Caledonite and Erythrite Physical Properties

Caledonite

Erythrite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.763.06

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

[001] perfect; [100] distinct

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

1.7 Mohs Hardness

2.5-3Not Available

2 10

1.8 Chemical Composition

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

Co3(AsO4)2•8(H2O)

Caledonite and Erythrite Chemical Formula

While comparing Caledonite and Erythrite 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 Caledonite and Erythrite chemical formula.

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

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Caledonite and Erythrite Specific Gravity

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