Austinite and Andalusite Physical Properties

Austinite

Andalusite

Add ⊕

Physical Properties

Tenacity

Brittle

Solubility

Easily soluble in cold dilute HCl

Durability

Specific Gravity

4.123.05-3.21

1 7.18

👆🏻

Fracture

Uneven

Uneven, Subconchoidal, Splintery

Cleavage

Good in two directions parallel to the prism faces {110}

Good on {110}, poor on {100}

Mohs Hardness

4-4.57.5

2 10

👆🏻

Chemical Composition

CaZn(AsO4)(OH)

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

Austinite and Andalusite Chemical Formula

While comparing Austinite 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 Austinite and Andalusite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Green Gemstones

Austinite Vs Apophyllite KF

Austinite Vs Gaspeite

Austinite Vs Gyrolite

Austinite and Andalusite Specific Gravity

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