Bustamite and Cuprite Physical Properties

Bustamite

Cuprite

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Physical Properties

Tenacity

Brittle

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

3.32-3.435.85-6.15

1 7.18

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Fracture

Conchoidal

Cleavage

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

Fair in four directions forming octahedrons

Mohs Hardness

5.5-63.5-4

2 10

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Chemical Composition

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

Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Bustamite and Cuprite Chemical Formula

While comparing Bustamite and Cuprite 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 Cuprite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bustamite and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.