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Colemanite
Colemanite

Bustamite
Bustamite



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Colemanite
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Bustamite

Colemanite and Bustamite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

2.40-2.423.32-3.43
1 7.18
👆🏻

Fracture

-
Conchoidal

Cleavage

{010} Perfect, {001} Distinct
{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

4.55.5-6
2 10
👆🏻

Chemical Composition

Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Colemanite and Bustamite Chemical Formula

While comparing Colemanite 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 Colemanite and Bustamite chemical formula.

  • Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Colemanite and Bustamite Specific Gravity

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