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Spodumene
Spodumene

Pollucite
Pollucite



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Spodumene
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Pollucite

Spodumene and Pollucite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

insoluble
Readily soluble in HF

Durability

-
-

Specific Gravity

3.15-3.212.86-2.94
1 7.18
👆🏻

Fracture

Uneven, Subconchoidal
Conchoidal, Uneven

Cleavage

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

Mohs Hardness

6-76.5-7
2 10
👆🏻

Chemical Composition

LiAlSi2O6
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Spodumene and Pollucite Chemical Formula

While comparing Spodumene and Pollucite 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 Pollucite chemical formula.

  • Chemical formula of Spodumene- LiAlSi2O6
  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Spodumene and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.