Friedelite and Andradite Physical Properties

Friedelite

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

3.06-3.193.70-4.10

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

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

1.6 Cleavage

{010} Perfect

none

1.7 Mohs Hardness

4-56.5-7

2 10

1.8 Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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

Friedelite and Andradite Chemical Formula

While comparing Friedelite 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 Friedelite and Andradite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Friedelite and Andradite Specific Gravity

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