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Mottramite
Mottramite

Wernerite
Wernerite



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Mottramite
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Wernerite

Mottramite and Wernerite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.50-2.80
1 7.18
👆🏻

Fracture

Sub-Conchoidal
-

Cleavage

None observed
Perfect

Mohs Hardness

35-6.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)

Mottramite and Wernerite Chemical Formula

While comparing Mottramite and Wernerite 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 Wernerite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Wernerite- Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)

Mottramite and Wernerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Wernerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Wernerite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.50-2.80 whereas that of Wernerite is 2.50-2.80.