Mine detail: Drew Hill Prospect

Previously called 'Drew Hill Pegmatites Nos. 1 and 2'

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Location

Lat / long:

39.82777, -105.31475

Resource(B)

Primary:	Beryllium
Tertiary:	Feldspar, Mica
Ore:	Chrysoberyl, Muscovite
Gangue:	Tourmaline
Orebody form:	TABULAR

Production

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

Geology

Host rock:	Idaho Springs Formation-Mica Schist Unit
Host type:	Mica Schist
Associated rock:	Granitic Pegmatite
Associated type:	Pegmatite
Structure:	Front Range Uplift, Denver Basin, Hurricane Hill Fault System, Unnamed Syncline
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010192
DEP	10013734
Reference	{Deposit:: SHERIDAN, D.M., AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520 (INCL. GEOLOGIC MAP OF RALSTON BUTTES QUAD).}{Deposit:: HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-44: USGS PROF. PAPER 227, P. 85}{Deposit:: USGS COMMODITY FILE, GP III, REEL 31, DOCKET 9933; GP III, REEL 40, DOCKET 12738; GP III, REEL 12, DOCKET 2701, 1946 (FROM ORIGINAL CRIB RECORD)}
Reporter	Schwochow, Stephen D.