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Kieftite

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Formula:
CoSb3
Hardness:
5 - 5½
Crystal System:
Isometric
Name:
Named by R.T.M. Dobbe, W. Lustenhouwer, and M.A. Zakrzewski in 1994 in honor of Cornelis (‘Kees’) Kieft (Limmen, 29 September 1924 ‒ Heemstede, 6 February 1995), Dutch geologist and mineralogist, for his contributions to ore mineralogy.

This page provides mineralogical data about Kieftite.


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Classification of KieftiteHide

Approved
2.EC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
C : M:S = 1:>2
2.12.17.3

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2

Physical Properties of KieftiteHide

Hardness:
5 - 5½ on Mohs scale

Optical Data of KieftiteHide

Type:
Isotropic

Chemical Properties of KieftiteHide

Formula:
CoSb3
Common Impurities:
Ni,Fe,Cu,Cl

Crystallography of KieftiteHide

Crystal System:
Isometric
Cell Parameters:
a = 9.04 Å
Unit Cell V:
738.76 ų (Calculated from Unit Cell)

Type Occurrence of KieftiteHide

Geological Setting of Type Material:
Cu-Co-sulfide skarn ore

Synonyms of KieftiteHide

Other Language Names for KieftiteHide

German:Kieftit
Russian:Кифтит
Spanish:Kieftita

Relationship of Kieftite to other SpeciesHide

Other Members of this group:
Ferroskutterudite(Fe,Co)As3Iso. m3m (4/m 3 2/m) : Im3m
Nickelskutterudite(Ni,Co,Fe)As3Iso. m3 (2/m 3) : Im3
SkutteruditeCoAs3Iso. m3 (2/m 3) : Im3

Related Minerals - Nickel-Strunz GroupingHide

2.EC.05Nickelskutterudite(Ni,Co,Fe)As3Iso. m3 (2/m 3) : Im3
2.EC.05SkutteruditeCoAs3Iso. m3 (2/m 3) : Im3
2.EC.05Ferroskutterudite(Fe,Co)As3Iso. m3m (4/m 3 2/m) : Im3m
2.EC.10PatróniteVS4Mon.

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

2.12.17.1SkutteruditeCoAs3Iso. m3 (2/m 3) : Im3
2.12.17.2Nickelskutterudite(Ni,Co,Fe)As3Iso. m3 (2/m 3) : Im3

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 KieftiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kjekshus, A., Rakke, T. (1974) Compounds with the skutterudite type crystal structure. III. Structural data for arsenides and antimonides. Acta Chemica Scandinavica: A28: 99-103.
Dobbe, R.T.M., Lustenhouwer, W.J., Zakrzewski, M.A. (1994) Kieftite, CoSb3, a new member of the skutterudite group from Tunaberg, Sweden. Canadian Mineralogist: 32: 179-183.
Jambor, J.L., Roberts, A.C. (1995) New mineral names. American Mineralogist: 80: 184-188.
Nolas, G.S., Slack, G.A., Caillat, T., Meisner, G.P. (1996) Raman scattering study of antimony-based skutterudites. Journal of Applied Physics: 79: 2622-2626.
New Minerals (1997), New Minerals 1990-1994.
Anno, H., Matsubara, K., Caillat, T., Fleurial, J.P. (2000) Valence-band structure of the skutterudite compounds CoAs3, CoSb3, and RhSb3 studied by X-ray photoelectron spectroscopy. Physical Review B: 62: 10737-10743.
Peng, J., Yang, J., Bao, S., Chen, Y., Zhang, T. (2006) Study on Raman spectra of CoSb3-based skutterudite compounds. Rare Metal Materials and Engineering: 35: 272-275.

Internet Links for KieftiteHide

Localities for KieftiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
          • Bouismas (Bouismass)
Praszkier, T. (2010): Dyskrasit, Allargentum und Safflorit: Neufunde aus der Bouismas Mine, Bou Azzer, Marokko. Lapis, 35 (11), 32-34.
Sweden
 
  • Närke
    • Askersund
      • Zinkgruvan
Andersen, C. (2009): The mineralcomposition of the Burkland Cu-sulphide deposit at Zinkgruvan, Sweden- a supplementary study:Examensarbeten i Geologi vid Lunds Universitet- Bergrundsgeologi NR 249, 41 p
  • Södermanland
    • Nyköping
      • Tunaberg
Dobbe, R. T. M., Lustenhouwer, W. and Zakrzewski, M. A. (1994): Kieftite, CoSb3, a new member of the Skutterudite group from Tunaberg, Sweden. Canadian Mineralogist. 32, 179-183
Mineral and/or Locality  
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