Proustite and Apatite Physical Properties

Proustite

Apatite

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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

5.51-5.643.16-3.23

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

Distinct on {10 1 1}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

2.55

2 10

1.8 Chemical Composition

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

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Proustite and Apatite Chemical Formula

While comparing Proustite and Apatite 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 Apatite chemical formula.

Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Black Gemstones

Proustite Vs Serendibite

Proustite Vs Sheen Obsidian

Proustite Vs Schorlomite

Proustite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Proustite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Proustite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Proustite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.