Sylvite and Fluorite Physical Properties

Sylvite

Fluorite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

1.9933.00-3.25

1 7.18

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Fracture

Uneven

Subconchoidal, Uneven, ConchoidalWalter Schumann

Cleavage

Perfect on [100], [010], [001]

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

Mohs Hardness

2.54

2 10

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Chemical Composition

KCl

CaF₂

Sylvite and Fluorite Chemical Formula

While comparing Sylvite and Fluorite 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 Sylvite and Fluorite chemical formula.

Chemical formula of Sylvite- KCl
Chemical formula of Fluorite- CaF₂

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Sylvite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.