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Mottramite
Mottramite

Nepheline
Nepheline



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Mottramite
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Nepheline

Mottramite and Nepheline Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.55-2.65
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Subconchoidal, Conchoidal

Cleavage

None observed
[1010] Poor

Mohs Hardness

35-6
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Mottramite and Nepheline Chemical Formula

While comparing Mottramite and Nepheline 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 Nepheline chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Mottramite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.