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Mottramite
Mottramite

Dumortierite
Dumortierite



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Mottramite
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Dumortierite

Mottramite and Dumortierite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.93.26-3.41
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Fibrous, ConchoidalWalter Schumann

Cleavage

None observed
Distinct on {100}, poor on {110}; parting on {001}

Mohs Hardness

37-8.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
AlAl6O3BSi3O18

Mottramite and Dumortierite Chemical Formula

While comparing Mottramite and Dumortierite 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 Dumortierite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Dumortierite- AlAl6O3BSi3O18

Mottramite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.