KLIXOCLASE. 511 Before the blowpipe emits fumes of arsenic and melts. Soluble in nitric acid. Cu 5 As + 2H, arsenic acid 34 4 08, oxide of copper 69 4 89, water 5 4 43. Analysis by Turner:— Arsenic acid 33 4 78 Oxide of copper 59'44 Alumina I 4 77 Water 5 4 oi In mammillary and reniform masses, having a drusy surface, and consisting of concentric layers. Is said to have been found in the county of Limerick. 341. CORISrWALLITE.—Comwallit; Zippe. Amorphous. Fracture conchoidal, passing into verdigris- green and blackish-green, it = 4 4 5. a = 4 4 106. In the matrass yields water. Before the blowpipe on char coal emits fumes of arsenic, and yields a bead of copper sur rounded by a brittle crust. Cu’As + fill, arsenic acid 32 4 07, oxide of copper 65 4 37, water 12 4 66. Part of the arsenic acid is replaced by phosphoric acid. Analyses by Lerch :— Arsenic acid 29'78 30 4 6fi Phosphoric acid 2 - fi4 i 4 77 Oxide of copper fifi'OO 64 4 22 Water 12 ' 68 13'3« Is found in botryoidnl, reniform and compact masses, with olivenito in Cornwall. 342. KLINOCLASE.—Oblique prismatic arseniate of cop per ; Phillips. Aphanese; Beudant. Diatomer Ilabronem- Malachit; Mohs. Klinoklas; Ilausmann. Abichit; Ilai- dinger. Oblique. 101,100 = 24° 18'; 111,010 = 32° lfi'; 101,001 = 60° 12'. a 100, c 001, s 302, r 101, m 110. z 4