Andalusite and Anorthoclase Physical Properties

Andalusite

Anorthoclase

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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

2.56-2.62

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Good on {110}, poor on {100}

From the Greek for oblique and fracture, descriptive of the cleavage

1.7 Mohs Hardness

7.5

6-6.5

1.8 Chemical Composition

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

(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Andalusite and Anorthoclase Chemical Formula

While comparing Andalusite and Anorthoclase 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 Anorthoclase chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

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Andalusite and Anorthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.