Muscovite and Brookite Physical Properties

Muscovite

Brookite

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1 Physical Properties

1.1 Tenacity

Elastic

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.883.87-4.14

1 7.18

1.5 Fracture

Micaceous, Brittle

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

1.6 Cleavage

Perfect on the {001}

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

1.7 Mohs Hardness

2-35.5-6

2 10

1.8 Chemical Composition

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

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

Muscovite and Brookite Chemical Formula

While comparing Muscovite 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 Muscovite and Brookite chemical formula.

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

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Muscovite and Brookite Specific Gravity

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