Gahnospinel and Annabergite Physical Properties

Gahnospinel

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

3.65-4.553.07

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

7.5-82

2 10

1.8 Chemical Composition

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

Ni3(AsO4)2•8(H2O)

Gahnospinel and Annabergite Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Annabergite chemical formula.

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

Compare Blue Gemstones

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Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel Vs Jeremejevite

Gahnospinel and Annabergite Specific Gravity

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