Calcite and Dumortierite Physical Properties

Calcite

Dumortierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.73

3.26-3.41

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

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

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

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

1.7 Mohs Hardness

7-8.5

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

AlAl₆O₃BSi₃O₁₈

Calcite and Dumortierite Chemical Formula

While comparing Calcite 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 Calcite and Dumortierite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Calcite and Dumortierite Specific Gravity

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