Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.082.74-2.76
1
7.18
👆🏻
Fracture
Uneven, Irregular, Conchoidal
Uneven
Cleavage
None
{010} Perfect, {001} Distinct
Mohs Hardness
6.53.5-4
2
10
👆🏻
Chemical Composition
Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)