Hercynite and Malachite Physical Properties

Hercynite

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.393.25-4.10

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

7.5-83.5-4

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Cu₂CO₃(OH)₂

Hercynite and Malachite Chemical Formula

While comparing Hercynite and Malachite 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 Hercynite and Malachite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Hercynite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.