Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.652.55-2.63
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Perfect {10 1 0}
{001} Perfect, {010} Good
Mohs Hardness
5.5-66-6.5
2
10
👆🏻
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
KAlSi 3O 8Arthur Thomas , Gemstones (2009)