Mineralogy Database

Tantalum Mineral Data

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General Tantalum Information

Help on Chemical  Formula: Chemical Formula: Ta
Help on Composition: Composition: Molecular Weight = 180.95 gm
   Tantalum 100.00 %  Ta
            100.00 % 
Help on Empirical Formula: Empirical Formula: Ta
Help on Environment: Environment: Alluvial placer deposits.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Primorskiy Kray, near Osimovka and Abramovka Rivers, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Greek, Tantalos = father of Niobe.

Tantalum Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.3058, Z = 2; V = 36.13 Den(Calc)= 16.63
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.34(1)(110), 1.35(0.35)(112), 1.65(0.17)(200),1.17(0.11)(220),

Physical Properties of Tantalum

Help on Color: Color: Grayish yellow.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Magnetism: Magnetism: Nonmagnetic

Calculated Properties of Tantalum

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=13.4 gm/cc
note: Specific Gravity of Tantalum =16.6 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.00012
Boson Index = 0.99988
Help on Photoelectric: Photoelectric: PETantalum =1,276.15 barns/electron
U=PETantalum x rElectron Density=17123.55 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tantalum is Not Radioactive

Tantalum Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.00)Without Dana Classification Numbers
  (01.00.00)Metals Antitaenite* gamma-Fe3Ni Unk Cubic Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m IMA2007-036 TiFeSi2 Pbam 2/m 2/m 2/m Rhenium* Re P 63/mmc 6/m 2/m 2/m Tantalum* Ta I m3m 4/m 3 2/m Titanium* Ti P 63/mmc 6/m 2/m 2/m Tongxinite* Cu2Zn Unk Cubic
Help on  Strunz Class: Strunz Class: 01.XX.00 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.X - Unclassified Strunz ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, pho
  01.XX -Metals
01.XX.00 Tantalum* Ta I m3m 4/m 3 2/m
01.XX.00 Hexamolybdenum! (Mo,Ru,Fe,Ir,Os) P 63/mmc 6/m 2/m 2/m
01.XX.00 Brownleeite! MnSi P 213 2 3

Other Tantalum Information

Help on References: References: PHYS. PROP.(Dana)
Help on See Also: See Also: Links to other databases for Tantalum :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 01.XX.00