MN207 Sample ID MN207 • Cabinet U Muscovite/Biotite 10.76cm W x 5.43cm H x 6.67cm D • 334g Sample TypeMineralColorsilvery gold/brownLusterMetallic StreakColorlessCleavage/FracturePerfect basalSpecific Gravity2.6 Geographic Location/DateNorth Carolina Mohs Hardness 1 Irregular intersecting flat planar mica crystals of small-medium size Description of Mohs scale here