Biotite and Tantalite Physical Properties

Biotite

Tantalite

Add ⊕

Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.7-3.35.2

1 7.18

👆🏻

Fracture

Uneven, Even

Subconchoidal, Conchoidal

Cleavage

Perfect on the {001}

Good in one direction

Mohs Hardness

2.5-3.06-6.5

2 10

👆🏻

Chemical Composition

K(Mg,Fe++)3[AlSi3O10(OH,F)2

(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

Biotite and Tantalite Chemical Formula

While comparing Biotite and Tantalite 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 Tantalite chemical formula.

Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

Compare Yellow Gemstones

Biotite Vs Weloganite

Biotite Vs Pyrite Marcasite

Biotite Vs Druzy

Biotite and Tantalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 5.2 whereas that of Tantalite is 5.2.