Figure 5. a - REE pattern of zircon grains from sample CMR06 showing negative Eu anomaly with HREE enrichment also observe are some grains with LREE enrichment, negative Eu anomaly with relatively stable HREE (5 and 15) whereas grains 11 and 29 show positive Eu anomaly with HREE enrichment. b - REE patterns of zircon grains for CMR07 showing high Ce concentrations, negative Eu anomaly and HREE enrichment. Discrepancy patterns for grains 5, 11, 29 with positive Eu anomalies followed by HREE enrichment and grains 20, 21, and 22 with negative Eu anomaly and HREE depletion can also be observed. c - REE patterns of zircon grains for CMR08, showing great variation in patterns with HREE enrichment, positive Eu anomaly, negative Eu anomaly and grains showing progressive enrichment from LREE to HREE

From

New LA-ICP-MS U-Pb Ages, Lu-Hf Systematics and REE Characterization of Zircons from a Granitic Pluton in the Betare Oya Gold District, SE Cameroon

Kevin I. Ateh, Cheo E. Suh, Elisha M. Shemang, A. Vishiti, Enerst Tata, Nelson N. Chombong

Journal of Geosciences and Geomatics. 2017, 5(6), 267-283 doi:10.12691/jgg-5-6-2