Gahnite and Elbaite Physical Properties

Gahnite

Elbaite

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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

4.00-4.622.90-3.10

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Indistinct parting on [111]

Poor/indistinct on {1120} and {1011}

1.7 Mohs Hardness

7.5-87

2 10

1.8 Chemical Composition

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

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Gahnite and Elbaite Chemical Formula

While comparing Gahnite and Elbaite 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 Elbaite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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Gahnite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.