Biotite and Cassiterite Physical Properties
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.7-3.3
6.86-7.03
Fracture
Uneven, Even, Yellow, White
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
Perfect on the {001}
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
2.5-3.0
6-7
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Cassiterite Chemical Formula
While comparing Biotite and Cassiterite 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 Cassiterite chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Cassiterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.