b'\n_START_ARTICLE_\nTurmalin\n_START_SECTION_\nKemijska formula\n_START_PARAGRAPH_\nNa(Li, Al)3Al[(OH)4/(BO3)3/Si6O18]\n_START_SECTION_\nBarva\n_START_PARAGRAPH_\nBrezbarven, ro\xc5\xbenat, zelen, moder, \xc4\x8drn, rjav, prozoren do prosojen, steklen sijaj.\n_START_SECTION_\nPrelom\n_START_PARAGRAPH_\n\xc5\xa0koljkast.\n_START_SECTION_\nKristali\n_START_PARAGRAPH_\nTrigonalno, prizme, vra\xc5\xa1\xc4\x8deni in prosti kristali.\n_START_SECTION_\nTrdnost\n_START_PARAGRAPH_\nKrhek.\n_START_SECTION_\nNahajali\xc5\xa1\xc4\x8da\n_START_PARAGRAPH_\nNahaja se v pegmatitih, v hidrotermalnih \xc5\xbeilah, v pnevmatolitskih rudi\xc5\xa1\xc4\x8dih in v metamorfnih kamninah.\n_START_SECTION_\nUporaba\n_START_PARAGRAPH_\nFasetni, redkeje kabo\xc5\xa1onski brus.'