Parajamesonite revisited: Background of the discreditation of an enigmatic mineral species

Gábor Papp, Alan J. Criddle, Chris J. Stanley, László Kriston, Géza Nagy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Original parajamesonite samples of Zsivny & Náray-Szabó (1947) and other authentic museum specimens containing the same material were studied by ore microscopy, electron probe microanalysis (EPMA) and X-ray powder diffraction (XRPD). The "parajamesonite crystals" proved to be pseudomorphs built of polycrystalline aggregates of euhedral jamesonite, sometimes intergrown with argentian tetrahedrite (freibergite) and/or ramdohrite. Other associated minerals are "plumosite", i.e. fibrous jamesonite (rarely with boulangerite), iron-rich sphalerite, siderite, pyrrhotite, semseyite, a fizélyite-related mineral, and galena. All XRPD patterns correspond to jamesonite, without any similarity to the original pattern of parajamesonite. All these data prove that parajamesonite is actually jamesonite, permitting to discredit definitively parajamesonite as a mineral species.

Original languageEnglish
Pages (from-to)495-502
Number of pages8
JournalSwiss Journal of Geosciences
Volume100
Issue number3
DOIs
Publication statusPublished - Dec 1 2007

Keywords

  • Electron microprobe
  • Herja
  • Jamesonite
  • Parajamesonite
  • X-ray powder diffraction

ASJC Scopus subject areas

  • Geology

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