Mine detail: Johnny Feldspar Mine

Previously called ''

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Location

Lat / long:

38.66918, -104.88112

Resource(N)

Primary:	Feldspar
Tertiary:	Mica, Quartz
Ore:	Microcline, Muscovite, Quartz
Gangue:	Apatite, Biotite
Orebody form:	IRREGULAR

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Boulder Creek Granodiorite;Silver Plume Quartz Monzonite
Host type:	Diorite
Associated rock:	Boulder Creek Granodiorite;Pegmatite
Associated type:	Quartz Monzonite,Diorite
Structure:	Front Range Uplift, Pikes Peak Batholith, Mt Rosa Intrusive Center, Ute Pass Fault
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010375
DEP	10013849
Reference	{Deposit:: HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 32-34.}{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.}
Reporter	Schwochow, Stephen D.