Polyhalite and Rutile Physical Properties

Polyhalite

Rutile

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.784.20-4.30

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

3.56-6.5

2 10

1.8 Chemical Composition

Not Available

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Polyhalite and Rutile Chemical Formula

While comparing Polyhalite and Rutile 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 Rutile chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Polyhalite and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.