MN336 Sample ID MN336 • Educational Cabinets Pyrite 4.376cm W x 3.936cm H x 2.558cm D • 60g Sample TypeMineralColorYellowLusterMetallic StreakBlackCleavage/FractureUneven fractureSpecific Gravity5 Geographic Location/Date Mohs Hardness 5 A collection of four. The representative is the largest. It is a brass-yellow and of massive habit. Description of Mohs scale here