Spodumene and Gahnite Physical Properties

Spodumene

Gahnite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.214.00-4.62

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Gemstones (2009)

Conchoidal, Uneven

1.6 Cleavage

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

Indistinct parting on [111]

1.7 Mohs Hardness

6-77.5-8

2 10

1.4 Chemical Composition

LiAlSi₂O₆

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

Spodumene and Gahnite Chemical Formula

While comparing Spodumene and Gahnite 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 Spodumene and Gahnite chemical formula.

Chemical formula of Spodumene- LiAlSi₂O₆
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Spodumene and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.