Dumortierite and Pyrargyrite Physical Properties

Dumortierite

Pyrargyrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.415.85

1 7.18

1.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

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

1.7 Mohs Hardness

7-8.52.5-3

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Pyrargyrite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Pyrargyrite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Pyrargyrite Specific Gravity

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