Andalusite and Hardystonite Physical Properties

Andalusite

Hardystonite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.213.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

Good on {110}, poor on {100}

[001] good, [100] and [110] fair

1.7 Mohs Hardness

7.53-4

2 10

1.8 Chemical Composition

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

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Andalusite and Hardystonite Chemical Formula

While comparing Andalusite and Hardystonite 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 Hardystonite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

Andalusite Vs Augite

Andalusite Vs Baryte Barite

Andalusite Vs Baddeleyite

Andalusite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.