Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.33-4.425.00-5.30
1
7.18
👆🏻
Fracture
-
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Perfect
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
4.56
2
10
👆🏻
Chemical Composition
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.
Fe 2O 3Arthur Thomas , Gemstones (2009)