Caledonite and Annabergite Physical Properties

Caledonite

Annabergite

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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

5.6-5.763.07

1 7.18

1.5 Fracture

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

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

[001] perfect; [100] distinct

Perfect on {010}, indistinct on {100} and {102}

1.7 Mohs Hardness

2.5-32

2 10

1.8 Chemical Composition

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

Ni3(AsO4)2•8(H2O)

Caledonite and Annabergite Chemical Formula

While comparing Caledonite and Annabergite 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 Annabergite 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 Annabergite- Ni3(AsO4)2•8(H2O)

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Caledonite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.07 whereas that of Annabergite is 3.07.