Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.42-2.585.00-5.30
1
7.18
👆🏻
Fracture
Conchoidal, Splintery, ConchoidalWalter Schumann
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
[010] perfect
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
4-56
2
10
👆🏻
Chemical Composition
AlPO4 · 2(H2O)
Fe 2O 3Arthur Thomas , Gemstones (2009)