Andalusite and Cancrinite Physical Properties

Andalusite

Cancrinite

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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

3.05-3.21

2.42-2.52

1.5 Fracture

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

Irregular/uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Good on {110}, poor on {100}

Perfect on {10 1 0}, poor on {0001}

1.7 Mohs Hardness

7.5

5-6

1.8 Chemical Composition

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

Na 2Ca 2Al 6Si 6O 24(CO 3) 2Walter Schumann , Gemstones of the world (2001) More from other references

Andalusite and Cancrinite Chemical Formula

While comparing Andalusite and Cancrinite 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 Cancrinite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Cancrinite- Na 2Ca 2Al 6Si 6O 24(CO 3) 2Walter Schumann , Gemstones of the world (2001) More from other references

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Andalusite and Cancrinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Cancrinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Cancrinite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.42-2.52 whereas that of Cancrinite is 2.42-2.52.