frafltujte .qr left,,Pf-.l° 1 ^J. ed ’ paying', fi$4 r three-fold cleavage. ‘ ,.. : .rjh: ?ps ■_■• : Fragments rhomboidal, approaching to cubic . Occurs in diftintt concretions, which are ftraight lamellar, and are fropi thin, to.very thick; they are thicker at one extremity than'another, hence they are rather^wydge-fraped,- and. thpir. crofs. fm&ure ex- hibitsafc^pifprmly divergjn£ : aipe.&. fn • r" rr jThe paf&ye varieties are.tranfiucent, tKe cryftalliz- ed trai^parentand.femitranfoarent, and is duplicating. ' ‘ Soft, Scratches calc- fpar* but^isfcratqhot ^by-^ u ° r ^P ar * . .. , t bin, ,v--in'■ 1: 0.." ' Not particularly brittle. Eafily frangible. , 1 Heavy. >t . . • .y •;*•••»”'3 . .. ■ Specific gravity.—4)300 t0 4i5°°* - ■!. r - ' t-.T'.'O li 1 * ■■ , 1 ,= ’ ,-y • ■ • ■ rr ■ rt-Ti s ■ Chmical-Characters,^ .y It melti without addition before the blow,pipe into a folid white enamel, and when pure does not e er v efce with acids. Constituent Carts. 67,2 Barytes 84 Sulphuric acid 13 "Water °<3 Bagman. Wither,® 4C Klaproth