Bastnasite and Montebrasite Physical Properties

Bastnasite

Montebrasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.95-5.02.98-3.10

1 7.18

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Fracture

Uneven

Uneven, Conchoidal

Cleavage

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

{100} Perfect, {110} Good, {011} Distinct

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

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

Bastnasite and Montebrasite Chemical Formula

While comparing Bastnasite and Montebrasite 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 Montebrasite chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

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Bastnasite and Montebrasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Montebrasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Montebrasite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 2.98-3.10 whereas that of Montebrasite is 2.98-3.10.