Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.19-3.562.67-2.73
1
7.18
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Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{110} Perfect, {010} Indistinct
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
5.5-63
2
10
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Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
CaCO 3Ulrich Henn and Claudio C.