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@ARTICLE{Renik:838083,
      author       = {Rečnik, Aleksander and Zavašnik, Janez and Jin, Lei and
                      Čobić, Andrea and Daneu, Nina},
      title        = {{O}n the origin of iron-cross twins of pyrite from {M}t.
                      {K}atarina, {S}lovenia},
      journal      = {Mineralogical magazine},
      volume       = {80},
      number       = {6},
      issn         = {0026-461X},
      address      = {Twickenham},
      publisher    = {Mineralogical Society of Great Britain and Ireland},
      reportid     = {FZJ-2017-100006},
      pages        = {937 - 948},
      year         = {2016},
      abstract     = {Iron-cross twins of pyrite are well known among
                      mineralogists, however it is quite surprising that the
                      conditions of their formation remain unexplored. To address
                      this question we studied pyrite twins from the Upper Permian
                      silts of Mt. Katarina near Ljubljana (Slovenia), which
                      represent one of the most typical geological environments
                      for twinned pyrite. Mineralization of pyrite starts with a
                      reduction of the primary red-coloured hematite-rich sediment
                      by sulfide-rich fluids that penetrated the strata. A short
                      period of magnetite crystallization is observed prior to
                      pyrite crystallization, which indicates a gradual reduction
                      process. Sulfur isotope analysis of pyrite shows an
                      enrichment in δ34S, suggesting its origin from the
                      neighbouring red-bed deposit. Other sulfides, such as
                      chalcopyrite and galena, formed at the end of pyrite
                      crystallization. Remnants of mineralizing fluids trapped at
                      the interfaces between the inclusions and host pyrite show
                      trace amounts of Pb and Cu, indicating their presence in the
                      solutions throughout the period of pyrite crystallization.
                      An electron microscopy and spectroscopy study of twin
                      boundaries showed that interpenetration twinning is
                      accomplished through a complex 3D intergrowth of primary
                      {110} Cu-rich twin boundaries, and secondary {100}
                      boundaries that are pure. We show that approximately one
                      monolayer of Cu atoms is necessary to stabilize the {110}
                      twin structure. When the source of Cu is interrupted, the
                      two crystal domains continue to form {100} interfaces, that
                      are more favourable for pure pyrite.},
      cin          = {ER-C-1},
      ddc          = {550},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000391201100002},
      doi          = {10.1180/minmag.2016.080.073},
      url          = {https://juser.fz-juelich.de/record/838083},
}