Mine detail: Gem Mine

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Location: Granite County, Montana, United States, North America
Lat / long: 46.32906, -113.26759
dep_id: 10014287
mrds_id: D010994
Commodity type: metallic and nonmetallic
Major mineral: Silver, Manganese
Minor mineral: Gold, Copper, Lead
Trace mineral: Phosphorus-Phosphates, Arsenic, Antimony
Operation type: Unknown
Deposit type: Replacement Vein
Production size: Small ammount of material produced
Development status: Past Producer
ore: Galena, Psilomelane, Pyrolusite, Sphalerite, Tennantite
gangue: Calcite, Quartz, Rhodochrosite
orebody_fm: TABULAR
alteration: Oxidized
ore_ctrl: Near Granite Contact
Reporter: Wise, Kristine K. (Elliott, James E.)
hrock_unit: Red Lion Formation;Hasmark Formation
hrock_type: Quartzite,Marble,Limestone
arock_unit: Philipsburg Batholith
arock_type: Diorite
Structure: Philipsburg Batholith
References:
  • Deposit:: USGS PP 78, P. 210.
  • Deposit:: USGS BULL 1237.
  • Deposit:: USGS BULL 922-G, P. 197
  • Deposit:: USGS BULL 725, P. 163.
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