Annabergite and Gahnospinel Physical Properties

Annabergite

Gahnospinel

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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

3.073.65-4.55

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

27.5-8

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Annabergite and Gahnospinel Chemical Formula

While comparing Annabergite and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Annabergite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.