Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.76-5.032.34-2.51
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
None
None
Mohs Hardness
5.5-6.5-9999
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O