Tenacity
-
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.50-3.533.19-3.56
1
7.18
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Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
111 (perfect in four directions)
{110} Perfect, {010} Indistinct
Mohs Hardness
105.5-6
2
10
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Chemical Composition
C
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)