Mine detail: Rose Dawn Mine

Previously called 'North Mine'

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Location

Lat / long:

38.69778, -105.48308

Resource(B)

Primary:	Feldspar, Mica, Beryllium
Ore:	Beryl, Microcline, Muscovite
Orebody form:	LENTICULAR

Production

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

Geology

Host rock:	Biotite Gneiss, Migmatitie Gneiss
Host type:	Gneiss
Structure:	Thirtynine Mile Volcanic Field, Currant Creek Fault Zone And Related Faults
Tectonic:	Central Cordillera, Southern Rocky Mountains
Alteration processes:	Hydrothermnal Alteration

References

MRDS	D004933
DEP	10010881
Reference	{Deposit:: MINOBRAS 1974}{Deposit:: HANLEY HEINRICH AND PAGE 1950 PEGMATITES IN COLORADO, WYOMING AND UTAH 1942-1944; USGS PROFESSIONAL PAPER 227 P. 45-48}{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.}
Reporter	Foord, Suzann C, Collins, Donna B.