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406 HYDROUS SILICATES. ESi + H 2 , where E denotes the protoxides of cerium, lan- thanium, and didymium. Analyses of cererite Hermann:— Carbonic acid Silica . . . Protox. cerium Ox. lanthanium Alumina . Bed ox. iron. Lime . . . Ox. manganese Copper . . Water . . by Vauquelin, I by Hisinger, c by a b c . . — — 4-62 . . 17 18-00 16-06 . . 67 68-69 26-55 . . — — 33-38 . — — 1-68 . . 2 2-00 3-53 . . 2 1-26 3-66 ■ . — — 0-27 • ■ — — trace . . 12 9'60 9-10 Hermann is supposed to have i/aiiicu. a mcuuiiuiuai nuAiure ol caruonate 01 lime. Was found in crystals and granular masses in St. Goran’s mine at Biddarhytta in Sweden. A mineral containing cerium (Hermann’s ochroit) was found by Klaproth to consist of: silica 34'50, oxide of cerium 64-6, red oxide of iron 3'60, lime vas, water 5 00. 238. SMITHS OXITE.—Siliceous oxide of zinc; Phillips. Zinc oxide silicifere; Hauy. Prismatischer Zink-Baryt; Mohs. Zinkglas; Hausmann. Galmei; Haidinger. Prismatic. 011,010=68°20'; 101,001=25°ie'o; 110,100 = 61°56'-6. a 100, b 010, C 001, e Oil, u 021, w 031, h 102, I 101, f 201, V 301, 2 501, r 701, m 110, g 310, k 610, s 211, t 231, x 411, z 121, n 341. The forms c, e, u, tv, k,f v, q, r, t, z, n appear to be generally hemihedral with symmetric faces; I, s are also frequently hemihedral, i or « and’ the other combina tions of hemihedral forms being on opposite sides of the zone ab. be 90° O' he 13° 34' ma 61° 57' ca 90 0 le 26 47 mb 38 3 ab 90 0 f c 44 0 9 a 23 4 ec 31 40 VC 56 23 ka 14 20 ue 60 58 qc 67 30 xa 81 19 we 61 37 re 73 31 xb 74 10
