Commodities
PrimaryBeryllium
TertiaryFeldspar
Commodity typeB
Deposit
Deposit sizeS
Orebody formTABULAR
Materials
Ore mineralsBeryl, Microcline
GangueBiotite, Plagioclase
Geology
Host rockGneiss · Idaho Springs Formation---Hornblende Gneiss, Calc-Silicate Gneiss, And Amphibolite
Associated rockPegmatite · Pegmatite
StructureFront Range Uplift, Denver Basin, Kennedy Gulch Fault Zone
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1942
Identification
Deposit ID10013764
MRDS IDD010228
RegionNA
Data scoreB
Coordinates39.66749, -105.45003
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-1337