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Colemanite
Colemanite

Brookite
Brookite



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Colemanite
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Brookite

Colemanite and Brookite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.40-2.423.87-4.14
1 7.18
👆🏻

Fracture

-
Subconchoidal, Conchoidal

Cleavage

{010} Perfect, {001} Distinct
Poor on {120}, in traces on {001}

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
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Colemanite and Brookite Chemical Formula

While comparing Colemanite and Brookite 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 Brookite 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 Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Colemanite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Colemanite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.