Commodities
PrimaryFeldspar, Mica
TertiaryREE
Commodity typeB
Deposit
Deposit sizeS
Orebody formLENTICULAR
Materials
Ore mineralsAlbite, Cleavelandite, Microcline
GangueAllanite, Garnet, Magnetite, Muscovite, Quartz
Geology
Host rockGneiss · Idaho Springs Formation---Interlayered Hornblende Gneiss, Calc-Silicate Gneiss, And Amphibolite;Pegmatite
Associated rockPegmatite · Pegmatite
StructureFront Range Uplift, Denver Basin, Floyd Hill Fault Zone, Unnamed Overturned Anticline
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1935
Last production1949
Identification
Deposit ID10013732
MRDS IDD010190
Alternate namesCoors Quarry, Coors Feldspar Pegmatite
RegionNA
Data scoreB
Coordinates39.70027, -105.37308
References
SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 27.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.USBM MIN. EXAM. FILE, REPT. OF 6/29/59 (FROM ORIGINAL CRIB RECORD)ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)