STEI5MANNITE. 199 Prismatic. b 010, n 210, r 111. r - o 1 - »» eig. 198. nb nn' 69° 62' 119 44 b I * ^ »/ 01 fc I IoTt- Cleavage, n. Fracture conchoidal... even. Opaque. Lustre metallic. Lead-grey. Streak the same. Brittle, ii = 2-5...3-0. g = 5’8 .. .6'54. Melts very easily before the blowpipe, and affords the reac tions of arsenic, antimony and lead. Pb’Sb, lead 66-83, antimony 16-65, sulphur 16-62, a large pro portion of the antimony being sometimes replaced by arsenic. Analyses of sehulzite a from Meredo by Sauvage, b of the variety called geokronite from Sakla by Svanberg, c from Val di Castello by Kerndt:— a b C Lead . . 64-89 66-45 66-64 Copper . 1-60 1-61 1-53 Iron . . — 0-42 — Zinc . . — Oil — Antimony 16-00 9-58 9-69 Arsenic . — 4’69 4'72 Sulphur . 16-90 16-26 17-32 Very seldom crystallized, usually massive. Is found in galena at Meredo in the province of Gallicia in Spain, at Val di Castello near Pietrosanto in Tuscany, the geokronite in the Bilver mine of Sahla in Sweden. Kilbrickenite is supposed by liammelsberg to be sehulzite. Blueish-grey. u = 2-0...2-6. o = 6'407. Slowly soluble in warm hydrochloric acid. Analysis by Apjohn:— Lead 68’87 Iron °’ 3 8 Antimony .... 1439 Sulphur 16’36 Is found at Kilbricken in the county of Clare in Ireland. SR. STEINMANNITE.—Oktaedrischer Blei-Glanz ; Mohs. Steinmannit; Ilausmann, Ilaidinger. Cubic. x 4