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Tantalum (Tantal)

Pictures (1 Images total)

Tantal-Stabstück
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Tantal-Stabstück

Größe: 4,3 cm, Gewicht: 200,1 g; 3N
Collection: scheidewasser
Copyright: scheidewasser
Contribution: slugslayer 2006-02-08

Collectors Summary

Color grau-weiß
Lustre Metallglanz
Hardness (Mohs) 4
Crystal System kubisch, Im3m

Chemism

Chem­ical formula

Ta

Addi­tional chem. informa­tion

möglicherweise Tantalcarbid

Chem­ical com­po­si­tion

Tantal

Unit weight: 180.94791 u; Number of atoms in the formula: 1

Info

Empirical formula:

Ta

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Tantalum

Ta

100.00

1

100.00

180.9479100

180.9479100

Strunz 9th edi­tion incl. updates

1.AE.10

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
A: Metalle und intermetallische Legierungen
E: Eisen-Chrom-Familie
10:Taenit-Gruppe

Lapis Clas­sifica­tion

I/A.06-007

I: ELEMENTE
A: Metalle und intermetallische Verbindungen

IMA sta­tus

Diskreditiert von der CNMNC 1964, natürliches Vorkommen nicht bestätigt

Optical Properties

Color

grau-weiß

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

229

Space Group

Im3m

Cell param­e­ters a (Å)

3.31

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

36.265

X-Ray Pow­der Diffrac­tion

2.34(100),
1.654(20),
1.349(80),
1.171(30),
1.046(50)
XRD chart Tantalum

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4

Density (g/cm³)

16.44 (berechnet)

16.57 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Walther, 1909

Detailed description

Tantal als Element - Technische Daten

Ordnungszahl:

73

Dichte (g/cm3):

16,650

Härte:

6,5

relat. Atommasse (amu):

180,9479

Atomradius (berechnet) in pm:

145 (200)

Oxidationszahlen:

5

Elektronegativität (Pauling):

1,5

Elektronenkonfiguration:

[Xe]4f145d36s2

Schmelzpunkt:

3017°C (3290 K)

Siedepunkt:

5458°C (5731 K)

natürl. Häufigkeit:

1 ppm

References

Walther (1909), Nature 81, 335.

Bulletin de la Société Française Minéralogie et de Cristallographie 87 (1964), 291

Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections 361 (1998), 642

American Mineralogist 84 (1999), 992.

Strunz Mineralogical Tables 9. Edition (2001), 41.

Other languages

German

Tantal

French

Tantale

Spanish

Tantalio

English

Tantalum

Russian

Тантал

Alternative Name

Japanese

自然タンタル

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

 DeWikiPedia - search for: Tantal
Google-Bilder-Suche - search for: Tantal
Mineralienatlas.de (Forum) - search for: Tantal

English pages

 Mindat - search for: Tantalum
Webmineral - search for:Tantalum
Handbook-of-Mineralogy - search for: Tantalum
RRUFF - Raman, XRD and other mineral data - search for: Tantalum
RRUFF - References and PDF downloads - search for: Tantalum
American-Mineralogist-Crystal-Structure-Database - search for: Tantalum
Strahlen.org - search for: Tantalum

Russian pages

 Webmineral.ru - search for: Тантал

Mineral Dealer

German pages

 hausen - Mineralgroßhandel - search for: Tantal
Crystal-Treasure.com - search for: Tantal
Bosse - search for: Tantal
Edelsteine Neuburg - Gundolf Fischer - search for: Tantal

Locations with GPS information