Gahnite and Lepidolite Physical Properties

Gahnite

Lepidolite

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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

4.00-4.622.80-2.90

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indistinct parting on [111]

{001} perfect

1.7 Mohs Hardness

7.5-82.5

2 10

1.8 Chemical Composition

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

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

Gahnite and Lepidolite Chemical Formula

While comparing Gahnite and Lepidolite 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 Lepidolite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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Gahnite and Lepidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.