Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.363.49-3.57
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Fibrous
Subconchoidal, Uneven, Conchoidal
Cleavage
[110] perfect, [101] good, [010] distinct
[001] Perfect
Mohs Hardness
3.5-48
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al2SiO4(F,OH)2