Description
United States Mica Company?
Commodities
PrimaryFeldspar, Mica
SecondaryBeryllium
TertiaryQuartz
Commodity typeB
Deposit
Model32: Pegmatites
Deposit sizeS
WorkingsUnknown
Orebody formSHALLOW, ROUGHLY STAR-SHAPED, PEGMATITE. MODE OF ORIGIN: MAGMATIC DIFFERENTIATION
Ore control3 Major, 2 Minor Synclinal Rolls Converging Near Center Of Pegmatite
Materials
Ore mineralsMicrocline, Muscovite
GangueBiotite
Other materialsBeryl
Geology
Host rockGneiss
Associated rockDiorite · Quartz Diorite Of Boulder Creek Age
StructureSouthern Front Range, Thirtynine Mile Volcanic Field
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
Economic & production
Development statusPast Producer
Production yearsNO PRODUCTION RECORDED AFTER 1947
First production1950
Discovery year1950
Identification
Deposit ID10097862
MRDS IDD009865
Alternate namesClimax Minca Lode, Colorado Feldspar Company Mine, Climax MicaClimax, Mine No. 8 U.S. Mica Co., Climax Mica Mine
RegionNA
Data scoreB
Coordinates38.69391, -105.482
References
HANLEY, J.B., HEINRICH, E.W., PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROFESSIONAL PAPER 227, P. 42-55.WOBUS, R.A., EPIS, R. C. AND SCOTT, G. R., 1979, GEOLOGIC MAP OF THE COVER MOUNTAIN QUADRANGLE, FREMONT, PARK, AND TELLER COUNTIES, COLORADO: USGS MAP I-1179, 1:62,500MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S., SHANNON, S.S., J.R., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM INFORMATION CIRCULAR 8298, 34 P.STERRETT, D.B., 1923, MICA DEPOSITS OF THE UNITED STATES: USGS BULLETIN 740, P. 51-55.USBM MIN. EXAM. FILEMINOBRAS, 1974, Colorado and Utah Industrial Minerals.CONSV. DIV. COMP. DATE, 9,64HANLEY, J.B. AND OTHERS, 1950