Spinel and Fluorite Physical Properties

Spinel

Fluorite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.663.00-3.25

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

CaF₂

Spinel and Fluorite Chemical Formula

While comparing Spinel 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 Spinel and Fluorite chemical formula.

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

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Spinel and Fluorite Specific Gravity

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