Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.3922.74-2.76
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{010} moderate, {100} imperfect
{010} Perfect, {001} Distinct
Mohs Hardness
6.5-73.5-4
2
10
👆🏻
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)