Augite and Andalusite Physical Properties

Augite

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

3.19-3.563.05-3.21

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

{110} Perfect, {010} Indistinct

Good on {110}, poor on {100}

1.7 Mohs Hardness

5.5-67.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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

Augite and Andalusite Chemical Formula

While comparing Augite 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 Augite and Andalusite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Augite and Andalusite Specific Gravity

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