Fayalite and Poldervaartite Physical Properties

Fayalite

Poldervaartite

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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

4.3922.91

1 7.18

1.5 Fracture

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

Handbook of mineralogy (2001)

1.6 Cleavage

{010} moderate, {100} imperfect

None

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

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

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Fayalite and Poldervaartite Chemical Formula

While comparing Fayalite and Poldervaartite 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 Poldervaartite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

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Fayalite and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 2.91 whereas that of Poldervaartite is 2.91.