Sugilite and Spodumene Physical Properties

Sugilite

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.793.15-3.21

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

Poor on {0001}

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

1.7 Mohs Hardness

5.5-6.56-7

2 10

1.8 Chemical Composition

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

LiAlSi₂O₆

Sugilite and Spodumene Chemical Formula

While comparing Sugilite and Spodumene 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 Sugilite and Spodumene chemical formula.

Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Spodumene- LiAlSi₂O₆

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Sugilite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sugilite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.