Tenacity
Brittle
-
Solubility
Slowly dissolves in water
-
Durability
-
-
Specific Gravity
-99992.58-2.74
1
7.18
👆🏻
Fracture
Conchoidal
ConchoidalWalter Schumann, Splintery
Cleavage
None
{100} Distinct, {110} Distinct
Mohs Hardness
3.5-45.5-6
2
10
👆🏻
Chemical Composition
K2Mg2(SO4)3
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references