Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.07-3.133.80-4.15
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
perfect along [010] and [100]
Mohs Hardness
3-3.53.5-4
2
10
👆🏻
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references