Andalusite and Scolecite Physical Properties

Andalusite

Scolecite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.21

2.20-2.23

1.5 Fracture

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

Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven

1.6 Cleavage

Good on {110}, poor on {100}

Perfect on {110} and {1 1 0}

1.7 Mohs Hardness

7.5

5-5.5

1.8 Chemical Composition

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

CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

Andalusite and Scolecite Chemical Formula

While comparing Andalusite and Scolecite 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 Scolecite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

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Andalusite and Scolecite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Scolecite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Scolecite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.20-2.23 whereas that of Scolecite is 2.20-2.23.