Fluorite and Spinel Physical Properties

Fluorite

Spinel

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.253.64-3.66

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

CaF₂

MgAl₂O₄

Fluorite and Spinel Chemical Formula

While comparing Fluorite and Spinel 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 Spinel chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Spinel- MgAl₂O₄

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Fluorite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.