MN205 Sample ID MN205 • Cabinet U Datolite 8.1cm W x 6.7cm H x 3.8cm D • 250g Sample TypeMineralColorPale GreenLusterVitreous StreakWhiteCleavage/FracturenoneSpecific Gravity2.84 Geographic Location/DateWestfield MA Mohs Hardness 7 pale greenish squat wedge-shaped crystals on one side of basalt rock Description of Mohs scale here