Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.07-3.132.95-3.07
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
Perfect on {110} at 56° and 124°; partings on {010} and {100}
Mohs Hardness
3-3.55-6
2
10
👆🏻
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.