Kyanite and Mottramite Physical Properties

Kyanite

Mottramite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.655.9

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Sub-Conchoidal, Brittle, Metallic

1.6 Cleavage

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

None observed

1.7 Mohs Hardness

4-73

2 10

1.8 Chemical Composition

Not Available

Kyanite and Mottramite Chemical Formula

While comparing Kyanite and Mottramite 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 Mottramite chemical formula.

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Kyanite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 5.9 whereas that of Mottramite is 5.9.