MN680 Sample ID MN680 • Cabinet H Realgar and Orpiment 4.27cm W x 5.91cm H x 2.42cm D • 110g Sample TypeMineralColorRed, YellowLusterGreasy, pearly StreakOrangeCleavage/FracturePerfect/unevenSpecific Gravity3.24 Geographic Location/DateNevada Mohs Hardness 2 A small specimen of Orpiment, a yellow and orange mineral. There are small crystals in the specimen, covered in yellow dust. There does appear to be a matrix of black rock. When touched, dust comes off in large volumes. Description of Mohs scale here