Fayalite and Proustite Physical Properties

Fayalite

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

4.3925.51-5.64

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

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

1.6 Cleavage

{010} moderate, {100} imperfect

Distinct on {10 1 1}

1.7 Mohs Hardness

6.5-72.5

2 10

1.8 Chemical Composition

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Fayalite and Proustite Chemical Formula

While comparing Fayalite 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 Fayalite and Proustite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael 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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Fayalite and Proustite Specific Gravity

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