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AUTOMALITE. 25 It is brittle. It is rather easily frangible. It is heavy. Specific gravity, 4.261, Ilisinger. 4.696, Hauy, Chemical Character. It is infusible before the blowpipe. Alumina, Silica, Oxide of Zinc, Iron, Sulphur, X.OSS, Constituent Parts. 60 4 24 9 0 3 Undecomposed, 42 4 28 5 17 4 100 Eckeberg, J. de Phys, an 14, p. 270. 100 Vauquelin, Annales du Mus. t. vi. p. 33. Geognostic and Geographic Situations. It occurs imbedded in talc-slate, along with galena, and has been hitherto found only at Fahlun at Sweden. Observations. In its crystallizations it nearly resembles both Ceyla- nite and Spinel: it is distinguished from the former by its more distinct green colour, foliated fracture, inferior hardness, superior specific gravity, and chemical composi tion : from the latter by colour, inferior lustre, perfect foliated fracture, low degree of transparency, inferior hardness, greater specific gravity, and chemical composi tion. 2. Ceylanitc.