Gahnite and Riebeckite Physical Properties

Gahnite

Riebeckite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.28-3.44

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, Splintery, Brittle

1.6 Cleavage

Indistinct parting on [111]

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

7.5-85.0-6.0

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Gahnite and Riebeckite Chemical Formula

While comparing Gahnite and Riebeckite 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 Gahnite and Riebeckite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Gahnite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.