Eskebornite

(repeating unit)CuFeSe2IMA symbolEbn[1]Strunz classification2.CB.10aDana classification2.9.1.2Crystal classTetragonalIdentificationColorBrassy yellowCrystal habitThick tabular crystals, massiveCleavage{001} perfectMohs scale hardness3–3.5LusterMetallicStreakBlackDiaphaneityOpaqueDensity5.35 (measured) 5.44 (calculated)PleochroismCreamy yellow to yellowish brownUltraviolet fluorescenceNoneSolubilityInsolubleCommon impuritiesAg, SOther characteristicsDistinctly magneticReferences[1][2][3][4]

Eskebornite is a selenide mineral with the formula CuFeSe2.[2][3] It crystallizes in the tetragonal system and it has a brassy colour. Eskebornite is sometimes found as thick tabular crystals, but is more often found intergrown with other selenides.[4] It is part of the chalcopyrite group and forms a series with chalcopyrite.[5]

Occurrence

Eskebornite was first identified in 1949 by Paul Ramdohr in the Eskaborn Adit, Tilkerode (Abberode), Harz, Saxony-Anhalt, Germany,[6] which it was also named after. It is often found with other selenides, including clausthalite, tiemannite, berzelianite, naumannite, umangite, geffroyite, and chaméanite, but also with other minerals like chalcopyrite, uraninite, ankerite, and dolomite.[4]

See also

References

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ "Eskebornite: Eskebornite mineral information and data". www.mindat.org. Retrieved 2016-10-24.
  3. ^ Barthelmy, Dave. "Eskebornite Mineral Data". webmineral.com. Retrieved 2016-10-24.
  4. ^ a b "Handbook of Mineralogy, Eskebornite" (PDF).
  5. ^ "Chalcopyrite-Eskebornite Series: Chalcopyrite-Eskebornite Series mineral information and data". www.mindat.org. Retrieved 2016-10-24.
  6. ^ D.C. Harris, E.A.J. Burke. "Eskebornite, two Canadian occurrences" (PDF). The Canadian Mineralogist. 10: 786–796.


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