Brookite and Aragonite Physical Properties

Brookite

Aragonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.142.93-2.96

1 7.18

1.5 Fracture

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

1.6 Cleavage

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

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

5.5-63.5-4

2 10

1.8 Chemical Composition

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

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Brookite and Aragonite Chemical Formula

While comparing Brookite and Aragonite 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 Aragonite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Brookite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.