Mine detail: Blue Grass Mine

Previously called ''

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Location

Lat / long:

45.15962, -112.97478

Resource(M)

Primary:	Gold, Silver
Tertiary:	Tellurium
Ore:	Tetradymite
Gangue:	Calcite, Epidote, Garnet, Pyrite, Quartz, Specularite
Discovery year:	1863

Production

Operation type:	Unknown
Deposit type:	Contact Metasomatic
Production size:	Small
Development status:	Past Producer
Production years:	PRE-1930
First production started:	1863

Geology

Host rock:	Madison
Host type:	Limestone
Associated rock:	Bannack Stock
Associated type:	Diorite
Structure:	Overthrust Fault Zone Is Exposed In Mine. Dike Trends N50e; 60n.
Alteration processes:	Garnetization, Oxidation

References

MRDS	DC11403
DEP	10019759
Reference	{Deposit:: MBMG BULL 6, P. 42-43.}{Deposit:: MBMG BULL 85, P. 81-83.}{Deposit:: 1931 COMPILE M.B.M.G. BULL. 6}{Deposit:: 1972 COMPILE M.B.M.G. BULL. 85}
Reporter	Unknown, Loen, Jeffrey S. (Pearson, Robert C.)