Lat / long: | 38.67806, -105.48336 |
Primary: | Feldspar, Mica |
Secondary: | Bismuth |
Ore: | Bismutite, Microcline, Muscovite |
Gangue: | Biotite, Garnet |
Discovery year: | 1950 |
Operation type: | Surface |
Production size: | Small |
Development status: | Past Producer |
First production started: | 1950 |
Host type: | Gneiss |
Associated rock: | Quartz Diorite Of Boulder Creek Age |
Associated type: | Diorite |
Structure: | Southern Front Range, Thirtynine Mile Volcanic Field |
Tectonic: | Central Cordillera (Southern Rocky Mountains) |
MRDS | D009867 |
DEP | 10013519 |
Reference | {Deposit:: 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}{Deposit:: 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, 1:62,500.}{Deposit:: STERRETT, D.B., 1923, MICA DEPOSITS OF THE UNITED STATES: USGS BULLETIN 740, P. 51-55}{Reserve-Resource:: HANLEY, J.B. AND OTHERS, 1950} |
Reporter | Collins, Donna B. |