MN604 Sample ID MN604 • Cabinet Z Chiastolite 4.72cm W x 7.43cm H x 4.58cm D • 158g Sample TypeMineralColorGrey with brown cross-shaped spotsLusterVitreous StreakBlack and BrownCleavage/FractureDistinct cleavage and uneven fractureSpecific Gravity2.8 Geographic Location/DateLancaster MA Mohs Hardness 6 A grey mineral with cross-shaped brown spots. Has a vitreous luster and distinct cleavage. One notable characteristic of this specimen is the brown cross-shaped crystals in its cross-section. Description of Mohs scale here