Tenacity
-
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.362.20-2.26
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Fibrous
Uneven
Cleavage
[110] perfect, [101] good, [010] distinct
Perfect on {110}
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references