Commodities
PrimaryBeryllium
TertiaryFeldspar
Commodity typeB
Deposit
Deposit sizeS
Orebody formTABULAR
Materials
Ore mineralsBeryl, Microcline
GangueAlbite, Biotite, Garnet, Magnetite
Geology
Host rockGneiss · Idaho Springs Formation---Feldspar-Rich Gneiss
Associated rockPegmatite · Pegmatite
StructureFront Range Uplift, Denver Basin, Floyd Hill Fault Zone
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1943
Last production1943
Discovery year1943
Identification
Deposit ID10101842
MRDS IDD010229
RegionNA
Data scoreB
Coordinates39.70971, -105.47337
References
HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 30-31SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, P. 115-142