Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.362.44-2.62
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Fibrous
Uneven
Cleavage
[110] perfect, [101] good, [010] distinct
Indiscernible
Mohs Hardness
3.5-42.5-5.5
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references