Bustamite and Pyrargyrite Physical Properties

Bustamite

Pyrargyrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.435.85

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

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

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

5.5-62.5-3

2 10

1.8 Chemical Composition

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

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Bustamite and Pyrargyrite Chemical Formula

While comparing Bustamite and Pyrargyrite 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 Pyrargyrite chemical formula.

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

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Bustamite and Pyrargyrite Specific Gravity

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