Malachite and Dolomite Physical Properties

Malachite

Dolomite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Poorly soluble in dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-4.102.80-2.95

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones (2009), Uneven

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Perfect on { 2 01} fair on {010}

Perfect on {10 1 1}, rhombohedral cleavage

1.7 Mohs Hardness

3.5-43.5-4

2 10

1.8 Chemical Composition

Cu₂CO₃(OH)₂

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Malachite and Dolomite Chemical Formula

While comparing Malachite and Dolomite 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 Dolomite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Malachite and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.