Elbaite and Faustite Physical Properties
Specific Gravity
2.90-3.10
2.9
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Poor/indistinct on {1120} and {1011}
{???} Indistinct
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Elbaite and Faustite Chemical Formula
While comparing Elbaite and Faustite 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 Elbaite and Faustite chemical formula.
- Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
- Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Elbaite and Faustite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Elbaite and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Faustite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 2.9 whereas that of Faustite is 2.9.