MN630 No Image! Sample ID MN630 • Cabinet T Actinolite 8cm W x 10.5cm H x 5.5cm D • 356g Sample TypeMineralColorBlackish-GreenLusterVitreous Luster StreakWhiteCleavage/FractureGood cleavage and splintery fractureSpecific Gravity2.9 Geographic Location/DateChester, VT NAMohs Hardness 5 A small specimen of Actinolite. Black-green in color, with a vitreous luster. Streak is colorless, with good cleavage and splintery fractures. Description of Mohs scale here