Rossmanite and Malachite Physical Properties

Rossmanite

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

33.25-4.10

1 7.18

1.5 Fracture

Brittle, Metallic

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

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Cu₂CO₃(OH)₂

Rossmanite and Malachite Chemical Formula

While comparing Rossmanite 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 Rossmanite and Malachite chemical formula.

Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Malachite- Cu₂CO₃(OH)₂

Compare Gems Found in America

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Rossmanite and Malachite Specific Gravity

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