Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.07-3.132.08-2.16
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Irregular/uneven
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
distinct/good on {1011}
Mohs Hardness
3-3.54.5
2
10
👆🏻
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)