Thomsonite and Bastnasite Physical Properties

Thomsonite

Bastnasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.25-2.404.95-5.0

1 7.18

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Fracture

Uneven

Cleavage

perfect on {010}; good on {100}

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

Mohs Hardness

5-5.54-5

2 10

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Chemical Composition

NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Thomsonite and Bastnasite Chemical Formula

While comparing Thomsonite 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 Thomsonite and Bastnasite chemical formula.

Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) 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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Thomsonite and Bastnasite Specific Gravity

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