Hemimorphite and Spinel Physical Properties

Hemimorphite

Spinel

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.30-3.503.64-3.66

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Conchoidal, Uneven

Cleavage

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

None, but may exhibit slight parting

Mohs Hardness

2 10

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Chemical Composition

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

MgAl₂O₄

Hemimorphite and Spinel Chemical Formula

While comparing Hemimorphite and Spinel 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 Spinel 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 Spinel- MgAl₂O₄

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Hemimorphite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.