Pyrrhotite and Andalusite Physical Properties

Pyrrhotite

Andalusite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.58-4.653.05-3.21

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Absent

Good on {110}, poor on {100}

1.7 Mohs Hardness

3.5-4.57.5

2 10

1.8 Chemical Composition

Not Available

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

Pyrrhotite and Andalusite Chemical Formula

While comparing Pyrrhotite 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 Pyrrhotite and Andalusite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Pyrrhotite and Andalusite Specific Gravity

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