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Tantalcarbide

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About TantalcarbideHide

Formula:
TaC
Colour:
Bronze
Lustre:
Metallic
Hardness:
6 - 7
Crystal System:
Isometric
Name:
Re-named in 1966 by Hugo Strunz in reference to its composition: tantalum and carbon. Originally thought to be native tantalum by Paul Walther in 1909. Re-named tantalum carbide in 1926 by Victor Goldschmidt. The composition was verified in 1962 by Clifford Frondel.
Isostructural with:
The Ta analogue of niobocarbide. Unique combination of elements: the only Ta-C mineral known.


Classification of TantalcarbideHide

Approved, 'Grandfathered' (first described prior to 1959)
1.BA.20

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
A : Carbides
1.1.29.2

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group

Physical Properties of TantalcarbideHide

Metallic
Transparency:
Opaque
Colour:
Bronze
Hardness:
6 - 7 on Mohs scale

Optical Data of TantalcarbideHide

Type:
Isotropic

Chemical Properties of TantalcarbideHide

Formula:
TaC

Crystallography of TantalcarbideHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fm3m
Setting:
Fm3m

Type Occurrence of TantalcarbideHide

Other Language Names for TantalcarbideHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Niobocarbide5 photos of Tantalcarbide associated with Niobocarbide on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

1.BA.05CoheniteFe3COrth.
1.BA.10Haxonite(Fe,Ni)23C6Iso. m3m (4/m 3 2/m) : Fm3m
1.BA.10Isovite(Cr,Fe)23C6Iso. m3m (4/m 3 2/m) : Fm3m
1.BA.15TongbaiteCr3C2Orth.
1.BA.20Khamrabaevite(Ti,V,Fe)C
1.BA.20Niobocarbide(Nb,Ta)CIso. m3m (4/m 3 2/m) : Fm3m
1.BA.25QusongiteWCHex. 6 m2 : P6m2
1.BA.30YarlongiteCr4Fe4NiC4Hex. 6mm : P63mc

Related Minerals - Dana Grouping (8th Ed.)Hide

1.1.29.1Niobocarbide(Nb,Ta)CIso. m3m (4/m 3 2/m) : Fm3m
1.1.29.3QusongiteWCHex. 6 m2 : P6m2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TantalcarbideHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Novgorodova M.I. et al. (1997), Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 126(1): 76.
American Mineralogist (1996): 81: 751-755. ???

Internet Links for TantalcarbideHide

Localities for TantalcarbideHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Nizhnii Tagil
          • Baranchinsky Massif
            • Aktai River
Novgorodova M.I., Generalov M.E., Trubkin N.V. (1997) A new TaC-NbC isomorphous series and Niobocrbide, a new mineral from platinum-bearing placers of the Urals, - ZVMO, 126(1), pp.76-95 (in Rus.); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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