Bastnasite and Legrandite Physical Properties

Bastnasite

Legrandite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.95-5.03.98-4.04

1 7.18

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Fracture

Uneven

Conchoidal

Cleavage

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

Imperfect, poor one {100}

Mohs Hardness

4-54.5-5

2 10

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Chemical Composition

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

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Bastnasite and Legrandite Chemical Formula

While comparing Bastnasite and Legrandite 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 Legrandite chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bastnasite and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.