Cinnabar and Andalusite Physical Properties

Cinnabar

Andalusite

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2 Physical Properties

2.2 Tenacity

Slightly sectile

Not Available

2.4 Solubility

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

Not Available

2.6 Durability

Not Available

2.8 Specific Gravity

23.05-3.21

1 7.18

2.9 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

2.11 Cleavage

Prismatic {10 1 0}, perfect

Good on {110}, poor on {100}

2.13 Mohs Hardness

2-2.57.5

2 10

2.16 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Cinnabar and Andalusite Chemical Formula

While comparing Cinnabar and Andalusite 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 Andalusite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Cinnabar and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.