Faustite and Petalite Physical Properties

Faustite and Petalite Chemical Formula

While comparing Faustite and Petalite 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 Faustite and Petalite chemical formula.

• Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Petalite- LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Petalite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 2.40 whereas that of Petalite is 2.40.