Hackmanite and Gahnospinel Physical Properties

Hackmanite

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.27-2.33

3.65-4.55

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

None, but may exhibit slight parting

1.7 Mohs Hardness

5.5-6

7.5-8

1.8 Chemical Composition

Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Hackmanite and Gahnospinel Chemical Formula

While comparing Hackmanite 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 Hackmanite and Gahnospinel chemical formula.

Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Hackmanite and Gahnospinel Specific Gravity

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