Fluorite and Gypsum Physical Properties

Fluorite

Gypsum

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.252.20-2.40

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Octahedral, perfect on {111}, parting on {011}

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

CaF₂

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

Fluorite and Gypsum Chemical Formula

While comparing Fluorite 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 Fluorite and Gypsum chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Fluorite and Gypsum Specific Gravity

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