Shigaite and Gahnospinel Physical Properties

Shigaite

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.323.65-4.55

1 7.18

1.5 Fracture

Flexible Flexible fragments.

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {0001}

None, but may exhibit slight parting

1.7 Mohs Hardness

27.5-8

2 10

1.8 Chemical Composition

Not Available

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

Shigaite and Gahnospinel Chemical Formula

While comparing Shigaite 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 Shigaite and Gahnospinel chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Shigaite and Gahnospinel Specific Gravity

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