Brookite and Realgar Physical Properties

Brookite

Realgar

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.143.56

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

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

{010} Good

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

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

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Brookite and Realgar Chemical Formula

While comparing Brookite and Realgar 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 Realgar chemical formula.

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

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Brookite and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.56 whereas that of Realgar is 3.56.