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Cymophane
Cymophane

Beudantite
Beudantite



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Cymophane
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Beudantite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.69-3.81
-
Perfect
8.5
BeAl 2O 4Arthur Thomas , Gemstones (2009)
 
-
-
-
4.48
-
distinct; good on {0001}
3.5-4.5
PbFe+++3(AsO4)(SO4)(OH)6