Four Treasures Reference Database
Record No. 6063
The chemical signature of emeralds from the Campos Verdes-Santa Terezinha Mining District, Goiás, Brazil
Journal Article
Pulz, G.M., Silva, L.J.H.d.e.-R., Neto, L.S.B., Brum, T.M.M., Juchem, P.L., Santos, C.A., Pereira, V.P. and Silva, J.J. (1998) The chemical signature of emeralds from the Campos Verdes-Santa Terezinha Mining District, Goiás, Brazil. Journal of Gemmology, Vol. 26, No. 4, October, pp. 252–261.
ISBN/ISSN: 221252 | Sinkankas/Born No.: NIS / NIB | RWHL
gems, beryl, emerald, Brazil, inclusions
Emerald crystals from the Campos Verdes mining district have been analysed by inductively coupled plasma mass spectrometry (ICP-MS), Fourier transform infrared spectroscopy and Mössbauer 2+ 3+ spectroscopy. These gems contain measurable amounts of Fe , Fe , Cr, V, Sc, Ni and Zn; large-ion lithophile element (LILE, Ba, Sr, Rb, Pb) and high field strength element (HFSE, Zr, Y, Ti) contents are near or below the limit of detection. This chemical signature reflects the metasomatic reactions between the mineralizing fluids and the ultrabasic host-rocks of this gem deposit.