Tantalcarbide Mineral Data

General Tantalcarbide Information

Chemical Formula:

TaC

Composition:

Molecular Weight = 192.96 gm

Tantalum 93.78 % Ta

Carbon 6.22 % C

______

100.00 %

Empirical Formula:

TaC

Environment:

Platiniferous placers

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

The mineral was discovered in the Nizhnetagilsky District in the Middle Urals, Russia, in a collection made by P. Walther at the beginning of the 20th century. Link to MinDat.org Location Data.

Name Origin:

The name reflects its composition: tantalum and carbon.

Tantalcarbide Image

Images:

Tantalcarbide

Comments: Dark gray metallic tantalcarbide grains in sand.
Location: Nizhnii Tagil Massif, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tantalcarbide Crystallography

Crystal System:

Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m

Physical Properties of Tantalcarbide

Color:

Yellow gray.

Density:

14.5

Diaphaneity:

Opaque

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Sub Metallic

Calculated Properties of Tantalcarbide

Electron Density:

Bulk Density (Electron Density)=11.9 gm/cc
note: Specific Gravity of Tantalcarbide =14.5 gm/cc.

Fermion Index:

Fermion Index = 0.000797241
Boson Index = 0.999202759

Photoelectric:

PE_{Tantalcarbide}=1,179.24 barns/electron
U=PE_{Tantalcarbide} x rElectron Density=14001.12 barns/cc.

Radioactivity:

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

Tantalcarbide Classification

Dana Class:

01.01.19.04 (01)Native Elements

(01.01)with metallic elements other than the platinum group

(01.01.19)Osbornite group carbides and nitrides

01.01.19.01 Osbornite TiN F m3m 4/m 3 2/m

01.01.19.02 Khamrabaevite (Ti,V,Fe)C F m3m 4/m 3 2/m

01.01.19.03 Niobocarbide! (Nb,Ta)C F m3m 4/m 3 2/m

01.01.19.04 Tantalcarbide! TaC F m3m 4/m 3 2/m

Strunz Class:

01.BA.20 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.B - Metallic Carbides, Silicides, Nitrides and Phosphides

01.BA -Carbides

01.BA.20 Khamrabaevite (Ti,V,Fe)C F m3m 4/m 3 2/m

01.BA.20 Niobocarbide! (Nb,Ta)C F m3m 4/m 3 2/m

01.BA.20 Tantalcarbide! TaC F m3m 4/m 3 2/m

Other Tantalcarbide Information

References:

NAME( CanMin, 8/99)

See Also:

Links to other databases for Tantalcarbide :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Tantalcarbide

TaC
Dana No: 01.01.19.04 Strunz No: 01.BA.20
Locality:

Notes:

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