MN329 Sample ID MN329 • Cabinet E Goethite 6.655cm W x 7.092cm H x 9.289cm D • 404g Sample TypeMineralColorBlackLusterSubmetallic StreakBrownCleavage/FractureHackly fractureSpecific Gravity3.37 Geographic Location/Date Mohs Hardness 5 Shiny black stalactitic crystals protruding from a small base rock. Some crystals are rounded at the top but most have tops broken off. In these and on the sides of the crystals one can see a silky surface. Streak is orange-yellow-brown (like an ochre color). Description of Mohs scale here