Gahnite and Fluorite Physical Properties

Gahnite

Fluorite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.00-3.25

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

Indistinct parting on [111]

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

1.7 Mohs Hardness

7.5-84

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

CaF₂

Gahnite and Fluorite Chemical Formula

While comparing Gahnite 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 Gahnite and Fluorite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Fluorite- CaF₂

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Gahnite and Fluorite Specific Gravity

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