Polyhalite and Linarite Physical Properties

Polyhalite

Linarite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.785.35

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

Perfect on {100}, imperfect on {001}

1.7 Mohs Hardness

3.52.5

2 10

1.8 Chemical Composition

Not Available

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

Polyhalite and Linarite Chemical Formula

While comparing Polyhalite and Linarite 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 Polyhalite and Linarite chemical formula.

Chemical formula of Linarite- PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Polyhalite and Linarite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Linarite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Linarite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 5.35 whereas that of Linarite is 5.35.