1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.28-3.383.65-4.55
1
7.18
1.5 Fracture
Splintery, UnevenArthur Thomas, Difficult, Fibrous
ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Good on [110]
None, but may exhibit slight parting
1.7 Mohs Hardness
1.8 Chemical Composition
NaAlSi 2O 6Ulrich Henn and Claudio C.
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)