Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.74-2.765.35
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{010} Perfect, {001} Distinct
Perfect on {100}, imperfect on {001}
Mohs Hardness
3.5-42.5
2
10
👆🏻
Chemical Composition
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)