C ) FIRST SUB SPECIE . , Common Schorl. , Gemeiner Schorl. —-Werner. ¥ jj 0tlle °f the varieties of bafdtes cryftallizatns, Wall, t. i, 333’—Schwartzer-ftangen fchorl, Wid. p. 279— ® c horl, Kirw. vol. 1. p. 265 —Sorlo-ncro, Nop- p. 146. Tourmaline, Lam. f a. p. 295. -Le (chorl noire,Brocb. ' *• p. 226—Tourmaline noire.»Huuy, t. 3. p. 31. External Characters. ^ ts colour is velvet black, of various degrees of in- eri fity. . ^ occurs often maffive and difieminated, feldom *°Ued pieces, and frequently cryftallized. Co ^ s Cr y^ a l s are three-fided prifms, with cylindrically bv i CX ^ atera ^ pl anes > and acuminated on both ends tjj ree planes, which, on the one extremity are fet on ^ ateral edges, on the other, on the lateral planes. {■q^ 6 cr yftals aremoltly acicular: of r en alfo broken, i^ e w kh the fragments a peculiar kind of frag- ^ { 'i\ ° nC ° r ^ recc ‘ a : and are imbedded. The la- ' ^ r om n, anCS are lon S itudilial ly ftreaked, and alternate lhmin g to gliftening._ R Internally