MN403 Sample ID MN403 • Cabinet F Tourmaline 11.52144cm W x 6.01091cm H x 5.97662cm D • 662g Sample TypeMineralColorBlackLusterSilky StreakColorlessCleavage/FractureIndistinct/UnevenSpecific GravityNA Geographic Location/DateQuadeville Mine Canada Mohs Hardness 8 Large black opaque tourmaline with a formation of previously identified whiteish quartz and moonstone. Description of Mohs scale here