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Spodumene
Spodumene

Opal
Opal



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Spodumene
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Opal

Spodumene and Opal Physical Properties

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Physical Properties

Tenacity

Brittle
BrittleWalter Schumann

Solubility

insoluble
hot salt water

Durability

-
-

Specific Gravity

3.15-3.211.98-2.25
1 7.18
👆🏻

Fracture

Uneven, Subconchoidal
Conchoidal

Cleavage

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
None

Mohs Hardness

6-75-6.5
2 10
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Chemical Composition

LiAlSi2O6
SiO2 · nH2O

Spodumene and Opal Chemical Formula

While comparing Spodumene and Opal 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 Opal chemical formula.

  • Chemical formula of Spodumene- LiAlSi2O6
  • Chemical formula of Opal- SiO2 · nH2O

Spodumene and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Opal Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 1.98-2.25 whereas that of Opal is 1.98-2.25.