Sellaite and Tantalite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.14-3.16
5.2
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {010} and {110}
Good in one direction
Mohs Hardness
5-5.5
6-6.5
Chemical Composition
MgF 2Ulrich Henn and Claudio C.
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Sellaite and Tantalite Chemical Formula
While comparing Sellaite 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 Sellaite and Tantalite chemical formula.
- Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Sellaite and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sellaite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 5.2 whereas that of Tantalite is 5.2.