Kieftite Mineral Data

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General Kieftite Information

Chemical Formula:

CoSb3

Composition:

Molecular Weight = 424.18 gm

Cobalt 13.89 % Co

Antimony 86.11 % Sb

______

100.00 %

Empirical Formula:

CoSb₃

IMA Status:

Approved IMA 1994

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named in 1994 for Cornelis Kieft (b.1924), Dutch mineralogist.

Name Pronunciation:

Kieftite

Synonym:

ICSD 62110

PDF 47-1769

Kieftite Image

Images:

Kieftite

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

Cell Dimensions:

a = 9.0411, Z = 8; V = 739.03 Den(Calc)= 7.62

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: I m3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.86(1), 0.933(0.8), 2.02(0.8),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
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Dobbe R T M , Lustenhouwer W J , Zakrzewski M A , Goubitz K , Fraanje J , Schenk H , The Canadian Mineralogist , 32 (1994) p.179-183, Kieftite, CoSb3, a new member of the skutterudite group from Tunaberg, Sweden, Locality: Tunaberg, Sweden

Physical Properties of Kieftite

Cleavage:

None

Color:

Tin white.

Density:

7.2

Diaphaneity:

Opaque

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Metallic

Streak:

gray

Calculated Properties of Kieftite

Electron Density:

Bulk Density (Electron Density)=6.47 gm/cc
note: Specific Gravity of Kieftite =7.62 gm/cc.

Fermion Index:

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_Kieftite= 303.60 barns/electron
U=PE_Kieftite x rElectron Density=1,963.41 barns/cc.

Radioactivity:

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

Kieftite Classification

Dana Class:

02.12.17.03 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.17)Skutterudite Series

02.12.17.01 Skutterudite (Co,Ni)As3-x I m3 2/m 3

02.12.17.02 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3

02.12.17.03 Kieftite CoSb3 I m3 2/m 3

02.12.17.04 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3

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

References:

NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996)

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
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Kieftite Specimen Label here :

Kieftite

CoSb3
Dana No: 02.12.17.03 Strunz No: 02.EC.05
Locality:

Notes: