Commodities
PrimaryFeldspar
TertiaryTantalum, Copper
Commodity typeB
Deposit
Deposit sizeS
Orebody formPOD
Materials
Ore mineralsCleavelandite, Malachite, Microcline, Microlite, Tantalite
GangueBiotite, Garnet, Quartz
Geology
Host rockGneiss · Idaho Springs Formation---Hornblende Gneiss And Amphibolite
Associated rockPegmatite · Pegmatite
StructureFront Range Uplift, Denver Basin, Floyd Hill Fault Zone
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1941
Discovery year1939
Identification
Deposit ID10013738
MRDS IDD010197
RegionNA
Data scoreB
Coordinates39.7086, -105.3803
References
BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, P. 115-142SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 29.