Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.29-3.333.85-3.94
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
Perfect
{010} Good, {100} Distinct
Mohs Hardness
55-5.5
2
10
👆🏻
Chemical Composition
(Ca,Ce) 4 Na(Na,Ca) 2 Ti(Si 2 O 7 ) 2 F 2 (O,F) 2 Michael O’Donoghue, Gems, Sixth Edition (2006)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)