Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.563.82-4.00
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
{110} Perfect, {010} Indistinct
{???} Indistinct
Mohs Hardness
5.5-65.5
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Mn2+9(SiO 4) 4(OH,F) 2Anthony et al , Handbook of mineralogy (2001)