Malachite and Dumortierite Physical Properties

Malachite

Dumortierite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.25-4.103.26-3.41

1 7.18

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Fracture

Conchoidal, Uneven

Fibrous, ConchoidalWalter Schumann

Cleavage

Perfect on { 2 01} fair on {010}

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

Mohs Hardness

3.5-47-8.5

2 10

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Chemical Composition

Cu₂CO₃(OH)₂

AlAl₆O₃BSi₃O₁₈

Malachite and Dumortierite Chemical Formula

While comparing Malachite 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 Malachite and Dumortierite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Malachite and Dumortierite Specific Gravity

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