Tenacity
Brittle
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.83-3.892.36
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Subconchoidal, Fibrous
Cleavage
Perfect on {01 1 1}
[110] perfect, [101] good, [010] distinct
Mohs Hardness
3.5-4.53.5-4
2
10
👆🏻
Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references