Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.89-4.182.74-2.76
1
7.18
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Fracture
Conchoidal, Uneven
Uneven
Cleavage
{0001}, {11 2 0} imperfect
{010} Perfect, {001} Distinct
Mohs Hardness
5.53.5-4
2
10
👆🏻
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)