Age and sulphur isotope signatures of Brazilian and Colombian emeralds Septimo congreso geologico chileno /Giuliani, Gaston Cheilletz, A. Féraud, G. Zimmermann, J.L. Carrillo, V. Rueda, F.O. Baker, J. Montigny, R. GEOCHIMIE GITOLOGIE COMPOSITION CHIMIQUE SULFURE ISOTOPE DATATION ABSOLUE EMERAUDE COMPOSITION ISOTOPIQUE Universidad de Concepcion 1994 text https://www.documentation.ird.fr/hor/fdi:41487 fdi:41487 Giuliani Gaston, Cheilletz A., Féraud G., Zimmermann J.L., Carrillo V., Rueda F.O., Baker J., Montigny R.. Age and sulphur isotope signatures of Brazilian and Colombian emeralds. In : . Septimo congreso geologico chileno Universidad de Concepcion, 1994, 1491-1495 Congreso Geologico Chileno, 7., Concepcion (CHL), 1994 EN BRESIL COLOMBIE