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Riebeckite
Riebeckite

Brucite
Brucite



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Riebeckite
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Brucite

Riebeckite and Brucite Physical Properties

Physical Properties

Tenacity

Brittle
Sectile

Solubility

-
-

Durability

-
-

Specific Gravity

3.28-3.442.39
1 7.18
👆🏻

Fracture

Uneven, Splintery
Irregular

Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Perfect on {0001}

Mohs Hardness

5.0-6.02.5
2 10
👆🏻

Chemical Composition

Na2Fe2+3Fe3+2Si8O22(OH)2
Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Brucite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Brucite chemical formula.

  • Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2
  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Brucite Specific Gravity

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