Anorthite and Fluorite Physical Properties

Anorthite

Fluorite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.773.00-3.25

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

Perfect [001] good [010] poor [110]

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

1.7 Mohs Hardness

6-6.54

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

CaF₂

Anorthite and Fluorite Chemical Formula

While comparing Anorthite 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 Anorthite and Fluorite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Fluorite- CaF₂

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Anorthite and Fluorite Specific Gravity

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