Mine detail: Helena-Jefferson Mine

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Location: Jefferson County, Montana, United States, North America
Lat / long: 46.35684, -112.04671
dep_id: 10019594
mrds_id: DC10906
Commodity type: metallic
Major mineral: Silver, Lead, Zinc
Minor mineral: Copper
Trace mineral: Molybdenum
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Alabandite, Chalcopyrite, Galena, Molybdenite, Rhodonite, Sphalerite
gangue: Calcite, Pyrite, Quartz, Rhodochrosite
Reporter: Unknown, Wise, Kristine K. (Elliott, James E.)
hrock_type: Quartz Monzonite,Granite
arock_unit: Boulder Batholith
arock_type: Quartz Monzonite,Granite
Structure: Boulder Batholith
Year first produced: 1928
yr_lst_prd: 1928
References:
  • Deposit:: USGS PP 428, PL. 1
  • Deposit:: MBMG BULL-16, P. 51, 109.
  • Deposit:: USGS BULL 842, P. 238-40.
  • Production:: MBMG BULL 16, P. 109.
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