Andalusite and Hureaulite Physical Properties

Andalusite

Hureaulite

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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

3.05-3.213.19

1 7.18

1.5 Fracture

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

Brittle, Uneven

1.6 Cleavage

Good on {110}, poor on {100}

{???} Distinct

1.7 Mohs Hardness

7.53.5

2 10

1.8 Chemical Composition

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

Mn2+5(PO 4) 2(PO 3OH) 2 · 4H 2O)Michael OâDonoghue , Gems, Sixth Edition (2006)

Andalusite and Hureaulite Chemical Formula

While comparing Andalusite and Hureaulite 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 Andalusite and Hureaulite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Hureaulite- Mn2+5(PO 4) 2(PO 3OH) 2 · 4H 2O)Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andalusite and Hureaulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Hureaulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Hureaulite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.19 whereas that of Hureaulite is 3.19.