Tenacity
-
Flexible
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.74-2.762.20-2.40
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Splintery, Fibrous
Cleavage
{010} Perfect, {001} Distinct
Perfect on {010}, distinct on {100}
Mohs Hardness
3.5-42
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)