Andalusite and Microlite Physical Properties

Andalusite

Microlite

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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

3.05-3.21

5.5

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Good on {110}, poor on {100}

{111} Indistinct, {111} Indistinct, {111} Indistinct

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

(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Andalusite and Microlite Chemical Formula

While comparing Andalusite and Microlite 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 Microlite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Microlite- (Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Andalusite and Microlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Microlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Microlite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 5.5 whereas that of Microlite is 5.5.