Melanite and Pyrargyrite Physical Properties

Melanite

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

3.70-4.105.85

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

6.5-72.5-3

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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

Melanite and Pyrargyrite Chemical Formula

While comparing Melanite 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 Melanite and Pyrargyrite chemical formula.

Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Melanite and Pyrargyrite Specific Gravity

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