% b I ill 52 G SULPHATES. If a b Phosphate of oxide of lead . . — 7*79 Phosphoric acid — Oxide of lead 37*51 Alumina 34*23 Bed oxide of iron . . 0*20 Lime Chloride of lead . . 2*27 — Sulphuric acid Si 2*11 Water 16*13 So found in the lead mines of Huelgoet near Poullaouen in Bretagne and at la JSussiere near Beaujeu in Prance. SULPHATES. ill 360. ANGLESITE.—Sulphate of lead; Phillips. Plomb sulphate; Ilauy. Prismatischer Blei-Baryt; Mohs. Bleivit- riol; Hausmann. Anglesit; Haidinger. Prismatic. 011,010= 31° Si'; 101,001 = 52° 16'; 110,100 = 51° 49' a loo, b oio, e 001, d 012 , I 014, O 101, m 110 h 430, 210, Z 111 r 112 , o 116, t 211, y 212, p 234 4,12. be 90° o' h\' 92° 43' Ob 74° 63' ca 90 0 zz 67 47 6c 19 22 ab 90 0 zz!' 90 19 pa 67 51 dd' 78 45 zz' 128 54 pb 41 1 U 44 40 ra 63 28 pc 54 18 00 104 31 rb 55 24 ya 45 3 mm 76 22 rc 46 16 yb 63 19 nri 115 6 6a 78 10 yc 66 51 ta 36 40 FIG. 518. tb 69 20 tc 71 66 Za 23 1 \ " lb 73 29 a lc 73 7 FIG. 519. a* o> * A