Mine detail: Combination Prospect

Previously called 'Allard Beryllium Prospect'

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Location

Lat / long: 38.63306, -105.98281

Resource(B)

Primary: Mica, Feldspar
Secondary: Beryllium
Ore: Beryl, Feldspar, Muscovite
Gangue: Biotite, Garnet, Quartz
Discovery year: 1942

Production

Operation type: Unknown
Production size: None
Development status: Occurrence

Geology

Host rock:Migmatitic Gneiss
Host type:Diorite,Gneiss
Associated rock:Granodiorite
Associated type:Diorite
Structure:Southern Mosquito Range, Thirtynine Mile Volcanic Field, Arkansas Valley Graben, E-W-Trending Faults
Tectonic:Central Cordillera (Southern Rocky Mountains)

References

MRDSD010252
DEP10087831
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. 23-27}{Deposit:: SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOGIC MAP OF THE PUEBLO 10 X 20 QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP I-1022, 1:250,000}{Deposit:: ARGALL, G.O., JR., 1949, INDUSTRIAL MINERALS OF COLORADO: COLORADO SCHOOL OF MINES QUARTERLY, V. 44. NO. 2, P. 52}{Deposit:: BOARDMAN, S.J., 1976, GEOLOGY OF THE PRECAMBRIAN METAMORPHIC ROCKS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 13, NO. 3, P. 89-100.}{Deposit:: BOARDMAN, S.J., 1971, PRECAMBRIAN GEOLOGY AND MINERAL DEPOSITS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: PH.D. THESIS, UNIVERSITY OF MICHIGAN, 131 P.}
ReporterCollins, Donna B.