Pyrrhotite and Forsterite Physical Properties

Pyrrhotite

Forsterite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.58-4.653.23-3.26

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Absent

Perfect on {010} imperfect on {100}

1.7 Mohs Hardness

3.5-4.56.5-7

2 10

1.8 Chemical Composition

Not Available

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

Pyrrhotite and Forsterite Chemical Formula

While comparing Pyrrhotite and Forsterite 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 Pyrrhotite and Forsterite chemical formula.

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

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Pyrrhotite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrrhotite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrrhotite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Pyrrhotite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.