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This study serves to demonstrate the application of geophysical data interpretation in order to recognize the structural features related to the mineralization. The aforementioned structures generate the evidence layers, which undergo augmentation and enhancement processes. This results in the production of evidence layers that, when integrated with other geo-exploration evidence layers, contribute to the delineation of mineral exploration targets with increased reliability. In this study, the utilization of aeromagnetic and radiometric data is illustrated for the recognition of structural features and host rocks associated with orogenic gold mineral systems. Furthermore, the integration of geophysical data interpretation, specifically the identification of mineralization-related features, with alterations and the geochemical signature of mineralization is demonstrated. This integration facilitates the delimitation of exploration targets with improved dependability. [ABSTRACT FROM AUTHOR]

The Saqez-Sardasht region (~2000) is located in the north Sanandaj-Sirjan Zone (SSZ), between longitudes of 46°00′67 00″ E to 46°30′00″ and latitudes of 36°00′00″ N to 36°30′00″, northwest Iran. The region was fully studied to recognize the promising areas for gold deposits using various methods of fuzzy fusion techniques. Accordingly, six evidential layers (i.e., lithological, tectonic, alteration, with Au, Sb, and W geochemical anomalies have been derived from three geo-data sets of geology, geochemistry, and remote sensing. A concentration–number (C–N) fractal method was used to determine the geochemical threshold values. The outcome was then combined, using the multiple indicator kriging (MIK) geochemical methods to improve the mineral potential mapping of gold deposits. In this study, four various fuzzy mineral prospectivity mapping (MPM) methods consisting of conventional VIKOR, modified VIKOR, multi-class index overlay, and Geo Fuzzy Inference System (GeoFIS) have been employed to detect the most promising areas in the Saqez-Sardasht region. The MPMs were numerically compared to each other based on the MPM efficiency index for the seven gold prospects in the study region. The Geo Fuzzy Inference System (GeoFIS) acquired 91.84% agreement, so it is selected as the superior technique to lead the prospect selection. With affiliation to the outcome of MPM maps, promising mineralized areas, controlled by shear zones, were located in the southwestern part of the Saqez region. [ABSTRACT FROM AUTHOR]

The Williams Brook property, located in the northwestern part of the Chaleur Bay Synclinorium of northern New Brunswick, hosts gold mineralization within Silurian-Devonian, bimodal volcano-sedimentary rocks of the Wapske Formation [...]

Numerous gold occurrences/deposits occur in and around the Tobique-Chaleur Zone in northern New Brunswick (NB) and the adjacent Gaspé Peninsula. Gold occurrences in northwestern NB are typically associated with large-scale crustal structures or their subsidiary splays (e.g., the Rocky Brook-Millstream Fault system). The Williams Brook (WB) property, situated in the northwest part of the Chaleur Bay Synclinorium, is hosted by Early Devonian volcanic-sedimentary rocks of the Wapske Formation (Tobique Group) and exhibits characteristics of a low-sulphidation epithermal Au system. Finding and exploring for this type of system can be challenging and requires a variety of techniques and approaches to be successful. In this study, portable X-ray fluorescence (pXRF) spectrometry, multi-element four acid digestion ICP-AES/-MS (ME-MS61), and micro-X-Ray Fluorescence (µ-XRF) Energy Dispersive spectrometry were used to analyze samples from the WB property. Composition-based multivariate techniques (compositional biplots and correlation analysis) were applied to the pXRF and ICP-based multi-element datasets. Compositional biplots derived from the data showed that Au, Ag, As, and Sb are closely associated. A mineralogical study conducted on polished thin sections from core samples identified gold-bearing minerals using l^-XRF. These results show that gold occurs primarily in association with pyrite, galena, and sphalerite, with sericitic, chloritic, and dolomite alteration associated with gold-bearing quartz veins. Comparison of pXRF and ME-MS61 datasets in terms of identifying pathfinder elements found that ME-MS61 provided more reliable results; however, the benefits of pXRF acquired data (i.e., non-destructive, faster, and convenient to use in the field) cannot be overlooked. These findings not only give us a better understanding of the minerals and geochemical signatures present in the gold deposits at WB, but also provide a useful guide for identifying similar deposits in the future through the use of indicator minerals and elements. [ABSTRACT FROM AUTHOR]