Sylvite and Marcasite Physical Properties

Sylvite

Marcasite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9934.80-4.90

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

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

{010} Indistinct

1.7 Mohs Hardness

2.56-6.5

2 10

1.8 Chemical Composition

Not Available

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

Sylvite and Marcasite Chemical Formula

While comparing Sylvite 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 Sylvite and Marcasite chemical formula.

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

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Sylvite and Marcasite Specific Gravity

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