Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.87-4.141.79
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Irregular/uneven
Cleavage
Poor on {120}, in traces on {001}
Perfect on {10bar10}
Mohs Hardness
5.5-62.5
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)