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Mottramite
Mottramite

Brucite
Brucite



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Mottramite
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Brucite

Mottramite and Brucite Physical Properties

Physical Properties

Tenacity

Brittle
Sectile

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.39
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Irregular

Cleavage

None observed
Perfect on {0001}

Mohs Hardness

32.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Mottramite and Brucite Chemical Formula

While comparing Mottramite and Brucite 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 Brucite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Mottramite and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.39 whereas that of Brucite is 2.39.