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104 DOLOMITE FAMILY. It is semi hard. It is brittle. Specific gravity, 2.8S5. Chemical Characters. It dissolves slowly, and with little effervescence, in ni trous acid; but more rapidly, and with increased effer vescence, when the acid is heated. Constituent Parts, Carbonate of Lime, - - 53.00 Carbonate of Magnesia, - 42.50 Carbonate of Iron, with a little Man ■ ganese, - - - - 3.00 98.50 Klaproth, Beit. b. iii. s. 290. Geognostic and Geographic Situations. It is found at Miemo in Tuscany, imbedded in gyp sum ; and Mr Gieseke met with it in kidneys, along with wavellite, farragonite, and calcedony, in decomposed wacke, at Kannioak, in Omenaksfiord in Greenland. Observations. This mineral was first observed by the late Dr Thomp son ot Naples, who sent specimens of it to Klaproth for analysis. It is named Miemile, after the place where it was discovered. Second