Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.292.60-3.02
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
-
Cleavage
Very poor [100]
Perfect
Mohs Hardness
5-5.5-9999
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Mg,Fe2+ ) 5Al(Si 3Al)O 10(OH) 8Anthony et al , Handbook of mineralogy (2001)