Zincite and Andradite Physical Properties

Zincite

Andradite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.50-5.903.70-4.10

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

On {10 1 0}, perfect; parting on {000 1 }

none

1.7 Mohs Hardness

46.5-7

2 10

1.8 Chemical Composition

(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Zincite and Andradite Chemical Formula

While comparing Zincite and Andradite 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 Zincite and Andradite chemical formula.

Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Zincite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zincite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zincite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Zincite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.