Anorthite and Cinnabar Physical Properties

Anorthite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

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

Durability

Specific Gravity

2.772

1 7.18

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Fracture

Uneven

Cleavage

Perfect [001] good [010] poor [110]

Prismatic {10 1 0}, perfect

Mohs Hardness

6-6.52-2.5

2 10

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Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Anorthite and Cinnabar Chemical Formula

While comparing Anorthite and Cinnabar 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 Anorthite and Cinnabar chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Anorthite and Cinnabar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2 whereas that of Cinnabar is 2.