Mine detail: Monolith Group Mine

Previously called ''

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Location

Lat / long:

45.38488, -114.28787

Resource(M)

Primary:	Gold
Tertiary:	Lead, Silver, Zinc
Ore:	Galena, Sphalerite
Gangue:	Biotite, Feldspar, Muscovite, Pyrite, Quartz
Orebody form:	TABULAR
Discovery year:	1882

Production

Operation type:	Underground
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Belt Supergroup
Host type:	Slate,Quartzite,Schist,Gneiss
Associated rock:	Dikes-Granite Porphyry, Quartz Diorite Porphyry, Basalt Lamprophyre;Gneissic Granite
Associated type:	Diorite,Basalt,Granite

References

MRDS	W014859
MAS	160590430
DEP	10071457
Reference	{Deposit:: Umpleby, J. B., 1913, Geology And Ore Deposits Of Lemhi County, Idaho: USGS Bulletin 528, P. 143.}{Deposit:: Sturm, F. H., 1954, General Geology Of Some Replacement Monazite Deposits In Lemhi County, Idaho: Moscow, Idaho, Univ. Of Idaho, M.S. Thesis, 64 P.}{Deposit:: Gray, F. A., 1927, Ore Deposits Of The Mineral Hill District, Lemhi County, Idaho: Minneapolis, Minnesota, Univ. Of Minnesota, Phd Thesis.}{Production:: Umpleby, J. B., 1913, USGS Bulletin 528, P. 143.}
Reporter	Duncan, Daniel G. (Miller, Pat), Western Field Operations Center (WFOC)