MN315 Sample ID MN315 • Cabinet E Phlogopite 8.537cm W x 2.555cm H x 5.564cm D • 236g Sample TypeMineralColorBrownish grey/blackLusterSubmetallic StreakWhiteCleavage/FractureBasal CleavageSpecific Gravity2.744 Geographic Location/DateRenfrew Canada Mohs Hardness 3 A layered pseudohexagonal shiny mineral. Thin and flexible sheets peel off easily. It is asteriated. There is a notable difference in hardness between the face and non-face sides. On faces the hardness is a 2. On non-faces the hardness is a 4. Hardness does not change directionally. Description of Mohs scale here