Andradite and Friedelite Physical Properties

Andradite

Friedelite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.103.06-3.19

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

none

{010} Perfect

1.7 Mohs Hardness

6.5-74-5

2 10

1.8 Chemical Composition

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

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

Andradite and Friedelite Chemical Formula

While comparing Andradite and Friedelite 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 Friedelite chemical formula.

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

Compare Green Gemstones

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Andradite and Friedelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.