Brookite and Muscovite Physical Properties

Brookite

Muscovite

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1 Physical Properties

1.1 Tenacity

Brittle

Elastic

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.142.78-2.88

1 7.18

1.5 Fracture

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

Micaceous, Brittle

1.6 Cleavage

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

Perfect on the {001}

1.7 Mohs Hardness

5.5-62-3

2 10

1.8 Chemical Composition

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

KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Brookite and Muscovite Chemical Formula

While comparing Brookite and Muscovite 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 Muscovite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Muscovite- KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

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Brookite and Muscovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Muscovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Muscovite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.78-2.88 whereas that of Muscovite is 2.78-2.88.