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Legrandite and Cinnabar Physical Properties


Cinnabar and Legrandite Physical Properties


Physical Properties

Tenacity
Brittle   
Slightly sectile   

Solubility
Not Available   
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)   

Durability
Not Available   
Not Available   

Specific Gravity
3.98-4.04   
2   

Fracture
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle   
Uneven, Uneven, Gemstones (2009), Brittle   

Cleavage
Imperfect, poor one {100}   
Prismatic {10 1 0}, perfect   

Mohs Hardness
4.5-5   
2-2.5   

Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Legrandite and Cinnabar Chemical Formula

While comparing Legrandite 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 Legrandite and Cinnabar chemical formula.

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Legrandite and Cinnabar Specific Gravity

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

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