Rutile and Austinite Physical Properties

Rutile

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Insoluble in acids

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

4.20-4.304.12

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

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

Good in two directions parallel to the prism faces {110}

1.7 Mohs Hardness

6-6.54-4.5

2 10

1.8 Chemical Composition

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

CaZn(AsO4)(OH)

Rutile and Austinite Chemical Formula

While comparing Rutile and Austinite 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 Rutile and Austinite chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Rutile and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rutile and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Austinite Optical Properties during the identification of gemstone. Specific gravity of Rutile is 4.12 whereas that of Austinite is 4.12.