Erythrite and Hemimorphite Physical Properties

Erythrite

Hemimorphite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.063.30-3.50

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

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

1.7 Mohs Hardness

Not Available5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Hemimorphite Chemical Formula

While comparing Erythrite and Hemimorphite 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 Erythrite and Hemimorphite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Erythrite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.