Caledonite and Kyanite Physical Properties

Caledonite

Kyanite

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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

5.6-5.763.53-3.65

1 7.18

1.5 Fracture

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

Splintery, Brittle, Metallic

1.6 Cleavage

[001] perfect; [100] distinct

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

2.5-34-7

2 10

1.8 Chemical Composition

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

Not Available

Caledonite and Kyanite Chemical Formula

While comparing Caledonite and Kyanite 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 Kyanite 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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Caledonite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.