Brookite and Phlogopite Physical Properties

Brookite

Phlogopite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.14

2.78-2.85

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

None, Uneven

1.6 Cleavage

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

Perfect basal (001)

1.7 Mohs Hardness

5.5-6

2-2.5

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

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 OâDonoghue , Gems, Sixth Edition (2006) More from other references

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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.