Malachite and Cobaltite Physical Properties

Malachite

Cobaltite

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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

3.25-4.106.3

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones (2009), Uneven

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Perfect on { 2 01} fair on {010}

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

3.5-45.5

2 10

1.8 Chemical Composition

Cu₂CO₃(OH)₂

CoAsSAnthony et al , Handbook of mineralogy (2001)

Malachite and Cobaltite Chemical Formula

While comparing Malachite and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Malachite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 6.3 whereas that of Cobaltite is 6.3.