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Eskebornite

Pictures (2 Images total)

Eskebornit
Views (Image: 1467202710): 933
Eskebornit (SNr: A000490)

von der Mina El Dragon bei Potosi in Bolivien; derbe broncefarbene Kruste; BB = 2,3 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Peter Köhlen
Contribution: Münchener Micromounter 2016-06-29
Locality: El Dragón Mine / Antonio Quijarro, Provinz / Potosi, Departamento / Bolivien
Hansblockit, Eskebornit
Views (Image: 1479807587): 924
Hansblockit, Eskebornit (SNr: BM 2015, 136)

Hansblockit, Eskebornit, Clausthalit, Klockmannit, Eldragónit, Krut'ait, Petrovicit von der El Dragón Mine in Bolivien. Polierter Anschliff im Auflicht-Hellfeld-Mikroskop; Bildbreite 0,2 mm; An den...

Collection: Natural History Museum, London
Copyright: Günter Grundmann
Contribution: Günter Grundmann 2016-11-22
Locality: El Dragón Mine / Antonio Quijarro, Provinz / Potosi, Departamento / Bolivien

Collectors Summary

Color braun-gelb oder cremfarben-gelb, manchmal mit einem orangen Farbton
Streak color schwarz
Hardness (Mohs) 3 - 3.5
Crystal System tetragonal, P42c

Chemism

Chem­ical formula

CuFeSe2

Chem­ical com­po­si­tion

Eisen, Kupfer, Selen

Unit weight: 277.3175 u; Number of atoms in the formula: 4

Info

Empirical formula:

CuFeSe2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Iron

Fe

20.14

1

25.00

55.8452000

55.8452000

Copper

Cu

22.91

1

25.00

63.5463000

63.5463000

Selenium

Se

56.95

2

50.00

78.9630000

157.9260000

Anal­y­sis wt%

Ø Cu : 23.62, Fe : 19.75, Se : 55.96 (Ref: Canadian Mineralogist 71)

Strunz 9th edi­tion incl. updates

2.CB.10

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
10:Chalkopyrit-Gruppe

Lapis Clas­sifica­tion

II/C.03-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
3: Chalkopyrit-Gruppe

Clas­sifica­tion by Hölzel

2.CB.210

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
2: Chalcopyrite-Group

Dana 8th edi­tion

02.09.01.02

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
01: Chalcopyrite Group (Tetragonal: I-42d)

IMA sta­tus

anerkannt, pre IMA, vererbt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Chalcopyrite group

Optical Properties

Color

braun-gelb oder cremfarben-gelb, manchmal mit einem orangen Farbton

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

112

Space Group

P42c

Cell param­e­ters a (Å)

5.518

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

11.048

Cell param­e­ters a/b or c/a

2.002

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

336.393

X-Ray Pow­der Diffrac­tion

5.53(80),
3.17(100),
2.459(80),
1.945(90),
1.662(80),
1.380(70),
1.266(70),
1.126(70)

XRD chart Eskebornite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3 - 3.5

VHN (Hard­ness Vick­ers)

147 (50g)

Density (g/cm³)

5.35

5.475 ( ρ calc. Mineralienatlas )

Preface

Name from

Typlokalität (Eskaborner Stolln)

Author (Name, Year)

Ramdohr, 1949

References

Strunz Mineralogical Tables 9. Edition

American Mineralogist (1972): 57: 1560.

American Mineralogist (1989): 74: 1403.

Delgado, J.M., Diaz De Delgado, G., Quintero, M., and Wooley, J.C. (1992) The crystal structure of copper iron selenide, CuFeSe2. Mater. Research Bulletin: 27(3): 367-373.

IMA group assignments

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

Gallite

CuGaS2

tetragonal : 42m : I42d

2.CB.10

Lenaite

AgFeS2

tetragonal : 42m : I42d

2.CB.10

Roquesite

CuInS2

tetragonal : 42m : I42d

2.CB.10

Haycockite

Cu4Fe5S8

2.CB.10

Putoranite

Cu1.1Fe1.2S2

kubisch : m3m

2.CB.10

Talnakhite

Cu9(Fe,Ni)8S16

kubisch : 43m : I43m

2.CB.10

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

2.CB.10

Laforêtite

AgInS2

tetragonal : 42m : I42d

2.CB.10

Mooihoekite

Cu9Fe9S16

tetragonal : 42m : P42m

2.CB.10

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

2.CB.10

Shenzhuangite

NiFeS2

tetragonal : 42m : I42d

2.CB.10

'Isochalcopyrite'

CuFeS2

kubisch : 43m : I43m

2.CB.10

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

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

II/C.03-010

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

II/C.03-020

Lenaite

AgFeS2

tetragonal : 42m : I42d

II/C.03-025

Gallite

CuGaS2

tetragonal : 42m : I42d

II/C.03-030

Roquesite

CuInS2

tetragonal : 42m : I42d

II/C.03-040

Laforêtite

AgInS2

tetragonal : 42m : I42d

II/C.03-050

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

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

2.CB.200

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

2.CB.210

Gallite

CuGaS2

tetragonal : 42m : I42d

2.CB.230

Roquesite

CuInS2

tetragonal : 42m : I42d

2.CB.250

Laforêtite

AgInS2

tetragonal : 42m : I42d

2.CB.260

Lenaite

AgFeS2

tetragonal : 42m : I42d

2.CB.270

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

Chalcopyrite

CuFeS2

tetragonal : 42m : I42d

02.09.01.01

Eskebornite

CuFeSe2

tetragonal : 42m : P42c

02.09.01.02

Gallite

CuGaS2

tetragonal : 42m : I42d

02.09.01.03

Roquesite

CuInS2

tetragonal : 42m : I42d

02.09.01.04

Lenaite

AgFeS2

tetragonal : 42m : I42d

02.09.01.05

Laforêtite

AgInS2

tetragonal : 42m : I42d

02.09.01.06

Stannite

Cu2FeSnS4

tetragonal : 42m : I42m

02.09.02.01

Černýite

Cu2CdSnS4

tetragonal : 42m : I42m

02.09.02.02

Briartite

Cu2(Zn,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.03

Kuramite

Cu3SnS4

tetragonal : 42m : I42m

02.09.02.04

Sakuraiite

(Cu,Zn,Fe)3(In,Sn)S4

02.09.02.05

Hocartite

Ag2FeSnS4

tetragonal : 42m : I42m

02.09.02.06

Pirquitasite

Ag2ZnSnS4

tetragonal : 42m, 4 : I42m, I4

02.09.02.07

Velikite

Cu2(Hg,Zn)SnS4

tetragonal : 4 : I4

02.09.02.08

Kësterite

Cu2(Zn,Fe)SnS4

tetragonal : 4 : I4

02.09.02.09

Ferrokësterite

Cu2FeSnS4

tetragonal : 4 : I4

02.09.02.10

Barquillite

Cu2(Cd,Fe)GeS4

tetragonal : 42m : I42m

02.09.02.11

Chatkalite

Cu6Fe2+Sn2S8

tetragonal : 42m : P4m2

02.09.03.02

Stannoidite

Cu8(Fe,Zn)3Sn2S12

orthorhombisch : 222 : I222

02.09.03.03

Renierite

(Cu,Zn)11(Ge,As)2Fe4S16

tetragonal : 42m : P42c

02.09.04.01

Germanite

Cu13Fe2Ge2S16

kubisch : 43m : P43n

02.09.04.02

Maikainite

Cu10Fe3MoGe3S16

02.09.04.03

Ovamboite

Cu10Fe3WGe3S16

02.09.04.04

Morozeviczite

(Pb,Fe)3Ge1-xS4

02.09.05.01

Polkovicite

(Fe,Pb)3(Ge,Fe)1-xS4

02.09.05.02

Hemusite

Cu1+4Cu2+2SnMoS8

02.09.06.01

Kiddcreekite

Cu6SnWS8

02.09.06.02

Putoranite

Cu1.1Fe1.2S2

kubisch : m3m

02.09.07.01

Talnakhite

Cu9(Fe,Ni)8S16

kubisch : 43m : I43m

02.09.08.01

Haycockite

Cu4Fe5S8

02.09.08.02

Mooihoekite

Cu9Fe9S16

tetragonal : 42m : P42m

02.09.08.03

Raguinite

TlFeS2

monoklin : 2/m : C2/m

02.09.09.01

CNMNC symbol

Symbol

Ebn

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