Marcasite and Diaspore Physical Properties

Marcasite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.80-4.903.30-3.40

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

{010} Indistinct

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

6-6.56.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Marcasite and Diaspore Chemical Formula

While comparing Marcasite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Marcasite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.