Bustamite and Elbaite Physical Properties

Bustamite

Elbaite

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Physical Properties

Tenacity

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

3.32-3.432.90-3.10

1 7.18

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Fracture

Conchoidal

Uneven, Conchoidal

Cleavage

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

Poor/indistinct on {1120} and {1011}

Mohs Hardness

5.5-67

2 10

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Chemical Composition

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

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Bustamite and Elbaite Chemical Formula

While comparing Bustamite and Elbaite 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 Bustamite and Elbaite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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Bustamite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.