EntityQ585765· pop 7· linked from 6 articleskassiteSign in to saveoxide mineralConnectionsRussiaCountryArkansasEntitymass densityEntitychemical formulaEntityKola PeninsulaEntityMohs scale of mineral hardnessEntityrefractive indexEntitymolecular massEntityrutileEntitymassifEntityilmeniteEntitypegmatiteEntitycleavageEntitybirefringenceEntitycrystal systemEntitystreakEntitypleochroismEntitytitaniteEntitycrystal twinningEntityperovskiteEntityCategoriesMinerals in space group 14Monoclinic mineralsOxide minerals