Caledonite and Dumortierite Physical Properties

Caledonite

Dumortierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.763.26-3.41

1 7.18

1.5 Fracture

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

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

[001] perfect; [100] distinct

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

2.5-37-8.5

2 10

1.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Caledonite and Dumortierite Chemical Formula

While comparing Caledonite and Dumortierite 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 Dumortierite 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 Dumortierite- AlAl₆O₃BSi₃O₁₈

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Caledonite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.