Malachite and Periclase Physical Properties

Malachite

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-4.103.7-3.9

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones (2009), Uneven

Conchoidal, Brittle

1.6 Cleavage

Perfect on { 2 01} fair on {010}

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

3.5-45.5-6

2 10

1.8 Chemical Composition

Cu₂CO₃(OH)₂

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Malachite and Periclase Chemical Formula

While comparing Malachite and Periclase 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 Periclase chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Malachite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.