Tantalum Mineral Data

General Tantalum Information

Chemical Formula:

Composition:

Molecular Weight = 180.95 gm

Tantalum 100.00 % Ta

______

100.00 %

Empirical Formula:

Environment:

Alluvial placer deposits.

IMA Status:

Not Approved IMA

Locality:

Primorskiy Kray, near Osimovka and Abramovka Rivers, Russia. Link to MinDat.org Location Data.

Name Origin:

Greek, Tantalos = father of Niobe.

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Tantalum Crystallography

Cell Dimensions:

a = 3.3058, Z = 2; V = 36.13 Den(Calc)= 16.63

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I m3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.34(1)(110), 1.35(0.35)(112), 1.65(0.17)(200),1.17(0.11)(220),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Wyckoff R W G , Crystal Structures , 1 (1963) p.7-83, Second edition. Interscience Publishers, New York, New York, Body centered cubic, bcc, structure

Physical Properties of Tantalum

Color:

Grayish yellow.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Luminescence:

Non-fluorescent.

Magnetism:

Nonmagnetic

Calculated Properties of Tantalum

Electron Density:

Bulk Density (Electron Density)=13.4 gm/cc
note: Specific Gravity of Tantalum =16.6 gm/cc.

Fermion Index:

Fermion Index = 0.00012
Boson Index = 0.99988

Photoelectric:

PE_Tantalum=1,276.15 barns/electron
U=PE_Tantalum x rElectron Density=17123.55 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tantalum is Not Radioactive

Tantalum Classification

Dana Class:

01.00.00.00 (01)Native Elements

(01.00)Without Dana Classification Numbers

(01.00.00)Metals

01.00.00.00 Antitaenite* gamma-Fe3Ni Unk Cubic

01.00.00.00 Goldamalgam* (Au,Ag)Hg I m3m 4/m 3 2/m

01.00.00.00 IMA2007-036 TiFeSi2 Pbam 2/m 2/m 2/m

01.00.00.00 Rhenium* Re P 6₃/mmc 6/m 2/m 2/m

01.00.00.00 Tantalum* Ta I m3m 4/m 3 2/m

01.00.00.00 Titanium* Ti P 6₃/mmc 6/m 2/m 2/m

01.00.00.00 Tongxinite* Cu2Zn Unk Cubic

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

References:

PHYS. PROP.(Dana)

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
11 - WWW-MINCRYST

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Print or Cut-and-Paste your Tantalum Specimen Label here :

Tantalum

Ta
Dana No: 01.00.00.00 Strunz No: 01.XX.00
Locality:

Notes: