Hematite and Gypsum Physical Properties

Hematite

Gypsum

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.302.20-2.40

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

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

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Gypsum Chemical Formula

While comparing Hematite and Gypsum 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 Hematite and Gypsum chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Hematite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.