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Spodumene
Spodumene

Forsterite
Forsterite



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Spodumene
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Forsterite

Spodumene and Forsterite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

insoluble
-

Durability

-
-

Specific Gravity

3.15-3.213.23-3.26
1 7.18
👆🏻

Fracture

Uneven, Subconchoidal
Conchoidal

Cleavage

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
Perfect on {010} imperfect on {100}

Mohs Hardness

6-76.5-7
2 10
👆🏻

Chemical Composition

LiAlSi2O6
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Spodumene and Forsterite Chemical Formula

While comparing Spodumene and Forsterite 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 Forsterite chemical formula.

  • Chemical formula of Spodumene- LiAlSi2O6
  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Spodumene and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.