Mine detail: Deep Star Deposit

Lat / long:

40.95907, -116.37593

Host rock:	Popovich Formation
Host type:	Carbonate
Associated rock:	Goldstrike Stock
Associated type:	Diorite
Structure:	Deep 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.
Alteration processes:	Alteration 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.

MRDS	RE00283
DEP	10310436
Reference	{Deposit:: Bureau of Land Management, 1991, Draft Environmental Impact Statement, Betze Project.}{Deposit:: 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.}{Deposit:: 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.}{Deposit:: Newmont website, 2004.}{Deposit:: 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.}
Reporter	Phinisey, J. D. (Marcus, S.), Buckingham, David A., LaPointe, D.D. , Schruben, Paul G.