Andradite and Zincite Physical Properties

Andradite

Zincite

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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

3.70-4.105.50-5.90

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

none

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

1.7 Mohs Hardness

6.5-74

2 10

1.8 Chemical Composition

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

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

Andradite and Zincite Chemical Formula

While comparing Andradite and Zincite 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 Andradite and Zincite chemical formula.

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

Compare Green Gemstones

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Andradite Vs Aragonite

Andradite Vs Astrophyllite

Andradite and Zincite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Zincite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 5.50-5.90 whereas that of Zincite is 5.50-5.90.