Tenacity
-
-
Solubility
Insoluble in acids
-
Durability
-
-
Specific Gravity
4.20-4.302.50-2.80
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
{110} good, 100 moderate, parting on {092} and {011}
Perfect
Mohs Hardness
6-6.55-6.5
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)