Bustamite and Diaspore Physical Properties

Bustamite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Partly soluble in HCl.

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.30-3.40

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

5.5-66.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Bustamite and Diaspore Chemical Formula

While comparing Bustamite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Bustamite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.