Fayalite and Bastnasite Physical Properties

Fayalite

Bastnasite

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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

4.3924.95-5.0

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

{010} moderate, {100} imperfect

Imperfect to indistinct on {10 1 0}, parting on {0001}

1.7 Mohs Hardness

6.5-74-5

2 10

1.8 Chemical Composition

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

(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fayalite and Bastnasite Chemical Formula

While comparing Fayalite and Bastnasite 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 Bastnasite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Fayalite and Bastnasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.