Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.74-2.763.05-3.08
1
7.18
👆🏻
Fracture
Uneven
Uneven, Irregular, Conchoidal
Cleavage
{010} Perfect, {001} Distinct
None
Mohs Hardness
3.5-46.5
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)