Kyanite and Axinite Physical Properties

Kyanite

Axinite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.653.26-3.36

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Good on {100}

1.7 Mohs Hardness

4-76.5-7

2 10

1.8 Chemical Composition

Not Available

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

Kyanite and Axinite Chemical Formula

While comparing Kyanite 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 Kyanite and Axinite chemical formula.

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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Kyanite and Axinite Specific Gravity

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