@article{fdi:010019277,
  title = {{A} {B}rasiliano age (500 +/- {M}a) for the mina {III} gold deposit, {C}rixas {G}reenstone belt, {C}entral {B}razil},
  author = {{F}ortes {P}. de {T}arso {F}erro de {O}liveira and {G}iuliani, {G}aston and {F}{\'e}raud, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{K}-{A}r and 40{A}r/39{A}r geochronological studies were performed on selected minerals from the {M}inna {III} gold deposit, {C}rixas greenstone belt, state of {G}oias, central {B}razil. {T}hey include amphibole and biotite from amphibole schists ; biotite from quartz-chlorite-carbonate-muscovite schists ; chloritoid, muscovite, and paragonite from muscovite schists ; and biotite from biotite-marbles. {A}nalyses yielded ages between 750 and 500 {M}a, indicating that the {B}rasiliano orogenic event affected rocks of the {A}rchean greenstone belt. {I}t is proposed that the gold mineralization, closely related to a post-metamorphic peak hydrothermal alteration and spatially associated with muscovite schists, is 505 +/- 10 {M}a, whereas older ages may indicate an excess of argon. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{MINERAI} {METALLIQUE} ; {OR} ; {MINE} ; {GEOCHRONOLOGIE} ; {DATATION} ; {ISOTOPE} {RADIOACTIF} ; {MINERALISATION} ; {METAMORPHISME} ; {SCHISTE} ; {AMPHIBOLE} ; {BRESIL} ; {GOIAS} ; {CRIXAS}},
  booktitle = {},
  journal = {{I}nternational {G}eology {R}eview},
  volume = {39},
  numero = {},
  pages = {449--460},
  ISSN = {0020-6814},
  year = {1997},
  URL = {https://www.documentation.ird.fr/hor/fdi:010019277},
}