Afghanite and Fluorite Physical Properties

Afghanite

Fluorite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

2.55-2.653.00-3.25

1 7.18

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Fracture

Conchoidal

Subconchoidal, Uneven, ConchoidalWalter Schumann

Cleavage

Perfect {10 1 0}

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

Mohs Hardness

5.5-64

2 10

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Chemical Composition

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

CaF₂

Afghanite and Fluorite Chemical Formula

While comparing Afghanite 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 Afghanite and Fluorite chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Fluorite- CaF₂

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Afghanite and Fluorite Specific Gravity

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