Geochemical Pt and Pd exploration led to the discovery of two precious metal anomalous concentrations in the Gaositai ultramafic complex, Hebei Province. Anomaly concentrations of Pt and Pd in rock, soil and stream sediments overlying the dunite and peridotite zone of the Gaositai complex coincide with the well-known PGE-bearing chromititc mineralization. These platinum anomalies are also associated with strong anomalies of such elements as Cr, Co and Ni. Nevertheless, Pd assumes very low background distribution, whereas the w(Pt)/w(Pd) ratio is higher. The second type of elevated PGE anomalous concentration follows the strike of the diopside zone and the shearing fault zone of the Gaositai ultramafic complex. These anomalies are characterized by strong anomaly intensity with a close relationship existent between Pt and Pd and the w(Pt)/w(Pd) ratio close to 1. However, no strong anomalies of Cr, Co and Ni are observed. Such a phenomenon is therefore thought to be the reflection of a new PGE mineralization. It is thus held that hidden PGE mineralization difficult to be recognized may be discovered by means of Pt and Pd geochemical exploration using rock, soil and stream sediment samples.
张兴超, 王爱枝, 袁德志, 韩存强. 河北高寺台杂岩体铂、钯地球化学分布和异常特征[J]. 物探与化探, 2008, 32(3): 261-266.
ZHANG Xing-chao, WANG Ai-zhi, YUAN De-zhi, HAN Cun-qiang. GEOCHEMICAL DISTRIBUTION AND ANOMALY CHARACTERISTICS OF Pt AND Pd IN THE GAOSITAI ULTRAMAFIC COMPLEX, HEBEI PROVINCE. Geophysical and Geochemical Exploration, 2008, 32(3): 261-266.
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