Thulite and Caledonite Physical Properties

Thulite

Caledonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.15.6-5.76

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Perfect {010} imperfect {100}

[001] perfect; [100] distinct

1.7 Mohs Hardness

6-72.5-3

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Thulite and Caledonite Chemical Formula

While comparing Thulite 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 Thulite and Caledonite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

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Thulite and Caledonite Specific Gravity

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