Bastnasite and Brookite Physical Properties

Bastnasite

Brookite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.95-5.03.87-4.14

1 7.18

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Fracture

Uneven

Subconchoidal, Conchoidal

Cleavage

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

Poor on {120}, in traces on {001}

Mohs Hardness

4-55.5-6

2 10

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Chemical Composition

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

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Bastnasite and Brookite Chemical Formula

While comparing Bastnasite and Brookite 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 Bastnasite and Brookite chemical formula.

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

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Bastnasite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.