Ref.: Rocks & Minerals: 75(3): 156-169; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 32 (Table A-1).
Beecher Nos. 1-3 and Black Diamond
A pegmatite mine complex located in the NW¼ sec. 18, T.4S., R.5E., 5 miles southeast of Custer.
Mineralization is a lenticlar, zoned pegmatite body concordant in quartz-mica schist.
Workings include 3 open pits, 2 shafts, 2 inclines and 6 drill holesplus several trenches.
Mineral list contains entries from the region specified including sub-localitiesMineral List:36 entries listed. 17 valid minerals.
Localities in this Region:
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