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Brucite
Brucite

Bustamite
Bustamite



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Brucite
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Brucite and Bustamite Physical Properties

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Physical Properties

Tenacity

Sectile
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

2.393.32-3.43
1 7.18
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Fracture

Irregular
Conchoidal

Cleavage

Perfect on {0001}
{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

2.55.5-6
2 10
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Chemical Composition

Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Brucite and Bustamite Chemical Formula

While comparing Brucite and Bustamite 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 Bustamite chemical formula.

  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Brucite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.