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Geochemical Journal
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Controls on the REE tetrad effect in Evidence from the Qianlishan and Baerzhe granites: Granites, China

Zhao Zhenhua, Xiong Xiaolin, Han Xiaodong, Wang Yixian, Wang Qiang, Bao Zhiwei, Borming Jahn
Geochemical Journal, Vol. 36, No. 6, P. 527-543, 2002

ABSTRACT

REE contents in whole-rock samples and constituent minerals of the Qianlishan and Baerzhe granites from China were determined using three analytical methods (ICP-AES, ICP-MS, and ID-TIMS). The REE abundance patterns of the granites show the M-type tetrad effect and strong Eu depletion in both whole-rock samples and in individual minerals samples. Fluid-melt interaction in the late stage of fractional crystallization is suggested to be the most important factor controlling the formation of REE tetrad effects in the granites.

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