Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.70-3.902.74-2.76
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Perfect on {011}, fair on {100}, poor on {110}
{010} Perfect, {001} Distinct
Mohs Hardness
3.5-43.5-4
2
10
👆🏻
Chemical Composition
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)