Marcasite and Moonstone Physical Properties

Marcasite

Moonstone

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.80-4.902.56-2.60

1 7.18

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Fracture

Uneven

Uneven, ConchoidalWalter Schumann

Cleavage

{010} Indistinct

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

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

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Marcasite and Moonstone Chemical Formula

While comparing Marcasite and Moonstone 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 Moonstone chemical formula.

Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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Marcasite and Moonstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.