Afghanite and Andalusite Physical Properties

Afghanite

Andalusite

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.55-2.65

Conchoidal

Perfect {10 1 0}

5.5-6

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

3.05-3.21

Uneven, Subconchoidal, Splintery

Good on {110}, poor on {100}

7.5

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

Afghanite and Andalusite Chemical Formula

While comparing Afghanite 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 Afghanite and Andalusite chemical formula.

Compare Blue Gemstones

Afghanite Vs Glaucophane

Afghanite Vs Hauyne

Afghanite Vs Kainite

Afghanite and Andalusite Specific Gravity

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