Weloganite and Andradite Physical Properties

Weloganite

Andradite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.223.70-4.10

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Perfect on pseudo {0001}

none

1.7 Mohs Hardness

36.5-7

2 10

1.8 Chemical Composition

Not Available

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

Weloganite and Andradite Chemical Formula

While comparing Weloganite 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 Weloganite and Andradite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Weloganite and Andradite Specific Gravity

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