i Lithomarge. 391 .FIRST SUBSPECIES. Friable Lithomarge, or Rockmarrow. .■.701 u.i.i:'r’.o •*: - - Zerreibliches Steinmark.—Tferner. r: ■ v. ■ "■ External Characters. Its colours are fnow white, yellowifh white, and feldom reddiih white. . . .. Is ufually maffive, occurs ^ alfo as a cruft, and djf- •r i-.i / . -au.yr ::«-•»«. • of.? lemmated. . . , > # •* ^ r * rt*/r Its hiftre is feebly, glimmering. t f Is generally coherent, alfo 5 fometimes loofe, and is compofed"of fine fcaly r particles..that approach t» dufly. ' o * Feels greafy. . Adheres to the tongue. Geognostic Situation. Found in confiderable quantity in the Saxon tin veins. ' 3 £ 3 SECOND X t