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Brookite
Brookite

Phlogopite
Phlogopite



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Brookite
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Phlogopite

Brookite and Phlogopite Physical Properties

Physical Properties

Tenacity

Brittle
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

3.87-4.142.78-2.85
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Uneven

Cleavage

Poor on {120}, in traces on {001}
Perfect basal (001)

Mohs Hardness

5.5-62-2.5
2 10
👆🏻

Chemical Composition

TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
KMg3(Si3Al)O10(F,OH)2

Brookite and Phlogopite Chemical Formula

While comparing Brookite and Phlogopite 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 Phlogopite chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2

Brookite and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.