2 Physical Properties
2.2 Tenacity
Not Available
Not Available
2.4 Solubility
Not Available
Not Available
2.5 Durability
Not Available
Not Available
2.7 Specific Gravity
4.33-4.422.32-2.38
1
7.18
2.10 Fracture
Not Available
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
2.12 Cleavage
Not Available
Not Available
2.14 Mohs Hardness
2.16 Chemical Composition
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)