Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.2-3.4-9999
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
Perfect on [001] imperfect on [100]
-
Mohs Hardness
3-9999
2
10
👆🏻
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
SiO2, Al2O3, CaO, MgO, FeO