168 SULPHIDES. MnS, manganese 63-27, sulphur 36’73. Analysis of alabandine from Transylvania, by Arfvedson: Manganese . . . 62-10 Sulphur '. . . . 37'90 In crystals, usually in granular masses. Is found in veins with nagyagite, blende, pyrite, kohlerite, quartz, at Nagyag in Transylvania, in a vein of quartz at Eo^inha da Gama in the province of Minas Geraes in the Brazils, in Mexico. 58. HATJERITE—Hauerit; Hausmann. Cubic. a loo, o ill, d on, f 310, hemihedral with parallel faces. 321. The forms f, s are na. 159. aa! 90° o' f'W 18° 26' 00’ 70 32 fd 26 34 oa 64 44 sa' 36 42 dd’ 60 0 so 22 13 da' 45 0 "Forms and combinations, o, oa, os', oas', oadf', oads'. Cleavage, a, perfect. In very thin plates translucent and brown ish-red by transmitted light. Lustre adamantine, inclining to metallic. Dark reddish-brown... brownish-black. Streak brownish-red. n = 4’0. G = 3'483. In the matrass yields a sublimate of sulphur, leaving a green residue which before the blowpipe becomes brown on the surface. After all the sulphuret of manganese is decomposed imparts a violet colour to salt of phosphorus in the outer flame. "With soda on platinum foil affords the reaction of manganese. MnS a , manganese 40'27, sulphur 63'73. Analysis by A. Patera:— Manganese . . . 42'97 Iron 130 Sulphur .... 53-64 Silica 1-20 In crystals and spherical groups of crystals.