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Kieftite

Additional Functions

Collectors Summary

Color zinnweiß
Streak color grau
Lustre hoher Metallglanz
Hardness (Mohs) 5.25
Cleavages keine
Fracture muschelig
Crystal System kubisch, Im3
Morphology Tracht aus {100}, {110} und {111}

Chemism

Chem­ical formula

CoSb3

Empir­ical formula (anal­y­sis)

(Co0.91Ni0.05Fe0.02Cu0.02)(Sb2.97Cl0.03)

Chem­ical com­po­si­tion

Antimon, Kobalt

Unit weight: 421.642806819 u; Number of atoms in the formula: 4

Info

Empirical formula:

(Co0.91Ni0.05Fe0.02Cu0.02)(Sb2.97Cl0.03)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Chlorine

Cl

0.25

0.03

0.75

35.4532000

1.0635960

Iron

Fe

0.26

0.02

0.50

55.8452000

1.1169040

Cobalt

Co

12.72

0.91

22.75

58.9332009

53.6292128

Nickel

Ni

0.70

0.05

1.25

58.6934200

2.9346710

Copper

Cu

0.30

0.02

0.50

63.5463000

1.2709260

Antimony

Sb

85.77

2.97

74.25

121.7601000

361.6274970

Anal­y­sis wt%

Ø Co : 12.80, Ni : 0.70, Fe : 0.30, Cu : 0.20, Sb : 85.80, Cl : 0.3 (Ref: Canadian Mineralogist 94)

Strunz 9th edi­tion incl. updates

2.EC.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
C: M:S = 1:>2
05:Skutterudit-Gruppe

Lapis Clas­sifica­tion

II/D.29-025

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1

Clas­sifica­tion by Hölzel

2.EC.110

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
C: Me/S=1/3 With Co,Ni
1: Skutterudite-Group

Dana 8th edi­tion

02.12.17.03

02: Sulfide Minerals
12: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:2
17: Skutterudite Series

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Perovskite supergroup  ⇒ Non-stoichiometric perovskites  ⇒ Skutterudite subgroup

Optical Properties

Color

zinnweiß

Streak color

grau

Diaphane­ity (Trans­parency)

opak

Lus­tre

hoher Metallglanz

Anisotropism

keine Innenreflexe

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(470) , , 59.0
(546) , , 58.7
(589) , , 58.7
(650) , , 58.7

Reflection chart Kieftite

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3

Space Group number

204

Space Group

Im3

Cell param­e­ters a (Å)

9.041

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

739.008

Kristall struc­ture

kubisch primitives Gitter; isomorph mit Skutterudit

X-Ray Pow­der Diffrac­tion

2.86(100),
2.42(60),
2.02(80),
1.77(60),
1.55(60),
1.331(70),
1.186(60),
1.052(60)

XRD chart Kieftite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphol­ogy

Tracht aus {100}, {110} und {111}

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5.25

VHN (Hard­ness Vick­ers)

467 (100g)

Density (g/cm³)

7.2

7.579 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

muschelig

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Schweden/Södermanland, Provinz/Nyköping/Tunaberg

Type mate­r­ial

Instituut voor Aardwetenschappen, Vrije Universiteit, Amsterdam

Preface

Asso­cia­tions

Chalkopyrit, Bornit, Galenit, Wismut, Silber, Dyskrasit, Gudmundit, Tetrahedrit

Name from

Dr. Cornelius Kieft (*1924), Erzmineraloge

Author (Name, Year)

Dobbe & Lustenhouwer & Zakrzewski & Goubitz & Fraanje & Schenk, 1994

References

Canadian Mineralogist 32 (1994), 179

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Kieftite

CoSb3

kubisch : m3 : Im3

2.EC.05

Skutterudite

CoAs3

kubisch : m3 : Im3

2.EC.05

Ferroskutterudite

FeAs3

kubisch : m3 : Im3

2.EC.05

Nickelskutterudite

(Ni,Co,Fe)As3

kubisch : m3 : Im3

2.EC.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Ferroskutterudite

FeAs3

kubisch : m3 : Im3

II/D.29-005

Skutterudite

CoAs3

kubisch : m3 : Im3

II/D.29-010

Nickelskutterudite

(Ni,Co,Fe)As3

kubisch : m3 : Im3

II/D.29-020

Kieftite

CoSb3

kubisch : m3 : Im3

II/D.29-025

'Iridisite'

(Ir,Cu,Rh)S2

kubisch : m3 : Pa3

II/D.29-030

Gaotaiite

Ir3Te8

kubisch : m3 : Pa3

II/D.29-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Skutterudite

CoAs3

kubisch : m3 : Im3

2.EC.100

Kieftite

CoSb3

kubisch : m3 : Im3

2.EC.110

Nickelskutterudite

(Ni,Co,Fe)As3

kubisch : m3 : Im3

2.EC.120

Ferroskutterudite

FeAs3

kubisch : m3 : Im3

2.EC.130

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Krennerite

Au3AgTe8

orthorhombisch : mm2 : Pma2

02.12.13.01

Calaverite

AuTe2

monoklin : 2/m : C2/m

02.12.13.02

Sylvanite

AgAuTe4

monoklin : 2/m : P2/c

02.12.13.03

Kostovite

CuAuTe4

orthorhombisch : mm2 : Pma2

02.12.13.04

Melonite

NiTe2

trigonal : 3m : P3m1

02.12.14.01

Kitkaite

NiTeSe

trigonal : 3m : P3m1

02.12.14.02

Moncheite

(Pt,Pd)(Te,Bi)2

trigonal : 3m : P3m1

02.12.14.03

Merenskyite

PdTe2

trigonal : 3m : P3m1

02.12.14.04

Shuangfengite

IrTe2

trigonal : 3m : P3m1

02.12.14.06

Sudovikovite

PtSe2

trigonal : 3m : P3m1

02.12.14.07

Froodite

PdBi2

monoklin : 2/m : C2/m

02.12.15.01

Urvantsevite

Pd(Bi,Pb)2

tetragonal : 4/mmm : I4/mmm

02.12.15.02

Verbeekite

PdSe2

monoklin : 2/m, 2, m : C2/m, C2, Cm

02.12.15.03

Borishanskiite

Pd(As,Pb)2

orthorhombisch : mm2 : Ccm21

02.12.16.01

Skutterudite

CoAs3

kubisch : m3 : Im3

02.12.17.01

Nickelskutterudite

(Ni,Co,Fe)As3

kubisch : m3 : Im3

02.12.17.02

Kieftite

CoSb3

kubisch : m3 : Im3

02.12.17.03

Rheniite

ReS2

triklin : 1 : P1

02.12.18.01

Other languages

German

Kieftit

Spanish

Kieftita

French

Kieftite

English

Kieftite

Russian

Кифтит

IMA Number

IMA 1991-052

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Kieftit
Google-Bilder-Suche - search for: Kieftit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Kieftit

English pages

Mindat - search for: Kieftite
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Handbook-of-Mineralogy - search for: Kieftite
RRUFF - Raman, XRD and other mineral data - search for: Kieftite
RRUFF - References and PDF downloads - search for: Kieftite
American-Mineralogist-Crystal-Structure-Database - search for: Kieftite
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Russian pages

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German pages

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