Afghanite and Axinite Physical Properties

Afghanite

Axinite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.55-2.653.26-3.36

1 7.18

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Fracture

Conchoidal

Cleavage

Perfect {10 1 0}

Good on {100}

Mohs Hardness

5.5-66.5-7

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)

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Afghanite and Axinite Chemical Formula

While comparing Afghanite and Axinite 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 Axinite 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 Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Afghanite and Axinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Axinite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.26-3.36 whereas that of Axinite is 3.26-3.36.