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Formation of hydrothermal mineralization is related to the late stages of, or immediate following, orogenic compressional regimes that have been superimposed on arc magmatism. For instance, mineralization-related fluid flux mechanisms of porphyry Cu formation deal with how magmatic fluids are transferred from the corresponding source chambers to the environment of stock emplacement related to porphyry systems. In this paper, firstly, we review the imperative physicochemical processes of mineralizing fluid flux mechanisms, e.g., the function of intrusive, metalliferous compounds, and permeable structures, and then assemble them to translate the mechanism of forming focused fluid flux into 2D mappable criteria for mineral exploration targeting. According to the review and the ensuing knowledge and idea, we propose a simplifying approach by focusing on a geological point feature - inferred sites of strongly concentrated ore fluid flux - that represents a critical, if not the most critical, geological element in mineral exploration targeting. We demonstrate that this point feature can be derived as a mappable criterion and that there are stronger spatial and thermal relationships between the location of hydrothermal mineral deposits and this proposed point feature relative to the existing point and line features (e.g., intrusive contacts, fault density, fault intersections, and proximity to faults), which have been widely used in the procedure of prospectivity analysis for mineral exploration targeting. We illustrate the procedures of generating mineral exploration targets, proposed in this paper, using geochemical and geological data sets of porphyry Cu deposits of Iran. [Display omitted] • Function of hydrothermal mineralization-related focused fluid flux is discussed. • The function is translated into a newly-explored mappable exploration criterion. • The mappable criterion mitigates the problem of localizing hydrothermal mineralization. • Geochemical and geological data sets are applied in the modeling procedure. • Physicochemical ore-forming processes are discussed. [ABSTRACT FROM AUTHOR]

Yanshanian magmatism develops well and has obvious metallogenic specificity in the Qinzhou–Hangzhou bays of South China. Zircon, in granite, has great potential in the study of metallogenic specificity. Moreover, with the development of in-situ zircon analysis technology, a significant amount of data on zircon composition has become available in recent years. Hence, to further elucidate the distinctive diagnostic signatures of zircon signatures regarding metallogenic fertility and the preference for metallogenic types of granites, this paper exhaustively explores all possible bivariate and ternary discrimination diagrams using a set of 13 rare-earth elements with published zircon data from Yanshanian, South China. This results in 4095 binary diagrams and 12,485 ternary diagrams, ranked according to their success in classifying the training data. One-hundred binary graphs and 300 ternary graphs with the highest CH index values were selected, from which the graphs were picked out. The results reveal that there is no suitable diagram to distinguish between mineralization and barren granites. Further, in the diagrams to distinguish the type of mineralization, there are indeed some overlapping parameter ranges (such as Gd/Yb and Ce/Gd); however, it still can be observed that some binary and ternary graphs containing Eu or Ce (e.g. Eu/Gd, Eu/Tb and Ce/Sm) can discriminate between samples related to porphyry Cu and samples related to W–Sn (Sn). Some diagrams (i.e. Dy/Lu–Er/Lu, Gd/Dy–Er/Yb) also have been observed to distinguish between ore-forming types of granites, the underlying geochemical mechanism of which has not been fully understood. In addition, our results suggest that the linear discrimination analysis (LDA) method outperforms any of the traditional discrimination diagrams in discriminating ore-bearing and fertile granites. The results of geochemical data mining in this paper can be used as prospective indicators to provide a scientific basis for the study of Yanshanian hydrothermal deposits in South China. Moreover, the compositions of zircon are relatively simple to obtain, and the LDA methods described in this study could potentially be used as a useful exploration tool. • New discrimination diagrams were proposed by using zircon REE composition. • Most discrimination diagrams related to Eu and Ce can distinguish the mineralization information of the parent rock. • The linear discrimination analysis (LDA) method remarkably outperforms any traditional discrimination diagram. [ABSTRACT FROM AUTHOR]