Fayalite and Dumortierite Physical Properties

Fayalite

Dumortierite

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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

4.3923.26-3.41

1 7.18

1.5 Fracture

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

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

{010} moderate, {100} imperfect

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

6.5-77-8.5

2 10

1.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Fayalite and Dumortierite Chemical Formula

While comparing Fayalite and Dumortierite 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 Dumortierite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Fayalite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.