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Brucite
Brucite

Anorthite
Anorthite



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Brucite
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Anorthite

Brucite and Anorthite Physical Properties

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Physical Properties

Tenacity

Sectile
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.392.77
1 7.18
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Fracture

Irregular
Uneven

Cleavage

Perfect on {0001}
Perfect [001] good [010] poor [110]

Mohs Hardness

2.56-6.5
2 10
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Chemical Composition

Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Brucite and Anorthite Chemical Formula

While comparing Brucite and Anorthite 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 Brucite and Anorthite chemical formula.

  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Anorthite- CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Brucite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 2.77 whereas that of Anorthite is 2.77.