TY - JOUR
T1 - Trace element partitioning between silicate minerals and carbonatite at 25 kbar and application to mantle metasomatism
AU - Green, T. H.
AU - Adam, J.
AU - Siel, S. H.
PY - 1992/9
Y1 - 1992/9
N2 - Experiments at 25 kbar and 1000°C, on a model trace element-enriched carbonatite-eridotite mix, produced augite + pargasite ± garnet ± dolomite coexisting with a carbonatite melt. Proton microprobe analysis of the phases showed that key trace elements (Rb, Ba, Sr, Nb, Ta, Zr, Y and REE) all partitioned strongly into the melt (with the exception of Y, Ho and Lu in garnet), verifying that carbonatite is potentially a highly effective metasomatizing agent. The data also indicate that carbonatitic metasomatism will impart higher Ba/Rb, Ba/Nb, Nb/Ta, Sr/Ta, La/Ta, and lower Zr/Y, with little change to Sr/Nb, in affected mantle.
AB - Experiments at 25 kbar and 1000°C, on a model trace element-enriched carbonatite-eridotite mix, produced augite + pargasite ± garnet ± dolomite coexisting with a carbonatite melt. Proton microprobe analysis of the phases showed that key trace elements (Rb, Ba, Sr, Nb, Ta, Zr, Y and REE) all partitioned strongly into the melt (with the exception of Y, Ho and Lu in garnet), verifying that carbonatite is potentially a highly effective metasomatizing agent. The data also indicate that carbonatitic metasomatism will impart higher Ba/Rb, Ba/Nb, Nb/Ta, Sr/Ta, La/Ta, and lower Zr/Y, with little change to Sr/Nb, in affected mantle.
UR - http://www.scopus.com/inward/record.url?scp=0000758365&partnerID=8YFLogxK
U2 - 10.1007/BF01164645
DO - 10.1007/BF01164645
M3 - Article
AN - SCOPUS:0000758365
SN - 0930-0708
VL - 46
SP - 179
EP - 184
JO - Mineralogy and Petrology
JF - Mineralogy and Petrology
IS - 3
ER -