Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.23-3.262.25-2.40
1
7.18
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Fracture
Conchoidal
-
Cleavage
Perfect on {010} imperfect on {100}
perfect on {010}; good on {100}
Mohs Hardness
6.5-75-5.5
2
10
👆🏻
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references