Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.07-3.133.28-3.44
1
7.18
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Fracture
Conchoidal, Uneven
Uneven, Splintery
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Mohs Hardness
3-3.55.0-6.0
2
10
👆🏻
Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na2Fe2+3Fe3+2Si8O22(OH)2