1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.74-2.902.55-2.57
1
7.18
1.5 Fracture
Uneven, Gemstones (2009), Splintery
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on {100} and {001}
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
1.7 Mohs Hardness
1.8 Chemical Composition
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
KAlSi3O8