Commodities
PrimaryBeryllium
TertiaryMica, Feldspar
Commodity typeB
Deposit
Deposit sizeN
Orebody formTABULAR
Materials
Ore mineralsChrysoberyl, Muscovite
GangueTourmaline
Geology
Host rockMica Schist · Idaho Springs Formation-Mica Schist Unit
Associated rockPegmatite · Granitic Pegmatite
StructureFront Range Uplift, Denver Basin, Hurricane Hill Fault System, Unnamed Syncline
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusOccurrence
Identification
Deposit ID10013734
MRDS IDD010192
Alternate namesDrew Hill Pegmatites Nos. 1 and 2
RegionNA
Data scoreB
Coordinates39.82777, -105.31475
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. 85USGS COMMODITY FILE, GP III, REEL 31, DOCKET 9933; GP III, REEL 40, DOCKET 12738; GP III, REEL 12, DOCKET 2701, 1946 (FROM ORIGINAL CRIB RECORD)