Beryllonite and Jacobsite Physical Properties
Specific Gravity
2.79-2.87
4.76-5.03
Fracture
Conchoidal
Conchoidal
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
None
Mohs Hardness
5.5-6
5.5-6.5
Chemical Composition
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Beryllonite and Jacobsite Chemical Formula
While comparing Beryllonite and Jacobsite 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 Beryllonite and Jacobsite chemical formula.
- Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Beryllonite and Jacobsite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Beryllonite and Jacobsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Jacobsite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 4.76-5.03 whereas that of Jacobsite is 4.76-5.03.