×

Topaz
Topaz

Biotite
Biotite



ADD
Compare
X
Topaz
X
Biotite

Topaz and Biotite Physical Properties

Add ⊕
1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.49-3.572.7-3.3
Amber
1 7.18
1.5 Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Even, Yellow, White
1.6 Cleavage
[001] Perfect
Perfect on the {001}
1.7 Mohs Hardness
82.5-3.0
Amber
2 10
1.8 Chemical Composition
Al2SiO4(F,OH)2
K(Mg,Fe++)3[AlSi3O10(OH,F)2

Topaz and Biotite Chemical Formula

While comparing Topaz and Biotite 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 Topaz and Biotite chemical formula.

  • Chemical formula of Topaz- Al2SiO4(F,OH)2
  • Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Topaz and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Biotite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.7-3.3 whereas that of Biotite is 2.7-3.3.