s 4 Rhomb-spar.. 5 J 7 Semi-hard. Brittle. £afily frangible. Specific gravity.—2,480, Chemical Character. Before the blow pipe it is infufible without addi- tl °n. It produces very little effervefcence with acids, “ Ve n when powdered. Constituent Parts. 1 According to Klaproth, b. 1. f. 304, it affords, From the Tyrol. From Sweden. Carbonate of lime 52 73>° Carbonate of magnefia 45 25,0 Oxyd of iron and manganefe 3 2,25 100 100,25 Geognostic Situation. Occurs imbedded in rocks that belong to the talc getl ds, fueh as chlorite and talc Hate. 2 X Geographic