Montebrasite and Bastnasite Physical Properties

Montebrasite

Bastnasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.98-3.104.95-5.0

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

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

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

Mohs Hardness

5.5-64-5

2 10

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Chemical Composition

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

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

Montebrasite and Bastnasite Chemical Formula

While comparing Montebrasite 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 Montebrasite and Bastnasite chemical formula.

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

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Montebrasite and Bastnasite Specific Gravity

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