Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.82-3.973.76-3.77
1
7.18
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Fracture
Subconchoidal, Conchoidal
-
Cleavage
Perfect on [001] and [011]
{110} Perfect, {110} Perfect
Mohs Hardness
5.5-65-6
2
10
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Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.