Erythrite and Caledonite Physical Properties

Erythrite

Caledonite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.065.6-5.76

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

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

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

[001] perfect; [100] distinct

1.7 Mohs Hardness

Not Available2.5-3

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Caledonite Chemical Formula

While comparing Erythrite 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 Erythrite and Caledonite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Erythrite Vs Stolzite

Erythrite and Caledonite Specific Gravity

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