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Charlesite
Charlesite

Colemanite
Colemanite



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Charlesite
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Colemanite

Charlesite and Colemanite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

1.792.40-2.42
1 7.18
👆🏻

Fracture

Irregular/uneven
-

Cleavage

Perfect on {10bar10}
{010} Perfect, {001} Distinct

Mohs Hardness

2.54.5
2 10
👆🏻

Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Charlesite and Colemanite Chemical Formula

While comparing Charlesite and Colemanite 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 Colemanite chemical formula.

  • Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
  • Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Charlesite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.