Andradite and Caledonite Physical Properties

Andradite

Caledonite

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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

3.70-4.105.6-5.76

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

none

[001] perfect; [100] distinct

1.7 Mohs Hardness

6.5-72.5-3

2 10

1.8 Chemical Composition

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

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

Andradite and Caledonite Chemical Formula

While comparing Andradite and Caledonite 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 Caledonite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

Compare Green Gemstones

Andradite Vs Aragonite

Andradite Vs Augite

Andradite Vs Astrophyllite

Andradite and Caledonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.