Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.561.79
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Irregular/uneven
Cleavage
{110} Perfect, {010} Indistinct
Perfect on {10bar10}
Mohs Hardness
5.5-62.5
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)