Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.24-2.292.67-2.73
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
Very poor [100]
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
5-5.53
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaCO 3Ulrich Henn and Claudio C.