Tenacity
Brittle
-
Solubility
Soluble
insoluble
Durability
-
-
Specific Gravity
4.0142.36
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Subconchoidal, Fibrous
Cleavage
None
[110] perfect, [101] good, [010] distinct
Mohs Hardness
4-53.5-4
2
10
👆🏻
Chemical Composition
PbAl3(PO4)(SO4)(OH)6
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references