Mine detail: Bonanza Mine

Previously called ''

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Location

Lat / long:

46.37934, -112.57089

Resource(M)

Primary:	Gold, Silver, Lead
Secondary:	Zinc, Copper
Tertiary:	Arsenic, Antimony
Ore:	Chalcopyrite, Galena, Gold, Sphalerite, Tetrahedrite
Gangue:	Ankerite, Pyrite, Quartz
Discovery year:	1895

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1960

Geology

Host type:	Basalt
Associated rock:	Elkhorn Mountain Volcanics
Associated type:	Basalt
Structure:	Boulder Batholith
Alteration processes:	Includes Silicification And Pyritization And Minor Argillization And Sericitization. Porphyritic Basalt Has Been Kaolinized And Bleached.

References

MRDS	DC10916
DEP	10019598
Reference	{Deposit:: MBMG BULL 98, P. 19, 57.}{Deposit:: MBMG BULL 25, P. 41.}{Deposit:: MBMG BULL 34, P. 18, 19.}{Deposit:: USGS BULL 842, P. 279-80.}{Production:: MBMG BULL 98, P 57.}
Reporter	Unknown, Wise, Kristine K. (Elliott, James E.)