Commodities
PrimaryFeldspar
SecondaryMica
Commodity typeN
Deposit
Deposit sizeS
WorkingsSurface
Orebody formTABULAR
Materials
Ore mineralsMicrocline, Muscovite
GangueBiotite, Garnet
Geology
Host rockGneiss · Migmatitic Gneiss
Associated rockPegmatite · Pegmatite
StructureGunnison Uplift, Gunnison Uplift, Cimarron Fault
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
First production1937
Last production1957
Discovery year1936
Identification
Deposit ID10014560
MRDS IDD011385
Alternate namesPeifer Quarry, Unpatented Claim: Peifer
RegionNA
Data scoreB
Coordinates38.44556, -107.38731
References
HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH 1942-1944: USGS PROF. PAPER 227, P. 80-81.HANSEN, W.R., 1971, GEOLOGIC MAP OF THE BLACK CANYON OF THE GUNNISON RIVER AND VICINITY, WESTERN COLORADO: USGS MAP I-584.ARGALL, G.O., JR., 1949, INDUSTRIAL MINERALS OF COLORADO: COLORADO SCHOOL OF MINES QUART., V. 44, NO. 2, P. 165.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.COLORADO DIV. MINES ANNUAL OPERATOR REPTS. AND INF. REPTS.; ARGALL, 1949, P. 165