Anorthite and Brookite Physical Properties

Anorthite

Brookite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.773.87-4.14

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

Perfect [001] good [010] poor [110]

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

1.7 Mohs Hardness

6-6.55.5-6

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Anorthite and Brookite Chemical Formula

While comparing Anorthite 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 Anorthite and Brookite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Anorthite and Brookite Specific Gravity

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