Londonite and Malachite Physical Properties

Londonite

Malachite

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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

3.343.25-4.10

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

None

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Cu₂CO₃(OH)₂

Londonite and Malachite Chemical Formula

While comparing Londonite and Malachite 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 Londonite and Malachite chemical formula.

Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Londonite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.