Cinnabar and Spodumene Physical Properties

Cinnabar

Spodumene

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Brittle

1.2 Solubility

1.04 x 10⁻²⁵ g per 100 ml water (Ksp at 25°C = 2 x 10⁻³²)

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

23.15-3.21

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

Prismatic {10 1 0}, perfect

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

1.7 Mohs Hardness

2-2.56-7

2 10

1.8 Chemical Composition

HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

LiAlSi₂O₆

Cinnabar and Spodumene Chemical Formula

While comparing Cinnabar 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 Cinnabar and Spodumene chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Spodumene- LiAlSi₂O₆

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Cinnabar and Spodumene Specific Gravity

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