1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.60-2.654.33-4.42
1
7.18
1.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
Not Available
1.6 Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.