Kyanite and Steatite Physical Properties

Kyanite

Steatite

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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

3.53-3.652.20-2.80

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-7Not Available

2 10

1.8 Chemical Composition

Not Available

Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

Kyanite and Steatite Chemical Formula

While comparing Kyanite and Steatite 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 Steatite chemical formula.

Chemical formula of Steatite- Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

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Kyanite and Steatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Steatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Steatite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.20-2.80 whereas that of Steatite is 2.20-2.80.