CALEDONITE. 561 PbCl + 2Pb + Pb 3 V 3 . Analysis of vanadinite from Zimapan by Berzelius:— Basic vanadiate of oxide of lead . . 74-00 Basic chloride of lead 25-33 Hydrate of oxide of iron .... o-67 In vanadinite from Zimapan, Del Eio found oxide of lead 80-72, a metallic (vanadic) acid 14'8. Is found in globular aggregations at Zimapan in Mexico, in crystals with pyromorphite at Beresowsk in the Ural, Wanloek- head in Dumfriesshire. 396. DECHENITE. Lustre greasy. Dull red...yellowish-red. Streak yellowish. H = 4-0. g = 5'81. Alone before the blowpipe fuses into a yellowish glass. On charcoal fuses into a yellowish-green bead containing some grains of lead. With borax and salt of phosphorus gives the reaction of vanadic acid. With soda forms a white enamel containing grains of lead. PbV, vanadic acid 45'33, oxide of lead 64-07. Analyses by C. Bergemann:— Vanadic acid 62-02 53 - 72 60 57 Oxide of lead 47 - io 46'io 49 27 Is found in small botryoidal masses, with galena, cerussite and pyromorphite, near Nieder Sehlettenbach in the Lauterthal M Rhenish Bavaria. SULPHATES WITH CAEBONATES. 397. CALEDONITE.—Cupreous sulphato-carbonate of lead ; Phillips. Caledonite ; Beudant. Paratomer Blei-Baryt; Molis.' Caledonit; Hausmann, llaidinger. Prismatic. on,oio=33 0 o'; 101,001=54° 3i'-5 ; 110,100=47° 30'. 021, e 101, m 110, r 111, s 223. FIG. 658. a 100, c 001, ca 00° 1 O' me 00 O ee 109 3 xxf 143 60 ma 47 30 mm' 85 0 rr w rr r'r" ss ss" 75° 0' 83 15 128 36 66 25 73 26 108 20 B b 5
