Spodumene and Oligoclase Physical Properties

Spodumene

Oligoclase

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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

3.15-3.212.62-2.67

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Gemstones (2009)

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

1.6 Cleavage

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

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

6-76-6.5

2 10

1.8 Chemical Composition

LiAlSi₂O₆

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

Spodumene and Oligoclase Chemical Formula

While comparing Spodumene and Oligoclase 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 Oligoclase chemical formula.

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

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Spodumene and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.