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Mottramite
Mottramite

Afghanite
Afghanite



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Mottramite
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Afghanite

Mottramite and Afghanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
5.9
Sub-Conchoidal
None observed
3
PbCu(VO4)(OH)
 
-
-
-
2.55-2.65
Conchoidal
Perfect {10 1 0}
5.5-6
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Mottramite and Afghanite Chemical Formula

While comparing Mottramite and Afghanite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Mottramite and Afghanite chemical formula.

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Mottramite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite Vs Afghanite during the identification of gemstone. Specific gravity of Mottramite is whereas that of Afghanite is .