Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.33-4.422.9-3.5
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Perfect
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
4.55.5-6
2
10
👆🏻
Chemical Composition
Ca(Nd,Ce,La) 2(CO 3) 3F 2Ulrich Henn and Claudio C.
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)