Record details

Title
    THE SYSTEM Hg-Pt-Se AT 400°C: PHASE RELATIONS INVOLVING JACUTINGAITE
Author
    Cabral, Alexandre
    Drábek, Milan
    Vymazalová, Anna
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Canadian Mineralogist
Vol./nr.
    Roč. 50, č. 2
Pages
    6
Year
    2012
Thesaurus term
    phase relations, Hg-Pt selenides, system Hg-Pt-Se, jacutingaite, Pt amalgams
Keyword
    400°C
    Hg-Pt-Se
    INVOLVING
    JACUTINGAITE
    PHASE
    RELATIONS
    SYSTEM
Abstract (in english)
   Phase relations within the system Hg-Pt-Se were studied experimentally in the temperature range 400-800°C using the technique of evacuated silica-glass tubes. In this system, one ternary phase, Pt2HgSe3, jacutingaite, was recently described from the Caue iron-ore deposit, Minas Gerais, Brazil. At 400°C, the following assemblages are stable: PtSe2 + HgSe + (SeL), PtSe2 + Pt2HgSe3 + HgSe, PtSe2 + Pt2HgSe3 + Pt5Se4, Pt2HgSe3 + Pt5Se4 + (Pt), Pt2HgSe3 + HgPt + (PtHg)ss, Pt2HgSe3 + HgPt + Hg2Pt, Pt2HgSe3 + Hg2Pt + Hg4Pt, Pt2HgSe3 + Hg4Pt + HgSe, and Hg4Pt + HgSe + (Hgv). Below 250°C, the phase HgPt is not stable, and the low-temperature assemblage Pt2HgSe3 + Hg2Pt + (PtHg)ss appears in the system. The amalgams Hg2Pt and Hg4Pt are likely to be found in nature.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014