Kieftite Mineral Data

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.

Synonym:

ICSD 62110

PDF 47-1769

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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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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

Diaphaniety:

Opaque

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Metallic

Streak:

gray

Calculated Properties of Kieftite

Electron Density:

r_electron=6.47 gm/cc
note: r_Kieftite=7.62 gm/cc.

Fermion Index

Fermion Index = 0
Boson Index = 1

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kieftite is Not Radioactive

Kieftite Classification

Dana Class:

2.12.17.3 (2)Sulfides - Including Selenides and Tellurides

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

(2.12.17)Dana Group

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

2.12.17.2 Nickel-skutterudite (Ni,Co)As3-x I m3 2/m 3

2.12.17.3 Kieftite CoSb3 I m3 2/m 3

Strunz Class:

II/D.29-25 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.29 - Skutterudite - Iridisite series

II/D.29-10 Skutterudite (Co,Ni)As3-x I m3 2/m 3

II/D.29-20 Nickel-skutterudite (Ni,Co)As3-x I m3 2/m 3

II/D.29-25 Kieftite CoSb3 I m3 2/m 3

II/D.29-30 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic

II/D.29-40 Gaotaiite Ir3Te8 P a3 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Kieftite

CoSb3
Dana No: 2.12.17.3 Strunz No: II/D.29-25
Locality:

Notes: