Erythrite and Gahnospinel Physical Properties

Erythrite

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

3.063.65-4.55

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

None, but may exhibit slight parting

1.7 Mohs Hardness

Not Available7.5-8

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Gahnospinel Chemical Formula

While comparing Erythrite 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 Erythrite and Gahnospinel chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Erythrite and Gahnospinel Specific Gravity

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