Pyroxmangite and Andalusite Physical Properties

Pyroxmangite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.76-3.773.05-3.21

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Cleavage

{110} Perfect, {110} Perfect

Good on {110}, poor on {100}

Mohs Hardness

5-67.5

2 10

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Chemical Composition

(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

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

Pyroxmangite and Andalusite Chemical Formula

While comparing Pyroxmangite 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 Pyroxmangite and Andalusite chemical formula.

Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Pyroxmangite and Andalusite Specific Gravity

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