Record details

    Poorly crystalline Pd-Hg-Au intermetallic compounds from Córrego Bom Sucesso, southern Serra do Espinhaço, Brazil
Other titles
    Pd-Hg-Au intermetalické sloučeniny z Córrego Bom Sucesso, jižní Serra do Espinhaço, Brazílie.
    Cabral, Alexandre
    Haloda, Jakub
    Kwitko-Ribeiro, R.
    Laufek, František
    Lehmann, B.
    Tupinambá, M.
    Vlček, V.
    Vymazalová, Anna
Publication type
    článek v periodiku
Source title - serial
    European Journal of Mineralogy
    Roč. 21, č. 4
Thesaurus term
    auriferous PdHg, auriferous Pd3Hg2, electron-microprobe analysis, electron-backscattered diffraction, Córrego Bom Sucesso, Serro, Minas Gerais, Brazil
Abstract (in english)
   Potarite, ideally PdHg, is reported in the literature to have compositions varying from PdHg or Pd(Hg,Au) to Pd3Hg2. Such a Pd3Hg2 phase is unknown in the Pd-Hg binary system. For the first time, Pd-Hg grains recovered from the historical Bom Sucesso alluvium, regarded as the type locality of Pd, are shown to consist of arborescent and lamellar zones of two intermetallic compounds, compositionally close to empirical Pd(Hg,Au), i.e., auriferous potarite, and (Pd,Au)3Hg2. The Pd-Hg-Au grains have a rim of palladiferous Pt. Both the Pd-Hg-Au compounds and the palladiferous Pt rim did not diffract using the electron-backscattered diffraction (EBSD) and powder X-ray microdiffraction techniques, suggesting that they are poorly crystalline.
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
Import date
    15. 10. 2014