Obsidian and Tantalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.35-2.60
5.2
Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Not Available
Good in one direction
Mohs Hardness
5-5.5
6-6.5
Chemical Composition
Not Available
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Obsidian and Tantalite Chemical Formula
While comparing Obsidian 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 Obsidian and Tantalite chemical formula.
>- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Obsidian and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Obsidian and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 5.2 whereas that of Tantalite is 5.2.