Franklinite and Andradite Physical Properties

Franklinite

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

5.05-5.223.70-4.10

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

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

1.6 Cleavage

None

none

1.7 Mohs Hardness

5.5-66.5-7

2 10

1.8 Chemical Composition

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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

Franklinite and Andradite Chemical Formula

While comparing Franklinite 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 Franklinite and Andradite chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Red Gemstones

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Franklinite Vs Hibonite

Franklinite Vs Hydrogrossular

Franklinite and Andradite Specific Gravity

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