Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.363.29-3.33
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Fibrous
Uneven
Cleavage
[110] perfect, [101] good, [010] distinct
Perfect
Mohs Hardness
3.5-45
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(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)