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Pleonast
Pleonast

Bustamite
Bustamite



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Pleonast
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Bustamite

Pleonast and Bustamite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

-99993.32-3.43
1 7.18
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Fracture

-
Conchoidal

Cleavage

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

Mohs Hardness

-99995.5-6
2 10
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Chemical Composition

MgAl2O4
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pleonast and Bustamite Chemical Formula

While comparing Pleonast 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 Pleonast and Bustamite chemical formula.

  • Chemical formula of Pleonast- MgAl2O4
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pleonast and Bustamite Specific Gravity

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