Andalusite and Lepidolite Physical Properties

Andalusite

Lepidolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.212.80-2.90

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good on {110}, poor on {100}

{001} perfect

1.7 Mohs Hardness

7.52.5

2 10

1.8 Chemical Composition

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

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

Andalusite and Lepidolite Chemical Formula

While comparing Andalusite and Lepidolite 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 Lepidolite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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Andalusite and Lepidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.