Proustite and Allanite Physical Properties

Proustite

Allanite

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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

5.51-5.643.40-4.20

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Distinct on {10 1 1}

Not Available

1.7 Mohs Hardness

2.5Not Available

2 10

1.8 Chemical Composition

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

Not Available

Proustite and Allanite Chemical Formula

While comparing Proustite and Allanite 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 Allanite chemical formula.

Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Proustite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Proustite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Proustite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Proustite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.