Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.87-4.142.55-2.65
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Poor on {120}, in traces on {001}
Perfect {10 1 0}
Mohs Hardness
5.5-65.5-6
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)