Marcasite and Sylvite Physical Properties

Marcasite

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.80-4.901.993

1 7.18

1.5 Fracture

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

Uneven, Brittle

1.6 Cleavage

{010} Indistinct

Perfect on [100], [010], [001]

1.7 Mohs Hardness

6-6.52.5

2 10

1.8 Chemical Composition

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

Not Available

Marcasite and Sylvite Chemical Formula

While comparing Marcasite and Sylvite 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 Marcasite and Sylvite chemical formula.

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

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Marcasite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 1.993 whereas that of Sylvite is 1.993.