Andalusite and Leucite Physical Properties

Andalusite

Leucite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.212.45-2.50

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Good on {110}, poor on {100}

Poor on {110}

1.7 Mohs Hardness

7.55.5-6

2 10

1.8 Chemical Composition

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

KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Andalusite and Leucite Chemical Formula

While comparing Andalusite and Leucite 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 Leucite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Leucite- KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Andalusite and Leucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Leucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Leucite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.45-2.50 whereas that of Leucite is 2.45-2.50.