Hematite and Andalusite Physical Properties

Hematite and Andalusite Chemical Formula

While comparing Hematite 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 Hematite and Andalusite chemical formula.

• Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
• Chemical formula of Andalusite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Hematite and Andalusite Specific Gravity

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