Fayalite and Gahnite Physical Properties

Fayalite

Gahnite

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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

4.3924.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

{010} moderate, {100} imperfect

Indistinct parting on [111]

1.7 Mohs Hardness

6.5-77.5-8

2 10

1.8 Chemical Composition

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

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Fayalite and Gahnite Chemical Formula

While comparing Fayalite and Gahnite 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 Fayalite and Gahnite chemical formula.

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

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Fayalite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.