Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.48-3.603.07-3.13
1
7.18
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Fracture
Sub-Conchoidal, Conchoidal
Conchoidal, Uneven
Cleavage
Distinct on [110], parting on {221}
{100} Perfect, {010} Distinct, {102} Distinct
Mohs Hardness
5-5.53-3.5
2
10
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Chemical Composition
CaTiSiO5
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references