1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.00-5.304.33-4.42
1
7.18
1.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Not Available
1.6 Cleavage
None, may show partings on {0001} and {10 1 1}
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.