Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.80-4.153.85-3.94
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
perfect along [010] and [100]
{010} Good, {100} Distinct
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)