Mine detail: R. H. Magnuson Mine

Previously called 'Magnusson Crosscut'

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Location

Lat / long: 38.4714, -105.30113

Resource(B)

Primary: Feldspar, Quartz
Secondary: Beryllium
Ore: Beryl, Microcline, Quartz
Gangue: Biotite, Garnet, Tourmaline
Orebody form: TABULAR

Production

Operation type: Underground
Production size: Small
Development status: Prospect

Geology

Host rock:Gneiss
Host type:Gneiss
Structure:Northern Wet Mountains, Ne-Striking Faults
Tectonic:Central Cordillera (Southern Rocky Mountains)

References

MRDSDC04234
DEP10017767
Reference{Deposit:: HANLEY, J.B., HEINRICH, E.W., AND PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING AND UTAH, 1942-1944, USGS PROFESSIONAL PAPER 227, P. 40.}{Deposit:: TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A. AND EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1:62,500.}{Deposit:: HEINRICH, E.W., 1948, PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADO: AMERICAN MINERALOGIST, V. 33, NOS. 7-10, P. 420-448, 550-587.}{Deposit:: CONSV. DIV. COMP. DATE, 1,64}
ReporterUnknown, Collins, Donna B.