Annabergite and Kornerupine Physical Properties

Annabergite

Kornerupine

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.073.25-3.45

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

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

Good on {110}

1.7 Mohs Hardness

26.5

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

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

Annabergite and Kornerupine Chemical Formula

While comparing Annabergite and Kornerupine 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 Annabergite and Kornerupine chemical formula.

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

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Annabergite and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.