Fayalite and Friedelite Physical Properties

Fayalite

Friedelite

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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

4.3923.06-3.19

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

1.6 Cleavage

{010} moderate, {100} imperfect

{010} Perfect

1.7 Mohs Hardness

6.5-74-5

2 10

1.8 Chemical Composition

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

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Fayalite and Friedelite Chemical Formula

While comparing Fayalite and Friedelite 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 Friedelite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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Fayalite and Friedelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.