Mine detail: Giant Crystal Mine

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Location: Larimer County, Colorado, United States, North America
Lat / long: 40.41526, -105.37448
dep_id: 10087854
mrds_id: D010322
Commodity type: metallic and nonmetallic
Major mineral: Beryllium, Mica
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Beryl, Muscovite
work_type: Surface
Reporter: Schwochow, Stephen D.
hrock_unit: Metasedimentary Rocks-Mica Shcist;Pegmatite
hrock_type: Mica Schist
arock_unit: Pegmatite;Tonalite (Quartz Diorite)
arock_type: Tonalite,Pegmatite
Structure: Front Range Uplift, Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds
tectonic: Central Cordillera (Southern Rocky Mtns)
yr_lst_prd: 1960
References:
  • Deposit:: THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.
  • Deposit:: COLORADO DIV. MINES INF. REPT.
  • Deposit:: BRADDOCK, W.A., AND OTHERS, 1970, GEOLOGIC MAP OF THE DRAKE QUADRANGLE, LARIMER COUNTY, COLORADO: USGS MAP GQ-829.
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