Peridot and Marcasite Physical Properties

Peridot

Marcasite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.554.80-4.90

1 7.18

1.5 Fracture

Conchoidal

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

Poor

{010} Indistinct

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

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

Peridot and Marcasite Chemical Formula

While comparing Peridot and Marcasite 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 Peridot and Marcasite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Peridot and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Peridot is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.