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Thulite
Thulite

Bustamite
Bustamite



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Thulite
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Bustamite

Thulite and Bustamite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

3.13.32-3.43
1 7.18
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Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

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

Mohs Hardness

6-75.5-6
2 10
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Chemical Composition

Ca2Al3(SiO4)3(OH)
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , 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 O’Donoghue , Gems, Sixth Edition (2006) More from other references

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.