Anorthite and Proustite Physical Properties

Anorthite

Proustite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.775.51-5.64

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

Perfect [001] good [010] poor [110]

Distinct on {10 1 1}

1.7 Mohs Hardness

6-6.52.5

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Anorthite and Proustite Chemical Formula

While comparing Anorthite and Proustite 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 Anorthite and Proustite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Anorthite and Proustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Proustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Proustite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 5.51-5.64 whereas that of Proustite is 5.51-5.64.