Scapolite and Pyrite Physical Properties

Scapolite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

2.58-2.745.00-5.20

1 7.18

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Fracture

ConchoidalWalter Schumann, Splintery

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

{100} Distinct, {110} Distinct

Indistinct on {001}; partings on {011} and {111}

Mohs Hardness

5.5-66-6.5

2 10

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Chemical Composition

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Scapolite and Pyrite Chemical Formula

While comparing Scapolite and Pyrite 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 Scapolite and Pyrite chemical formula.

Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Scapolite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Scapolite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Scapolite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Scapolite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.