Colorado · Jefferson County
Occurrence

Strang Pegmatite

Jefferson County, Colorado, United States
QuartzFeldsparMicaREE
⌖ Show on mapUSGS source ↗
Commodities
PrimaryQuartz, Feldspar, Mica
SecondaryREE
Commodity typeB
Deposit
Deposit sizeN
Materials
Ore mineralsMicrocline, Muscovite, Quartz
Geology
Host rockGneiss · Idaho Springs Formation---Microcline-Quartz-Plagioclase-Biotite Gneiss Unit
Associated rockPegmatite · Granitic Pegmatite
StructureFront Range Uplift, Denver Basin, Hurricane Hill Fault System, Unnamed Syncline, Idaho Springs-Ralston Shear Zone
Tectonic settingCentral Cordillera (Southern Ricky Mtns)
Economic & production
Development statusOccurrence
Identification
Deposit ID10013727
MRDS IDD010184
RegionNA
Data scoreC
Coordinates39.84277, -105.37281
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)USBM MIN. EXAM. FILE, REPT. OF 2/2/59 (FROM ORIGINAL CRIB RECORD)