Mine detail: Ladwig-Grosso Pegmatite

Previously called ''

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Location

Lat / long:

39.79638, -105.27114

Resource(B)

Primary:	Mica, Beryllium
Tertiary:	Quartz, Feldspar
Ore:	Beryl, Muscovite, Quartz
Orebody form:	TABULAR

Production

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

Geology

Host rock:	Idaho Springs Formation---Plagioclase-Quartz-Biotite Gneiss And Plagioclase-Hornblende Gneiss, And Amphibolite;Pegmatite
Host type:	Gneiss,Amphibolite
Associated rock:	Pegmatite
Associated type:	Pegmatite
Structure:	Front Range Uplift, Denver Basin, Junction Ranch Fault Zone
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010194
DEP	10013736
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:: MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 28}{Deposit:: USBM MIN. EXAM. FILE, REPT. OF 1/26/59 (FROM ORIGINAL CRIB RECORD)}
Reporter	Schwochow, Stephen D., Spanski, Gregory T.