Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.50-2.803.32
1
7.18
👆🏻
Fracture
-
-
Cleavage
Perfect
{???} Distinct, {???} Distinct, {???} Distinct
Mohs Hardness
5-6.5-9999
2
10
👆🏻
Chemical Composition
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)