Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
2.363.60-3.61
1
7.18
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Fracture
Uneven, Subconchoidal, Fibrous
Conchoidal
Cleavage
[110] perfect, [101] good, [010] distinct
Imperfect/fair/absent
Mohs Hardness
3.5-48-8.5
2
10
👆🏻
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references