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Hackmanite
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Goshenite
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Hackmanite
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
Physical Properties
Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
-
-
-
2.27-2.33
-
Perfect
5.5-6
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
-
-
-
2.60-2.90
Conchoidal
3,1 basal
7.5-8
Be
3
Al
2
SiO
6
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