Header
Accueil du site > Publications > Fingerprinting Paranesti rubies through oxygen isotopes

Fingerprinting Paranesti rubies through oxygen isotopes

Wang, K.K. ; Graham, I.T. ; Martin, L. ; Voudouris, P. ; Giuliani, G. ; Lay, A. ; Harris, S.J. ; Fallick, A., Minerals

Fingerprinting Paranesti rubies through oxygen isotopes

Wang, K.K. ; Graham, I.T. ; Martin, L. ; Voudouris, P. ; Giuliani, G. ; Lay, A. ; Harris, S.J. ; Fallick, A.

Minerals, 2019, 9, 91, 1-14

In this study, the oxygen isotope (d18O) composition of pink to red gem-quality rubies from Paranesti, Greece was investigated using in-situ secondary ionization mass spectrometry (SIMS) and laser-fluorination techniques. Paranesti rubies have a narrow range of d18O values between 0 and +1h and represent one of only a few cases worldwide where d18O signatures can be used to distinguish them from other localities. SIMS analyses from this study and previous work by the authors suggests that the rubies formed under metamorphic/metasomatic conditions involving deeply penetrating meteoric waters along major crustal structures associated with the Nestos Shear Zone. SIMS analyses also revealed slight variations in d18O composition for two outcrops located just 500 m apart : PAR-1 with a mean value of 1.0h +- 0.42h and PAR-5 with a mean value of 0.14h +- 0.24h. This work adds to the growing use of in-situ methods to determine the origin of gem-quality corundum and re-confirms its usefulness in geographic “fingerprinting”.

Voir en ligne : https://www.mdpi.com/2075-163X/9/2/91




publié mardi 5 février 2019