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Kieftite Mineral Data

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General Kieftite Information

Help on Chemical  Formula: Chemical Formula: CoSb3
Help on Composition: Composition: Molecular Weight = 424.18 gm
   Cobalt    13.89 %  Co
   Antimony  86.11 %  Sb
            100.00 % 
Help on Empirical Formula: Empirical Formula: CoSb3
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1994 for Cornelis Kieft (b.1924), Dutch mineralogist.
Help on Name Pronunciation: Name Pronunciation: Kieftite Say KIEFTITE
Help on Synonym: Synonym: ICSD 62110
  PDF 47-1769

Kieftite Image

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Comments: Euhedral kieftite (Kf) crystal in chalcopyrite (Cp) with bismuth (bi) and bornite (Bn). CanMin 32:179.
Location: Tunaberg C u-Co-sulfide skam ores, southeastem Bergslagen, Sweden. Scale: Crystal size 80 µm.
© Canadian Mineralogist

Kieftite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 9.0411, Z = 8; V = 739.03 Den(Calc)= 7.62
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: I m3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 0.933(0.8), 2.02(0.8),

Physical Properties of Kieftite

Help on Cleavage: Cleavage: None
Help on Color: Color: Tin white.
Help on Density: Density: 7.2
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Metallic
Help on Streak: Streak: gray

Calculated Properties of Kieftite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.47 gm/cc
note: Specific Gravity of Kieftite =7.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PEKieftite = 303.60 barns/electron
U=PEKieftite x rElectron Density=1,963.41 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kieftite is Not Radioactive

Kieftite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.17)Skutterudite Series Skutterudite (Co,Ni)As3-x I m3 2/m 3 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3 Kieftite CoSb3 I m3 2/m 3 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3
Help on  Strunz Class: Strunz Class: 02.EC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EC -M:S = 1:>2
02.EC.05 Dienerite? Ni3As I 43d 4 3m
02.EC.05 Kieftite CoSb3 I m3 2/m 3
02.EC.05 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3
02.EC.05 Skutterudite (Co,Ni)As3-x I m3 2/m 3
02.EC.05 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3

Other Kieftite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996)
Help on See Also: See Also: Links to other databases for Kieftite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 02.EC.05





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