Phenakite and Beryllonite Physical Properties
Specific Gravity
2.90-2.98
2.79-2.87
Fracture
Conchoidal, ConchoidalWalter Schumann
Conchoidal
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
7.5-8
5.5-6
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Beryllonite Chemical Formula
While comparing Phenakite and Beryllonite 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 Phenakite and Beryllonite chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Beryllonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.