Pyrrhotite and Fayalite Physical Properties

Pyrrhotite

Fayalite

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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

4.58-4.654.392

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Absent

{010} moderate, {100} imperfect

1.7 Mohs Hardness

3.5-4.56.5-7

2 10

1.8 Chemical Composition

Not Available

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

Pyrrhotite and Fayalite Chemical Formula

While comparing Pyrrhotite and Fayalite 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 Fayalite chemical formula.

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

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Pyrrhotite and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrrhotite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrrhotite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Pyrrhotite is 4.392 whereas that of Fayalite is 4.392.