Proustite and Pargasite Physical Properties

Proustite

Pargasite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.51-5.643.04-3.26

1 7.18

1.5 Fracture

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

Splintery, Brittle, Uneven

1.6 Cleavage

Distinct on {10 1 1}

{110} perfect

1.7 Mohs Hardness

2.55-6

2 10

1.8 Chemical Composition

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

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Proustite and Pargasite Chemical Formula

While comparing Proustite and Pargasite 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 Proustite and Pargasite chemical formula.

Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Black Gemstones

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Proustite Vs Sheen Obsidian

Proustite Vs Serendibite

Proustite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Proustite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Proustite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Proustite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.