MN206 Sample ID MN206 • Cabinet U Prehnite 9.38cm W x 7.22cm H x 7.16cm D • 422g Sample TypeMineralColorPale GreenLusterDull StreaknoneCleavage/FracturePoor, badSpecific Gravity2.72 Geographic Location/DateNew Jersey Mohs Hardness 7 Pale green small curved edged crystals in massive formation in porous white rock Description of Mohs scale here