Calcite and Kyanite Physical Properties

Calcite

Kyanite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.733.53-3.65

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Splintery, Brittle, Metallic

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

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

1.7 Mohs Hardness

34-7

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Not Available

Calcite and Kyanite Chemical Formula

While comparing Calcite and Kyanite 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 Calcite and Kyanite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Calcite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.