Document Jvdb5Yz552NKeYxd016vb9wNv

ANTHOPHSLLXTE Orthorhombic. Axial ratio a : b 0*5137 s 1. Crystals rare, habit prismatic (nan* ** 110 A 1X0 5U- 25*). Commonly lamellar, or fibrous massive; fibers often very slender; in aggregations of prisms. Comp;. - (Mg,Fe)SiG0 , corresponding to enstatiteliypersthene in the pyroxene group, Aluminum is sometimes present in considerable amount. There is the same relation in optical character between anthophyllite (+} and gedrite (-) as between enstatite and hypersthena (of. Figs. 859 8iu0, p - 553). Var. Anthophyllite, Mg ; Fe Ij. ; 1, 3 j 1, etc. For > i 1 the percentage composition is; Silica 55** iron protoxide 1,6*6, magnesia 27-8 100. Anthophyllite some times occurs. In -forms resembling asbestos. Copied from - Dana, S. and W. s. Ford, A textbook of mineralogy. John Wiley.' 1. X. kth ed. I9 32 , p. 57 K . E 0003779