Thulite and Bustamite Physical Properties

Thulite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.13.32-3.43

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect {010} imperfect {100}

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

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Thulite and Bustamite Chemical Formula

While comparing Thulite 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 Thulite and Bustamite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Thulite and Bustamite Specific Gravity

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