Kyanite and Augite Physical Properties

Kyanite

Augite

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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

3.53-3.653.19-3.56

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

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

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

4-75.5-6

2 10

1.8 Chemical Composition

Not Available

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Kyanite and Augite Chemical Formula

While comparing Kyanite and Augite 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 Augite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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Kyanite and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Augite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.19-3.56 whereas that of Augite is 3.19-3.56.