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Mottramite
Mottramite

Zinnwaldite
Zinnwaldite



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Mottramite
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Zinnwaldite

Mottramite and Zinnwaldite Physical Properties

Physical Properties

Tenacity

Brittle
Elastic

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.9-3.1
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Uneven

Cleavage

None observed
Perfect basal {001}

Mohs Hardness

33.5-4.0
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
-

Mottramite and Zinnwaldite Chemical Formula

While comparing Mottramite and Zinnwaldite 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 Zinnwaldite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Zinnwaldite- -

Mottramite and Zinnwaldite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.