Thomsonite and Bustamite Physical Properties

Thomsonite

Bustamite

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Physical Properties

Tenacity

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

2.25-2.403.32-3.43

1 7.18

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Fracture

Conchoidal

Cleavage

perfect on {010}; good on {100}

{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

5-5.55.5-6

2 10

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Chemical Composition

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

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Thomsonite and Bustamite Chemical Formula

While comparing Thomsonite and Bustamite 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 Bustamite 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 Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Thomsonite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.