Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA
Ref.: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1); Rocks & Min.: 63:457.
A pegmatite mine located in the NE¼ NE¼ sec. 9, T.13S., R.70W.
Mineralization is a zoned pegmatite body in granite. Core zone: quartz; outer zone: quartz-feldspar-fluorite.
Workings include a large open cut with 2 benches.
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Map Reference: 38°56'18"N , 105°12'48"W
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Mineral List:34 entries listed. 23 valid minerals.
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