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Hurlbutite
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Chlorite group
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Hurlbutite
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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
-
-
-
2.90
Conchoidal
None
6
CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
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-
-
2.6-3.3
Lamellar
Perfect 001
2-2.5
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6
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