Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.292.55-2.63
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Uneven
Cleavage
Very poor [100]
{001} Perfect, {010} Good
Mohs Hardness
5-5.56-6.5
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
KAlSi 3O 8Arthur Thomas , Gemstones (2009)