Brookite and Plumbogummite Physical Properties

Brookite

Plumbogummite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.144.014

1 7.18

1.5 Fracture

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

Uneven, Conchoidal

1.6 Cleavage

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

None

1.7 Mohs Hardness

5.5-64-5

2 10

1.8 Chemical Composition

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

Not Available

Brookite and Plumbogummite Chemical Formula

While comparing Brookite and Plumbogummite 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 Plumbogummite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Brookite and Plumbogummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Plumbogummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Plumbogummite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 4.014 whereas that of Plumbogummite is 4.014.