The minable spodumene ore in the Kings Mountain area, above a depth of 300 feet, contains about 40,000 tons of beryl, equivalent to 6, 000 tons of BeO, if 80 percent of the BeO is assumed to be in beryl. Other pegmatite in that area contains an additional 238,000 tons of beryl, or 35, 900 tons of BeO. On the basis of the same assumptions the spodumene ore above a depth of 300 feet in the Beaverdam Creek area contains 6,000 tons of beryl, or 800 tons of BeO, and all other pegmatite in that area contains an additional 13, 000 tons of beryl, or 1, 700 tons of BeO. The entire tin-spodumene belt contains 823, 000 tons of beryl, equivalent to 122,800 tons of BeO. Little beryllium was found in the Piedmont province outside of the tin-spodumene belt. CIRCULAR 309 PLATE 2 EXPLANATION Hornblende schisl (Some layers contain dolomite, pyrite, chlorite, or glaucophane.) Contact, showing dip; dashed where approximately located Fault showing dip X45 Strike and dip of foliation Plunge of spodumene crystals in pegmatitẽ-*^ 55 Strike and dip of foliation and plunge af lineation Rim of opencut NE 5-i Location and number of sample Contour interval 10 feet Datum is mean sea level
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