Shigaite and Caledonite Physical Properties

Shigaite

Caledonite

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.325.6-5.76

1 7.18

1.5 Fracture

Flexible Flexible fragments.

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

1.6 Cleavage

Perfect on {0001}

[001] perfect; [100] distinct

1.7 Mohs Hardness

22.5-3

2 10

1.8 Chemical Composition

Not Available

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

Shigaite and Caledonite Chemical Formula

While comparing Shigaite 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 Shigaite and Caledonite chemical formula.

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

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Shigaite and Caledonite Specific Gravity

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