Malachite and Poldervaartite Physical Properties

Malachite

Poldervaartite

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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

3.25-4.102.91

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones (2009), Uneven

Handbook of mineralogy (2001)

1.6 Cleavage

Perfect on { 2 01} fair on {010}

None

1.7 Mohs Hardness

3.5-4Not Available

2 10

1.8 Chemical Composition

Cu₂CO₃(OH)₂

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Malachite and Poldervaartite Chemical Formula

While comparing Malachite and Poldervaartite 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 Poldervaartite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

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Malachite and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 2.91 whereas that of Poldervaartite is 2.91.