Mine detail: Black Cloud Mine

Previously called 'Spillman Prospect'

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Location

Lat / long:

38.93833, -105.21335

Resource(B)

Primary:	Feldspar
Tertiary:	Quartz, Thorium, Niobium (Columbium), Tantalum, Beryllium, REE
Ore:	Apatite, Beryl, Columbite, Feldspar, Fluorite, Microlite, Pyrochlore, Quartz, Tantalite
Orebody form:	LENSOID

Production

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

Geology

Host type:

Granite

References

MRDS	DC04051
DEP	10017698
Reference	{Deposit:: HEINRICH, E.W. AND GROSS, E.B., 1960, FLUORCITE AND ASSOCIATED MINERALS FROM THE BLACK CLOUD PEGMATITE, TELLER COUNTY, COLORADO: AM. MIN., VOL. 45, NO. 3 AND 4, PG. 455-459.}{Deposit:: APPENDIX TO SPECIAL MAP NO. 10, MISSOURI BASIN STUDIES, P. 131, 1946}{Deposit:: USBM MIN. EXAM. FILE}{Deposit:: MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S. AND SHANNON, S.S., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITES IN SIX WESTERN STATES, USDI BM INFO CIRC 8298}
Reporter	Unknown, Foord, Suzann C