Forsterite and Pyrite Marcasite Physical Properties

Forsterite

Pyrite 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

3.23-3.264.9-5.2

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

Perfect on {010} imperfect on {100}

None

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Forsterite and Pyrite Marcasite Chemical Formula

While comparing Forsterite and Pyrite 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 Forsterite and Pyrite Marcasite chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Forsterite and Pyrite Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Pyrite Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Pyrite Marcasite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 4.9-5.2 whereas that of Pyrite Marcasite is 4.9-5.2.