Andalusite and Clinozoisite Physical Properties

Andalusite

Clinozoisite

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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

3.21-3.38

1.5 Fracture

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

Irregular/uneven, Uneven

1.6 Cleavage

Good on {110}, poor on {100}

Perfect on {001}

1.7 Mohs Hardness

7.5

6-7

1.8 Chemical Composition

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

Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Andalusite and Clinozoisite Chemical Formula

While comparing Andalusite and Clinozoisite 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 Clinozoisite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Clinozoisite- Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Brown Gemstones

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Andalusite and Clinozoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Clinozoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Clinozoisite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.21-3.38 whereas that of Clinozoisite is 3.21-3.38.