Tenacity
-
-
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.74-2.763.06-3.25
1
7.18
👆🏻
Fracture
Uneven
Sub-Conchoidal, Conchoidal, Uneven
Cleavage
{010} Perfect, {001} Distinct
Poor/indistinct on {100}
Mohs Hardness
3.5-44.5-5
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)