Clinozoisite and Andalusite Physical Properties

Clinozoisite

Andalusite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.21-3.383.05-3.21

1 7.18

1.5 Fracture

Irregular/uneven, Uneven

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

1.6 Cleavage

Perfect on {001}

Good on {110}, poor on {100}

1.7 Mohs Hardness

6-77.5

2 10

1.8 Chemical Composition

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

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

Clinozoisite and Andalusite Chemical Formula

While comparing Clinozoisite and Andalusite 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 Clinozoisite and Andalusite chemical formula.

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

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Clinozoisite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Clinozoisite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Clinozoisite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Clinozoisite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.