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前言近来,关于北美和南美斑岩铜矿床的地球化学研究已表明,在钾化和绢云母化蚀变带中Rb增加,K/Rb比值减少(Armbru-
Preface Recently, geochemical studies on porphyry copper deposits in North America and South America have shown that the Rb increases and the K / Rb ratio decreases in the potash and sericitized alteration zones (Armbru-