Tenacity
-
-
Solubility
-
insoluble in water
Durability
-
-
Specific Gravity
3.07-3.132.51-2.63
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Fibrous
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
Perfect basal
Mohs Hardness
3-3.52.5-4.5
2
10
👆🏻
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)