Bustamite and Barite Physical Properties

Bustamite

Barite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.434.48

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

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

{010} Perfect, {210} Perfect, {010} Imperfect

1.7 Mohs Hardness

5.5-63-3.5

2 10

1.8 Chemical Composition

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

BaSO4

Bustamite and Barite Chemical Formula

While comparing Bustamite and Barite 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 Barite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Barite- BaSO4

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Bustamite and Barite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Barite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Barite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 4.48 whereas that of Barite is 4.48.