MN310 Sample ID MN310 • Cabinet E Lepidolite (Polylithionite-Trilithionite Series) 10.772cm W x 6.754cm H x 9.61cm D • 1022g Sample TypeMineralColorPurple grey and whiteLusterVitreous StreakWhiteCleavage/FractureBasal cleavageSpecific Gravity2.777 Geographic Location/DateParis ME Mohs Hardness 3 Scaly aggregate of small lilac plates (appearing similar to muscovite) upon a white-clear substrate (perhaps quartz) with some patches of another white mineral. Does turn a flame reddish. A note on nomenclature: Lepidolite is no longer an IMA accepted mineral. It has changed to mean a series of two (known) minerals that are impossible to distinguish without chemical testing. Description of Mohs scale here