Barite and Andalusite Physical Properties

Barite

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

4.483.05-3.21

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

{010} Perfect, {210} Perfect, {010} Imperfect

Good on {110}, poor on {100}

1.7 Mohs Hardness

3-3.57.5

2 10

1.8 Chemical Composition

BaSO4

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

Barite and Andalusite Chemical Formula

While comparing Barite 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 Barite and Andalusite chemical formula.

Chemical formula of Barite- BaSO4
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Barite and Andalusite Specific Gravity

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