessment of Horizon Gold Corporation's Dixie Comstock Mine and Heap Leach Project, EA# NV-030-90-70.NBMG, 1994, MI-1993NBMG, 1997, MI-1996Randol, 1996, The Mines Handbook.Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.