Commodities
PrimaryBeryllium
TertiaryFeldspar, Quartz, Mica, Barium-Barite, Molybdenum, Bismuth
Commodity typeB
Deposit
Deposit sizeN
Orebody formTABULAR
Materials
Ore mineralsBismuthinite, Bismutite, Chrysoberyl, Microcline, Muscovite, Quartz
Geology
Host rockMica Schist · Idaho Springs-Mica Schist Unit
Associated rockPegmatite · Granitic Pegmatite
StructureFront Range Uplift, Denver Basin, Junction Ranch Fault System, Hurricane Hill Fault System
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusOccurrence
Identification
Deposit ID10013730
MRDS IDD010188
RegionNA
Data scoreB
Coordinates39.7911, -105.31447
References
SHERIDAN, D.M., AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520 (INCL. GEOLOGIC MAP OF RALSTON BUTTES QUAD)HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 85RANDALL, J.S., 1886, MINERALS OF COLORADO: GEORGETOWN, CO, 49 P.ECKEL, E.B., 1961, MINERALS OF COLORADO-A 100-YEAR RECORD: USGS BULL. 1114, P. 77