Bustamite and Calcite Physical Properties

Bustamite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partly soluble in HCl.

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.432.67-2.73

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Bustamite and Calcite Chemical Formula

While comparing Bustamite and Calcite 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 Calcite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Bustamite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.