Iolite and Marcasite Physical Properties

Iolite

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

2.6-2.74.80-4.90

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

3,1

{010} Indistinct

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Marcasite Chemical Formula

While comparing Iolite 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 Iolite and Marcasite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Marcasite Specific Gravity

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