Riebeckite and Tantalite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.28-3.44
5.2
Fracture
Uneven, Splintery, Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Good in one direction
Mohs Hardness
5.0-6.0
6-6.5
Chemical Composition
Not Available
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Riebeckite and Tantalite Chemical Formula
While comparing Riebeckite 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 Riebeckite and Tantalite chemical formula.
>- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Riebeckite and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riebeckite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 5.2 whereas that of Tantalite is 5.2.