Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.792.58-2.74
1
7.18
👆🏻
Fracture
-
ConchoidalWalter Schumann, Splintery
Cleavage
{100} and {010} perfect
{100} Distinct, {110} Distinct
Mohs Hardness
65.5-6
2
10
👆🏻
Chemical Composition
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.
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