Plumbogummite and Andalusite Physical Properties

Plumbogummite

Andalusite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0143.05-3.21

1 7.18

1.5 Fracture

Uneven, Conchoidal

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

1.6 Cleavage

None

Good on {110}, poor on {100}

1.7 Mohs Hardness

4-57.5

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Andalusite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Andalusite chemical formula.

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

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Plumbogummite and Andalusite Specific Gravity

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