lamprophane, lamprophanite

[Gr. lampros shining, and phainomai =to appear.] Min.: A mineral found in thin, cleavable folia at Longban, Wermland, Sweden. Hardne , 3; specific gravity, 3:07; luster, pearly; color and streak white. Composition: Sulphuric acid, 11:17; oxide of lead, 28.0; protoxide of manganese, 7.90; magnesia, 526; lime, 24.65; soda and potash, 14'02; water, 8:35. IMG:content-0345.png:[blocks in formation]