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Mottramite
Mottramite

Beryllonite
Beryllonite



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Mottramite
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Beryllonite

Mottramite and Beryllonite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.79-2.87
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Conchoidal

Cleavage

None observed
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces

Mohs Hardness

35.5-6
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
NaBePO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Beryllonite Chemical Formula

While comparing Mottramite and Beryllonite 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 Beryllonite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Beryllonite- NaBePO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Beryllonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.