Allanite and Proustite Physical Properties

Allanite

Proustite

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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

3.40-4.205.51-5.64

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Distinct on {10 1 1}

1.7 Mohs Hardness

Not Available2.5

2 10

1.8 Chemical Composition

Not Available

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

Allanite and Proustite Chemical Formula

While comparing Allanite 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 Allanite and Proustite chemical formula.

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

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Allanite and Proustite Specific Gravity

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