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Eskebornite

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Formula:
CuFeSe2
Colour:
Brass yellow
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
5.35
Crystal System:
Tetragonal
Name:
For the type locality
Hide all sections | Show all sections

Classification of EskeborniteHide

Approved, 'Grandfathered' (first described prior to 1959)
2.CB.10a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2.9.1.2

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.1.33

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu

Physical Properties of EskeborniteHide

Metallic
Transparency:
Opaque
Colour:
Brass yellow
Comment:
Tarnishes dark brown to black
Streak:
Black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN15=155 - 252 kg/mm2 - Vickers
Cleavage:
Perfect
on {001}
Density:
5.35 g/cm3 (Measured)    5.44 g/cm3 (Calculated)

Optical Data of EskeborniteHide

Type:
Anisotropic
Anisotropism:
Marked - yellowish to tan
Colour in reflected light:
brown-yellow or cream-yellow sometimes with orange tint
Pleochroism:
Weak
Comments:
Creamy yellow to yellowish brown

Chemical Properties of EskeborniteHide

Formula:
CuFeSe2

Crystallography of EskeborniteHide

Crystal System:
Tetragonal
Morphology:
Thick tabular crystals to 1mm

Type Occurrence of EskeborniteHide

Place of Conservation of Type Material:
Harvard University

Other Language Names for EskeborniteHide

German:Eskebornit
Simplified Chinese:硒黄铜矿
Spanish:Eskebornita
Traditional Chinese:硒黃銅礦

Relationship of Eskebornite to other SpeciesHide

Other Members of this group:
ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
GalliteCuGaS2Tet. 4 2m : I4 2d
LaforêtiteAgInS2Tet. 4 2m : I4 2d
LenaiteAgFeS2Tet. 4 2m : I4 2d
RoquesiteCuInS2Tet. 4 2m : I4 2d
ShenzhuangiteNiFeS2Tet. 4 2m : I4 2d
Forms a series with:

Common AssociatesHide

AnkeriteCa(Fe2+,Mg)(CO3)2
BerzelianiteCu2Se
ChalcopyriteCuFeS2
Chaméanite(Cu,Fe)4As(Se,S)4
ClausthalitePbSe
DolomiteCaMg(CO3)2
Geffroyite(Cu,Fe,Ag)9(Se,S)8
NaumanniteAg2Se
NaumanniteAg2Se
TiemanniteHgSe
UraniniteUO2
Associated Minerals Based on Photo Data:
Geffroyite3 photos of Eskebornite associated with Geffroyite on mindat.org.
Uraninite3 photos of Eskebornite associated with Uraninite on mindat.org.
Berzelianite2 photos of Eskebornite associated with Berzelianite on mindat.org.
Bukovite2 photos of Eskebornite associated with Bukovite on mindat.org.
Umangite2 photos of Eskebornite associated with Umangite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.CB.AgmantiniteAg2MnSnS4Orth.
2.CB.05aColoradoiteHgTeIso. m3m (4/m 3 2/m)
2.CB.05aHawleyiteCdSIso. 4 3m : F4 3m
2.CB.05aMetacinnabarHgSIso. 4 3m : F4 3m
2.CB.05cPolhemusite(Zn,Hg)STet.
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4 Iso.
2.CB.05aSphaleriteZnSIso. 4 3m : F4 3m
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)SIso. 4 3m : F4 3m
2.CB.10aChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.CB.10aGalliteCuGaS2Tet. 4 2m : I4 2d
2.CB.10bHaycockiteCu4Fe5S8Orth. 2 2 2
2.CB.10aLenaiteAgFeS2Tet. 4 2m : I4 2d
2.CB.10bMooihoekiteCu9Fe9S16Tet.
2.CB.10bPutoraniteCu1.1Fe1.2S2Iso.
2.CB.10aRoquesiteCuInS2Tet. 4 2m : I4 2d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m
2.CB.10aLaforêtiteAgInS2Tet. 4 2m : I4 2d
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
2.CB.15aFerrokesteriteCu2(Fe,Zn)SnS4Tet. 4 : I4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4Tet. 4 2m : I4 2m
2.CB.15aIdaiteCu5FeS6Hex.
2.CB.15aKesterite Cu2ZnSnS4Tet. 4 : I4
2.CB.15aKuramiteCu3SnS4Tet.
2.CB.15bMohiteCu2SnS3Mon.
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 4 2m : I4 2m
2.CB.15cStannoiditeCu+6Cu2+2(Fe2+,Zn)3Sn2S12Orth.
2.CB.15aVelikiteCu2HgSnS4Tet.
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8Tet. 4 2m : P4m2
2.CB.20MawsoniteCu6Fe2SnS8Tet. 4 2m : P4m2
2.CB.30ColusiteCu12VAs3S16Iso. 4 3m : P4 3n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 4 3m : P4 3n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso.
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32Iso.
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso.
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso.
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8Iso.
2.CB.35aKiddcreekiteCu6SnWS8Iso. 4 3m : F4 3m
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4Iso.
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 4 2m : P4 2c
2.CB.35aVincienniteCu+7Cu2+3Fe2+2Fe3+2Sn(As,Sb)S16Tet.
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4Iso.
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.40LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.55aCubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.55bIsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
2.CB.60PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.CB.60RaguiniteTlFeS2Orth.
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.70SulvaniteCu3VS4Iso.
2.CB.75VulcaniteCuTeOrth.
2.CB.80EmpressiteAgTeOrth. mmm (2/m 2/m 2/m)
2.CB.85MuthmanniteAuAgTe2Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

2.9.1.1ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.9.1.3GalliteCuGaS2Tet. 4 2m : I4 2d
2.9.1.4RoquesiteCuInS2Tet. 4 2m : I4 2d
2.9.1.5LenaiteAgFeS2Tet. 4 2m : I4 2d

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.1.1ChalcociteCu2SMon. 2/m : P21/b
3.1.2DjurleiteCu31S16Mon. 2/m
3.1.3DigeniteCu9S5Trig. 3m (3 2/m) : R3m
3.1.4AniliteCu7S4Orth. mmm (2/m 2/m 2/m) : Pnma
3.1.5RoxbyiteCu9S5Tric. 1 : P1
3.1.6SpionkopiteCu39S28Trig.
3.1.7GeeriteCu8S5Trig. 3
3.1.8CovelliteCuSHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.9BerzelianiteCu2SeIso. m3m (4/m 3 2/m) : Fm3m
3.1.10BellidoiteCu2SeTet. 4/m : P42/n
3.1.11UmangiteCu3Se2Tet.
3.1.12YarrowiteCu9S8Trig.
3.1.13AthabascaiteCu5Se4Orth.
3.1.14KlockmanniteCuSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.15Krut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
3.1.16WeissiteCu2-xTeHex.
3.1.17RickarditeCu7Te5Orth.
3.1.18VulcaniteCuTeOrth.
3.1.19BambollaiteCu(Se,Te)2Tet.
3.1.20LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
3.1.21MgriiteCu3AsSe3
3.1.22CubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
3.1.23BorniteCu5FeS4Orth. mmm (2/m 2/m 2/m) : Pbca
3.1.24FukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
3.1.25ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
3.1.26MooihoekiteCu9Fe9S16Tet.
3.1.27HaycockiteCu4Fe5S8Orth. 2 2 2
3.1.28IsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
3.1.29IdaiteCu5FeS6Hex.
3.1.30NukundamiteCu3.4Fe0.6S4Trig. 3m (3 2/m) : P3m1
3.1.31PutoraniteCu1.1Fe1.2S2Iso.
3.1.32Orickite2CuFeS2 · H2OHex.
3.1.34Chaméanite(Cu,Fe)4As(Se,S)4Iso.
3.1.35TalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m

Other InformationHide

Notes:
Distinctly magnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EskeborniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Harris, D.C., Burke, E.A.J. (1971) Eskebornite, two Canadian Occurrences. The Canadian Mineralogist: 10: 787-796.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 1552-1561.
Jambor, J.L., Burke, E.A.J. (1989) New mineral names. American Mineralogist: 74: 1399-1404.
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.

Internet Links for EskeborniteHide

Localities for EskeborniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Argentina
 
  • La Rioja
    • General Lamadrid department
      • Villa Castelli
        • Sierra de Cacho
Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); de Brodtkorb, M. K., & Crosta, S. (2010). Reseña de la ubicación geográfica de los seleniuros de la Sierra de Umango, provincia de La Rioja. Revista de la Asociación Geológica Argentina, 67(2), 272-279.
    • Vinchina Department
Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325; de Brodtkorb, M. K.; Gay, H. D.; Sureda, R. J. (1993): Polymetallic selenide-sulfide minerals of the Los Llantenes mining district, La Rioja, Argentina. Maurice, Yvon T. (Ed.), Proc. 8th Quadrenn. IAGOD Symp., 119-125.
  • Mendoza
    • Luján de Cuyo department
      • Cacheuta
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Australia
 
  • Northern Territory
    • West Arnhem Region
      • South Alligator River
        • Rockhole area
Rajesh, H.M. (2008): Ore Geology Reviews 33, 382-396.
Bolivia
 
  • Potosí Department
    • Antonio Quijarro Province
[MinRec 21:133]
Bulgaria
 
  • Haskovo Oblast (Khaskovo Oblast)
    • Ivaylovgrad Obshtina
      • Ivaylovgrad
T. Kerestedjian (1997) Argentonentlandite (Fe, Ni)8+хАg1-xS8 from Kamilski dol – a new mineral species for Bulgaria. Review of the Bulgarian Geological Society 58:15-18
Canada
 
  • Saskatchewan
    • Beaverlodge Lake area
Can Min 10:787-796
Econ Geol (1997) 92:468-484; Canadian Mineralogist Vol. 10, pp.787-796 (1972)
China
 
  • Hubei Province
    • Enshi Autonomous Prefecture (E'xi Autonomous Prefecture)
      • Enshi Co.
Caixia Feng, Jiajun Liu, and Shen Liu (2002): Mineral Deposits 21(suppl.), 812-815; Hanjie Wen, Carignan, J., Yuzhuo Qiu, and Shirong Liu (2006): Environmental Science and Technology 40(4), 1126-1132
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
Strübel, Zimmer: "Lexikon der Minerale", 2nd Ed., 1991; Econ Geol (1997) 92:468-484
    • Plzeň Region
      • Planá u Mariánských Lázní (Plan)
Scharmová, M., Scharm, B.: Minerály selenu na uranovém ložisku Zadní Chodov. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 43-47.
      • Rožmitál pod Třemšínem
        • Nové Mitrovice
Scharm, B. & Scharmová, M. (2000) Accessory minerals of siliceous rocks from the Kokšín hill near Mítov (Barrandian Neoproterozoic). Bulletin of Geosciences, 75(3), 307-318.
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Žďár nad Sázavou
        • Rožná deposit
Vavřín, I.: Nové poznatky o selenidech Českého masívu. Bulletin Mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 82-89. ; Econ Geol (1997) 92:468-484
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38. ; Econ Geol (1997) 92:468-484
Vavřín, I.: Nové poznatky o selenidech Českého masívu. Bulletin Mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 82-89.
      • Žďár nad Sázavou District
        • Nové Město na Moravě
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38. ; Econ Geol (1997) 92:468-484
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38.
        • Žďár nad Sázavou
Kvaček, M.: Selenides from the deposits of Western Moravia, Czechoslovakia – Part II. Acta Universitatis Carolinae – Geologica, 1979, vol. 23, nos. 1-2, s. 15-38.
France
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Sauxillanges
        • Chaméane
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ Geol (1997) 92:468-484
Germany
 
  • Lower Saxony
    • Harz
      • Lerbach
Weiss: "Mineralfundstellen, Deutschland West", 1990
  • Saxony-Anhalt
    • Harz
Tischendorf, G. (1969). Sources of elements in selenide mineralization near Tilkerode (Harz). International Geology Review, 11(11), 1298-1301.
NJMM (1988), 337
  • Saxony
    • Erzgebirge
      • Schlema-Hartenstein District
        • Alberoda
          • Shaft 366
The Canadian Mineralogist, V 42, 2004, pp. 1719-1732.
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Kłodzko District
Econ Geol (1997) 92:468-484; Pringle, G. J., & Thorpe, R. I. (1980). Bohdanowiczite, junoite and laitakarite from the Kidd Creek mine, Timmins, Ontario. The Canadian Mineralogist, 18(3), 353-360.
USA
 
  • Colorado
    • Garfield Co.
      • East Rifle Creek area
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
  • Nevada
    • Elko Co.
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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