Aragonite and Brookite Physical Properties

Aragonite

Brookite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Dilute acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.963.87-4.14

1 7.18

1.5 Fracture

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

3.5-45.5-6

2 10

1.8 Chemical Composition

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

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

Aragonite and Brookite Chemical Formula

While comparing Aragonite and Brookite 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 Aragonite and Brookite chemical formula.

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

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Aragonite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.