Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.25-3.352.74-2.76
1
7.18
👆🏻
Fracture
Conchoidal, ConchoidalWalter Schumann
Uneven
Cleavage
Perfect in three directions
{010} Perfect, {001} Distinct
Mohs Hardness
53.5-4
2
10
👆🏻
Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)