Dumortierite and Calcite Physical Properties

Dumortierite

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.67-2.73

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

7-8.53

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

CaCO 3Ulrich Henn and Claudio C.

Dumortierite and Calcite Chemical Formula

While comparing Dumortierite and Calcite 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 Dumortierite and Calcite chemical formula.

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

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Dumortierite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.