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Chrome-Chalcedony
Chrome-Chalcedony
☒

Kutnohorite
Kutnohorite
☒



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Chrome-Chalcedony
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Kutnohorite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
 
Brittle
Soluble
-
3.12
Subconchoidal, Conchoidal
Perfect on {10 1 1}
3-4
Ca(Mn,Mg,Fe)(CO3)2