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Plumbogummite
Plumbogummite

Mottramite
Mottramite



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Plumbogummite
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Mottramite

Plumbogummite and Mottramite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Soluble

Durability

-
-

Specific Gravity

4.0145.9
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Sub-Conchoidal

Cleavage

None
None observed

Mohs Hardness

4-53
2 10
👆🏻

Chemical Composition

PbAl3(PO4)(SO4)(OH)6
PbCu(VO4)(OH)

Plumbogummite and Mottramite Chemical Formula

While comparing Plumbogummite and Mottramite 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 Plumbogummite and Mottramite chemical formula.

  • Chemical formula of Plumbogummite- PbAl3(PO4)(SO4)(OH)6
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Plumbogummite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 5.9 whereas that of Mottramite is 5.9.