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Barofelenite. ' 141 dal lamins fet ln different diredfcions. Sp. gr. 4,330.—It contains, by Dr. Withering’s account, <>9,5 per ct. of barofelenite and 0,5 of calx of iron. Semitranfparent quadrangular priffns of this fa- mily, analyzed by Mr. Afswelius, afforded him 79 of barofelenite, 6 of felenite, 3 of filex, 4 argill and iron, and 1,5 water. White rhomboidal lamellar cryüals from Kil- patrick hillsnear Glafgow, vvhofe fp. gr. was from 4,402 to 4,44, contain by Dr. Withering’s account the pureft barofelenite, 100 parts affording 67,2 of pure earth and 32,8 of vitriolic acid. His ana- lyfis is a model of fkill and accuracy *. Foliated barofelenite often bears a ftrong refem- blance to Feltfpar, and I make nodoubt has oftea been miftaken for it. See Lelke K. 137. 4th Family. Striated or Fibrous. Yellowifli white, or bluilh grey, or brownilh or reddifh yellow. It occurs in fomewhat rounded maffes, of un- even furface. Luftre, filky, or waxy, 2. Tranfparency 2.t. I'rafturc, ftriated, converging to a common, center. Hardnefs 5. Sp. gr. from 4,000 to 4,4409. * Mr. Werner has of lare diffinguifhed, and with great propricty, the lamellar, and granularly foliated. The gra nulär differs from the foliated as granulär limeftonc from calcareous fpar. The