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STEENBEKGITE. 179 are striated parallel to tlieir intersections with o. Twins. Twin- face o. Cleavage, b, very perfect. Semi-transparent...trans lucent on the edges. Lustre adamantine. Cochineal-red, passing into lead-grey and scarlet-red. Streak scarlet-red. Sectile. 11 = 2 - 5. g = 8'0...8'2. Conducts electricity imper fectly. In the matrass sublimes unchanged. In the open tube yields a sublimate of undecomposed cinnabar and metallic mercury with a disengagement of sulphurous acid. In the matrass with soda yields a sublimate of mercury. Soluble in nitromuriatie acid, leaving a residuum of sulphur. Insoluble in hydrochloric and nitric acids, and in caustic potash. HgS, mercury 86-21, sulphur 13'79. Analyses of cinnabar a from Japan, b from Carinthia by Klaproth, c from Silberg near Olpe in Westphalia, d from Ilohensolms near Wctzlar by Schnabel:— abed Mercury . . . 84"60 85'00 86'79 85'43 Sulphur . . . 14-75 14-25 13-67 13'92 In attached crystals, single or in druses, granular and earthy masses, disseminated and investing other minerals. Cinnabar occurs usually in beds with mercury, amalgam, less frequently in veins with pyrite, quartz, calcite, &c. Is found at Almaden, Almadenejos and in the Asturias in Spain, Idria and Neumarktel in Camiola; Wolfstein, the Stahlberg, Moschel-Laudsberg, the Potzberg near Kusel, in the Palatinate, in many parts of Carinthia, Eisenerz in Stiria, Ilorzowitz in Bohemia ; Schemnitz, Kremnitz, Szlana and Eosenau in Hun gary ; Ilartenstein in Saxony, Clausthal in the Harz, Dum- brawa in Transylvania, the Ural, and in large quantities in Mexico, Peru, China and Japan. The massive variety from Idria, called lebererz or hepatic cinnabar, of a dark red or black colour (a = G'287) according to Schrdtter, consists of:— Cinnabar 90-40 Idrialine 4’2l Sulphide of iron . . . 0-42 Sulphate of lime . . . o-03 Sulphur 0*54 Silica 2-73 Alumina O'76 67. STERNBERGUTE.—Stcmbergite; Dufrenoy. Flexible silver; Bournon. Prismatischer Eutom-Glanz j Mohs. Stern- Wgit; llausmann, liaidingcr. I G