1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Not Available
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
1.6 Cleavage
{100} and {010} perfect
None, may show partings on {0001} and {10 1 1}
1.7 Mohs Hardness
1.8 Chemical Composition
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.
Fe 2O 3Arthur Thomas , Gemstones (2009)