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Spodumene and Ettringite Physical Properties


Ettringite and Spodumene Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
insoluble   
Partially soluble in water   

Durability
Not Available   
Not Available   

Specific Gravity
3.15-3.21   
1.77   

Fracture
Uneven, Subconchoidal, Gemstones (2009)   
Not Available   

Cleavage
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°   
Perfect on {10 1 0}   

Mohs Hardness
6-7   
2-2.5   

Chemical Composition
LiAlSi2O6   
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Spodumene and Ettringite Chemical Formula

While comparing Spodumene and Ettringite 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 Ettringite chemical formula.

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Spodumene and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spodumene and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 1.77 whereas that of Ettringite is 1.77.

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Green Gemstones


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