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Tantalcarbide

Additional Functions

Collectors Summary

Color gelblichgrau-metallisch, metallisch-bronzefarben
Lustre Metallglanz
Hardness (Mohs) 6 - 7
Crystal System kubisch, Fm3m

Chemism

Chemical formula

TaC

Chemical composition

Tantal, Kohlenstoff

Unit weight: 192.95869 u; Number of atoms in the formula: 2

Info

Empirical formula:

TaC

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Carbon

C

6.22

1

50.00

12.0107800

12.0107800

Tantalum

Ta

93.78

1

50.00

180.9479100

180.9479100

Strunz 9th edition incl. updates

1.BA.20

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
B: Metallische Kohlenstoffverbindungen (Carbide), Strickstoffverbindungen (Nitride) und Phosphorverbindungen (Phosphide)
A: Carbide
20:Tantalcarbid-Gruppe

Lapis Classification

I/A.09-060

I: ELEMENTE
A: Metalle und intermetallische Verbindungen
9: Carbide, Nitride, Phosphide und Silicide (metallartige Verbindungen)

Classification by Hölzel

1.BA.400

1: ELEMENTS
B: Carbides, Silicides, Phosphides, Nitrides
A: Carbides

Dana 8th edition

01.01.19.04

01: Native Elements and Alloys
01: Native Elements with metallic elements other than the platinum group
19: Osbornite group carbides and nitrides

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelblichgrau-metallisch, metallisch-bronzefarben

Change in color

weiß bis cremweiß in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Anisotropism

Isotropisch

Reflectivity: (Lambda nm) ↓, ↑, Ø

(470) 41.1, , 41.1
(546) 48.2, , 48.2
(589) 52.4, , 52.4
(650) 56.6, , 56.6

Reflection chart Tantalcarbide

Reflectivity Ø

49.58

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

225

Space Group

Fm3m

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

4

X-Ray Powder Diffraction

2.56(100),
2.22(90),
1.572(40),
1.342(30),
1.285(10),
1.022(10),
0.995(10),
0.857(10)

XRD chart Tantalcarbide

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6 - 7

Density (g/cm³)

14.5 (gemessen) 14.47 (berechnet)

Preface

Author (Name, Year)

Strunz, 1966

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H228: Entzündbarer Feststoff., P210: Von Hitze, heißen Oberflächen, Funken, offenen Flammen sowie anderen Zündquellenarten fernhalten. Nicht rauchen., P240: Behälter und zu befüllende Anlage erden., P241: Explosionsgeschützte elektrische Betriebsmittel / Lüftungsanlagen / Beleuchtung / … verwenden., P280: Schutzhandschuhe / Schutzkleidung / Augenschutz / Gesichtsschutz tragen., P370+P378: Bei Brand: … zum Löschen verwenden.

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 126 (1997) (1), 76.

American Mineralogist 47 (1992), 786

Journal of Physical Chemistry 65 (1961), 1596

Other languages

German

Tantalcarbid

English

Tantalcarbide

French

Tantalcarbure

Spanish

Tantalcarburo

Russian

Танталкарбид

Japanese

タンタルカーバイト

old name

English

Native Tantalum

Original as native tantalum reported

CNMNC symbol

Symbol

Tcb

IDs

GUSID (Global unique identifier short form) vZb0P9n-6EuWx780FvqJCQ
GUID (Global unique identifier) 3FF496BD-FED9-4BE8-96C7-BF3416FA8909
Database ID 3756