Gypsum and Brookite Physical Properties

Gypsum

Brookite

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1 Physical Properties

1.1 Tenacity

Flexible

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.403.87-4.14

1 7.18

1.5 Fracture

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Perfect on {010}, distinct on {100}

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

1.7 Mohs Hardness

25.5-6

2 10

1.8 Chemical Composition

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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

Gypsum and Brookite Chemical Formula

While comparing Gypsum 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 Gypsum and Brookite chemical formula.

Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Gypsum and Brookite Specific Gravity

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