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Mottramite
Mottramite

Poudretteite
Poudretteite



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Mottramite
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Poudretteite

Mottramite and Poudretteite 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)
 
Brittle
-
-
2.51-2.53
Conchoidal, Splintery
None
5
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Mottramite and Poudretteite Chemical Formula

While comparing Mottramite and Poudretteite 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 Poudretteite chemical formula.

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Mottramite and Poudretteite Specific Gravity

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