Andalusite and Rutile Physical Properties

Andalusite

Rutile

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.214.20-4.30

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good on {110}, poor on {100}

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

1.7 Mohs Hardness

7.56-6.5

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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

Andalusite and Rutile Chemical Formula

While comparing Andalusite 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 Andalusite and Rutile chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andalusite and Rutile Specific Gravity

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