Mine detail: Homestake Mine

Previously called 'Last Chance'

<< Back to the map

Location

Lat / long:

44.24908, -114.85953

Resource(B)

Primary:	Silver, Gold
Tertiary:	Fluorine-Fluorite, Lead
Gangue:	Pyrite, Quartz
Orebody form:	LINEAR
Discovery year:	1932

Production

Operation type:	Underground
Production size:	Small
Development status:	Past Producer
First production started:	1934

Geology

Host type:	Quartz Monzonite
Associated rock:	Idaho Batholith-Quartz Monzonite;Rhyolite Dikes
Associated type:	Quartz Monzonite,Rhyolite
Structure:	Idaho Batholith; Salmon R Fault, Two Or Three Sets Of Faults; Slickensides. Brecciation, Gouge
Alteration processes:	Deep Weathering

References

MRDS	W014170
MAS	160370399
DEP	10070998
Reference	{Deposit:: Choate, Raoul, 1962, Geology And Ore Deposits Of The Stanley Area: Idaho Bureau Of Mines And Geology Pamphlet 126, 120 P.}{Deposit:: Tschanz, C. M., And Others, 1974, Mineral Resources Of The Eastern Part Of The Sawtooth National Recreation Area, Custer And Blaine Counties, Idaho: USGS Open-File Rept., 648 P.}{Deposit:: 1962 Geolmap Idaho Bureau Of Mines And Geology Pamphlet 126}{Deposit:: Vannoy & Others, 1986, USGS Bulletin 1545e, P. 440, Pl. 3, No. 40}{Deposit:: Shawe & Others 1976 USGS Prof Paper 933 P 36-37}{Production:: Tschanz, C. M., And Others, 1974, USGS D. F. Rept., P. 596}
Reporter	Yett, Jay R.; Miller, Pat, Federspiel