Gibbsite and Gahnospinel Physical Properties

Gibbsite

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

2.353.65-4.55

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Perfect

None, but may exhibit slight parting

1.7 Mohs Hardness

2.5-37.5-8

2 10

1.8 Chemical Composition

Al(OH)3

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

Gibbsite and Gahnospinel Chemical Formula

While comparing Gibbsite 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 Gibbsite and Gahnospinel chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Gibbsite and Gahnospinel Specific Gravity

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