Hemimorphite and Dumortierite Physical Properties

Hemimorphite

Dumortierite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.30-3.503.26-3.41

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Fibrous, ConchoidalWalter Schumann

Cleavage

Perfect on {110}, poor on {101}, {001} rare

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

Mohs Hardness

57-8.5

2 10

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Chemical Composition

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlAl₆O₃BSi₃O₁₈

Hemimorphite and Dumortierite Chemical Formula

While comparing Hemimorphite 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 Hemimorphite and Dumortierite chemical formula.

Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Hemimorphite and Dumortierite Specific Gravity

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