Luster - vitreous, sub vitreous, waxy
Streak - white
Hardness - very hard, 9
Density - high density
Cleavage - none
Color - typically brown/grey, but can be colorful
Crystal system - hexagonal
Crystal form/habit - commonly a hexagonal prism
Extra notes - can be fluorescent, and is almost always a hexagonal prism form
Негізгі бет Minerals : Oxides - Corundum
Пікірлер: 8