Biotite and Danburite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.7-3.3
2.97-3.03
Fracture
Uneven, Even, Yellow, White
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Perfect on the {001}
{001} Poor
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Danburite Chemical Formula
While comparing Biotite and Danburite 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 Biotite and Danburite chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Danburite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.