MN629 No Image! Sample ID MN629 • Cabinet T Datolite 8cm W x 11cm H x 6.5cm D • 432g Sample TypeMineralColorWhite crystals with Grey matrixLusterVitreous/Greasy StreakWhiteCleavage/FractureNo cleavage and uneven fractureSpecific Gravity2.1 Geographic Location/DateWestfield, MA NAMohs Hardness 4 Two samples of Datolite with white crystals in a grey matrix. Has no cleavage and has an uneven fracture. Has a white streak with a vitreous/greasy luster. Description of Mohs scale here