Description
Newmont Exploration Limited
Commodities
PrimaryGold
SecondarySilver
Deposit
Deposit typereplacement
Model173: Sediment-hosted Au
Deposit sizeN
Orebody formtabular
Ore controlThe Deep Star deposit occurs within metamorphosed carbonate rocks, sandwiched between two large intrusive bodies.
Geology
Host rockCarbonate · Popovich Formation
Associated rockDiorite · Goldstrike Stock
StructureDeep Star lies along the Tuscarora Spur, a north-trending antiform., Deep Star lies 1000 ft. south of the Goldstrike intrusive and along the southern extension of the NW-trending Post fault system. The primary structural orientation associated with ore formation at Deep Star is N20W.
AlterationAlteration comments: propylitization, argillization, silicification. Argillization is the dominant alteration type and occurs as a halo to the mineralized zone, and with quartz through the gold-rich zones. Silica is present in a variety of forms, including replacements, veins, stockworks and breccias, reflecting multiple periods of silicification. Silicification is not a simple quartz flooding, but is found as a quartz-kaolinite-sericite alteration.
Economic & production
Development statusProducer
Discovery year1989
Identification
Deposit ID10310436
MRDS IDRE00283
RegionNA
Data scoreB
Coordinates40.95907, -116.37593
References
Bureau of Land Management, 1991, Draft Environmental Impact Statement, Betze Project.Harvey, B. A. and Clode, C. H., 1992, Geology and Gold Mineralization at the Deep Star Deposit, Eureka County, Nevada, abstract in Geological Society of Nevada Newsletter, November.Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.Newmont website, 2004.Chris H. Clode, Steven R. Grusing, Ivan M. Johnston, and Dean G. Heitt, 2002 ,Geology of the Deep Star Gold Deposit, in NBMG Bull 111.