Fuchsite and Andalusite Physical Properties

Fuchsite

Andalusite

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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

2.77-2.883.05-3.21

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Perfect basal

Good on {110}, poor on {100}

1.7 Mohs Hardness

2.57.5

2 10

1.8 Chemical Composition

K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

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

Fuchsite and Andalusite Chemical Formula

While comparing Fuchsite 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 Fuchsite and Andalusite chemical formula.

Chemical formula of Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Fuchsite and Andalusite Specific Gravity

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