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Beryllonite
Beryllonite

Mottramite
Mottramite



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Beryllonite
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Mottramite

Beryllonite and Mottramite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.79-2.875.9
1 7.18
👆🏻

Fracture

Conchoidal
Sub-Conchoidal

Cleavage

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

Mohs Hardness

5.5-63
2 10
👆🏻

Chemical Composition

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

Beryllonite and Mottramite Chemical Formula

While comparing Beryllonite and Mottramite 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 Beryllonite and Mottramite chemical formula.

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

Beryllonite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 5.9 whereas that of Mottramite is 5.9.