Mine detail: Coors Pegmatite

Previously called 'Coors QuarryCoors Feldspar Pegmatite'

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Location: Jefferson County, Colorado, United States, North America
Lat / long: 39.70027, -105.37308
dep_id: 10013732
mrds_id: D010190
Commodity type: metallic and nonmetallic
Major mineral: Feldspar, Mica
Trace mineral: REE
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Albite, Cleavelandite, Microcline
gangue: Allanite, Garnet, Magnetite, Muscovite, Quartz
orebody_fm: LENTICULAR
Reporter: Schwochow, Stephen D.
hrock_unit: Idaho Springs Formation---Interlayered Hornblende Gneiss, Calc-Silicate Gneiss, And Amphibolite;Pegmatite
hrock_type: Gneiss
arock_unit: Pegmatite
arock_type: Pegmatite
Structure: Front Range Uplift, Denver Basin, Floyd Hill Fault Zone, Unnamed Overturned Anticline
tectonic: Central Cordillera (Southern Rocky Mtns)
Year first produced: 1935
yr_lst_prd: 1949
References:
  • Deposit:: SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.
  • Deposit:: MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 27.
  • Deposit:: BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN GRANITIC PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, NO. 2, P. 115-142.
  • Deposit:: USBM MIN. EXAM. FILE, REPT. OF 6/29/59 (FROM ORIGINAL CRIB RECORD)
  • Production:: ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)
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