Mine detail: Whopper Mine and Prospect

Previously called ''

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Location

Lat / long:

38.69444, -105.47975

Resource(N)

Primary:	Feldspar, Mica
Ore:	Microcline, Muscovite
Gangue:	Magnetite, Sillimanite, Quartz
Orebody form:	LENSOID
Discovery year:	1950

Production

Operation type:	Surface-Underground
Production size:	Small
Development status:	Past Producer
First production started:	1950

Geology

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)

References

MRDS	D009864
DEP	10013517
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.}{Deposit:: BEVER, J.E., 1953, NOTES ON SOME MINERAL OCCURRENCES IN THE GUFFEY REGION, COLORADO: AMERICAN MINERALOGIST, V. 38, P. 138-141.}
Reporter	Collins, Donna B.