Tenacity
-
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.361.79
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Fibrous
Irregular/uneven
Cleavage
[110] perfect, [101] good, [010] distinct
Perfect on {10bar10}
Mohs Hardness
3.5-42.5
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)