Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.33-4.423.87-4.14
1
7.18
👆🏻
Fracture
-
Subconchoidal, Conchoidal
Cleavage
Perfect
Poor on {120}, in traces on {001}
Mohs Hardness
4.55.5-6
2
10
👆🏻
Chemical Composition
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references