Record details

Title
    Duhamelite discredited
Statement of responsibility
    Werner Krause, Uwe Kolitsch, Heinz-Jürgen Bernhardt, Herta Effenberger
Author
    Bernhardt, Heinz-Jürgen
    Effenberger, Herta
    Kolitsch, Uwe
    Krause, Werner
Language
    anglicky
Source title - serial
    Neues Jahrbuch für Mineralogie. Monatshefte
Vol./nr.
    H. 2
Pages
    s. 75-96
Year
    2003
Notes
    5 obr., 1 fot., 7 tab., 3 s. bibl.
    il.
    Zkr. název ser.: Neu. Jb. Mineral., Mh.
Subject group
    bizmut
    chemismus minerálů
    descloizit
    diskreditace
    exemplář typový
    krystalochemie
    mřížkové parametry
    vanadáty
    zpřesňování struktury
Geographical name
    ČR-Čechy
    Demokratická republika Kongo
    Jáchymov (Karlovy Vary)
    Mexiko
    Namibie
    USA-Arizona
Keyword
    Discredited
    Duhamelite
Abstract (in english)
   Reinvestigation of duhamelite, originally described as Cu4Pb2Bi(VO4)4 (OH)3 _ 8H2O, has demonstrated that it is not a valid independent mineral species. Analyses of the type material and of additional samples by means of electron mi-croprobe, X-ray powder and single-crystal diffractometry including structure refinements, and transmission electron microscopy have shown that duhamelite belongs to the adelite-descloizite-group with the general formula AB(XO4)(OH). Duhamelite in the strict sense corresponds to a bismuth- and calcium-bearing mottramite; the empirical formula of the type material is (Pb0.49Bi0.36Ca0.12)sigma0.97Cu1.01[(VO4)0.85(AsO4)0.08(SiO4)0.07]sigma1.00[O0.27(OH)0.71]sigma0.98 (based on 5 oxygen atoms per formula unit), or simplified (Pb,Bi,Ca)Cu(VO4)(OH,O). The formal discreditation of duhamelite has been approved by the Commission on New Minerals and Mineral Names, I.M.A
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    11. 7. 2007
Import date
    8. 8. 2012