Adamite and Kyanite Physical Properties

Adamite

Kyanite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

3.53-3.65

1.5 Fracture

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

Splintery, Brittle, Metallic

1.6 Cleavage

{101}, good; {010}, poor

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

1.7 Mohs Hardness

3.5

4-7

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

Not Available

Adamite and Kyanite Chemical Formula

While comparing Adamite 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 Adamite and Kyanite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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Adamite and Kyanite Specific Gravity

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