Oligoclase and Spodumene Physical Properties

Oligoclase

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.673.15-3.21

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

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

1.7 Mohs Hardness

6-6.56-7

2 10

1.8 Chemical Composition

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

LiAlSi₂O₆

Oligoclase and Spodumene Chemical Formula

While comparing Oligoclase and Spodumene 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 Oligoclase and Spodumene chemical formula.

Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Spodumene- LiAlSi₂O₆

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Oligoclase and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.