Malachite and Hercynite Physical Properties

Malachite

Hercynite

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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

3.25-4.104.39

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones (2009), Uneven

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Perfect on { 2 01} fair on {010}

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

1.7 Mohs Hardness

3.5-47.5-8

2 10

1.8 Chemical Composition

Cu₂CO₃(OH)₂

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

Malachite and Hercynite Chemical Formula

While comparing Malachite and Hercynite 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 Hercynite chemical formula.

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

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Malachite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 4.39 whereas that of Hercynite is 4.39.