Tenacity
Brittle
Brittle
Solubility
Readily soluble in water
Readily soluble in HF
Durability
-
-
Specific Gravity
2.5622.86-2.94
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
Good on {0001}
None observed
Mohs Hardness
3-3.56.5-7
2
10
👆🏻
Chemical Composition
KNa22(SO4)9(CO3)2Cl
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references