Kornerupine and Annabergite Physical Properties

Kornerupine

Annabergite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.453.07

1 7.18

2.5 Fracture

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

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

2.6 Cleavage

Good on {110}

Perfect on {010}, indistinct on {100} and {102}

2.7 Mohs Hardness

6.52

2 10

2.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Ni3(AsO4)2•8(H2O)

Kornerupine and Annabergite Chemical Formula

While comparing Kornerupine and Annabergite 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 Kornerupine and Annabergite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

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Kornerupine and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 3.07 whereas that of Annabergite is 3.07.