Mine detail: Florence Mine

Previously called ''

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Location

Lat / long:

46.94102, -110.74278

Resource(M)

Primary:	Silver, Lead
Secondary:	Gold, Copper, Zinc
Ore:	Chalcopyrite, Galena, Polybasite, Proustite, Pyrite, Sphalerite, Tetrahedrite
Gangue:	Ankerite, Barite, Quartz
Orebody form:	LINEAR
Discovery year:	1886

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1893

Geology

Host rock:	Grey Feldspar Gneiss;Black Amphibolite
Host type:	Gneiss
Structure:	Pre - Beltian Gneisses Etc Arched Upward, Fault On South End Of Primary Ore Shoot
Alteration processes:	Some Secondary Enrichment Near Surface

References

MRDS	W026533
DEP	10078277
Reference	{Deposit:: ROBERTSON, A. F., 1951 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA: U. S. BUREAU OF MINES INFOR CIRCULAR NO 7589 P 24 - 26}{Deposit:: SCHAFER, P. A., 1935 , GEOLOGY AND ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA: MONT BUREAU OF MINES AND GEOL. MEMOIR NO. 13 P 34 - 36}{Deposit:: WEED, W. H., 1900 , GEOLOGY OF THE LITTLE BELT MOUNTAINS, MONTANA; U. S. GEOLOGICAL SURVEY 20TH ANN. REPORT PT 3. P 425 , 426}{Production:: ROBERTSON, A. F. 1951 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE CO., MONT., P 25}
Reporter	Mc Kenzie, Craig L.; R. B. Berg