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Charlesite
Charlesite

Bustamite
Bustamite



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Charlesite
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Bustamite

Charlesite and Bustamite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

1.793.32-3.43
1 7.18
👆🏻

Fracture

Irregular/uneven
Conchoidal

Cleavage

Perfect on {10bar10}
{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

2.55.5-6
2 10
👆🏻

Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Charlesite and Bustamite Chemical Formula

While comparing Charlesite 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 Charlesite and Bustamite chemical formula.

  • Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Charlesite and Bustamite Specific Gravity

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