Mine detail: Devils Head Prospect

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Location:	Douglas County, Colorado, United States, North America
Lat / long:	39.25694, -105.11585
dep_id:	10013800
mrds_id:	D010296
Commodity type:	metallic and nonmetallic
Major mineral:	Gemstone
Trace mineral:	Tin, Feldspar
Operation type:	Unknown
Production size:	Small ammount of material produced
Development status:	Past Producer
gangue:	Biotite, Cassiterite, Cleavelandite
work_type:	Surface
alteration:	Fe Oxides
Reporter:	Schwochow, Stephen D.
hrock_unit:	Pikes Peak Granite;Pegmatite
hrock_type:	Granite
arock_unit:	Pikes Peak Granite;Pegmatite
arock_type:	Pegmatite,Granite
Structure:	Front Range Uplift, Pikes Peak Batholith, Rampart Range Uplift, Perry Park-Jarre Canyon Fault, Rampart Range Fault, Manitou Park Half Graben
tectonic:	Central Cordillera (Southern Rocky Mtns)
References:	Deposit:: MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 24-25. Deposit:: BRYANT, BRUCE, AND OTHERS, 1981, GEOLOGIC MAP OF THE DENVER 1X2 QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163. Deposit:: HEINRICH, E.W., 1957, PEGMATITE PROVINCES OF COLORADO: COLORADO SCHOOL MINES QUART., V.52, NO. 4, P. 1-22. Deposit:: TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP I-857-F. Deposit:: PEACOCK, M.A., 1935, TOPAZ FROM DEVI* HEAD, COLORADO: AM. MINERALOGIST, V. 20, P. 354-363. Deposit:: HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 31.