Linarite and Corundum Physical Properties

Linarite

Corundum

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.353.90-4.05

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Difficult, Fibrous

1.6 Cleavage

Perfect on {100}, imperfect on {001}

None – parting in 3 directions

1.7 Mohs Hardness

2.59

2 10

1.8 Chemical Composition

PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Al 2O 3Arthur Thomas , Gemstones (2009)

Linarite and Corundum Chemical Formula

While comparing Linarite and Corundum 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 Linarite and Corundum chemical formula.

Chemical formula of Linarite- PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

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Linarite and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Linarite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Linarite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Linarite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.