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Mottramite
Mottramite

Cordierite
Cordierite



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Mottramite
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Cordierite

Mottramite and Cordierite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.57-2.66
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Subconchoidal, Conchoidal

Cleavage

None observed
Fair on {100}, poor on {001} and {010}

Mohs Hardness

37-7.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Mg2Al4Si5O18

Mottramite and Cordierite Chemical Formula

While comparing Mottramite and Cordierite 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 Cordierite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Mottramite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.