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Brookite
Brookite

Helenite
Helenite



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Brookite
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Brookite and Helenite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.87-4.14-9999
1 7.18
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Fracture

Subconchoidal, Conchoidal
-

Cleavage

Poor on {120}, in traces on {001}
Indiscernible

Mohs Hardness

5.5-6-9999
2 10
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Chemical Composition

TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
SiO2

Brookite and Helenite Chemical Formula

While comparing Brookite and Helenite 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 Brookite and Helenite chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Helenite- SiO2

Brookite and Helenite Specific Gravity

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