MN638 No Image! Sample ID MN638 • Cabinet T Green Apatite 8.5cm W x 7.5cm H x 7cm D • 926g Sample TypeMineralColorGreen and BrownLusterVitreous StreakWhiteCleavage/FracturePoor Cleavage and Uneven FractureSpecific Gravity3.1 Geographic Location/DateOntario, CA NAMohs Hardness 6 Multiple specimens of Green Apatite. The largest sample was measured. Extremely brittle with poor cleavage and uneven fracture. While testing, sample broke apart into smaller pieces (multiple times), which was why the largest sample was being measured instead. Streak is white, and luster is vitreous. One of the samples has a green apatite crystal with a calcite matrix. Description of Mohs scale here