Showing papers in "Ore Geology Reviews in 2021"

TL;DR: In this article, the authors present a survey of cobalt resources in Europe and evaluate the potential for additional discoveries, based on published information and survey of national mineral resource agencies, 509 cobalt-bearing deposits and occurrences have been identified in 25 countries in Europe.

TL;DR: In this paper, the LA-ICPMS trace element maps of pyrite from three styles of ore deposits related to magmatic-hydrothermal processes (epithermal Au-Ag, IOCG, and porphyry Cu-Au-Mo) were presented.

TL;DR: In this paper, the authors describe how an active continental margin extensional setting can also define an important tectonic environment for the development of a world-class regional metallogenic province subsequent to subduction and compressional stresses.

TL;DR: In this article, the C-C fractal model was applied to a soil dataset from Cyprus to demonstrate and interpret the results associated with copper (Cu)-related VMS mineralisation considering the geological-geochemical evidence.

TL;DR: In this article, the authors constructed a new model of crustal thickness and Vp/Vs ratio for the crust beneath the eastern South China Block using H-κ stacking of teleseismic P-wave radial receiver functions from 845 broadband seismic stations.

TL;DR: In this paper, the authors reconstructed the Mesozoic tectonic architecture and determined the temporal and spatial evolution of magmatic activities in the ESCB. The analysis of regional deformation shows that two groups of folds, including NE/NNE-trending folds in the Cathaysia Block and NW/NWW-tending folds in inland, were formed in the Middle-Late Triassic.

TL;DR: In this paper, a combination of anomalous geophysical features has been observed in the sub-continental lithospheric mantle (SCLM) and the asthenosphere mantle, which include anomalously thin lithosphere (thickness ~70 km), low S- and P-wave seismic velocity in the upper mantle (70-150 km), and a dipping highconductivity body extending from the lower crust to the asthesosphere (~150 km).

TL;DR: In this article, the authors used a mineral systems approach to help generate exploration targeting models using a spatial statistical method - weights of evidence (WofE) and data-driven machine learning tools, namely radial basis function neural networks (RBFNN) and support vector machine (SVM).

TL;DR: Li et al. as discussed by the authors used LA-ICP-MS trace element maps and spot analyses on the sphalerite and galena selected from Maoping, aiming to establish tarce element partitioning behavior in co-crystallized sphalerite-galena, constrain the possible controls on the variation of trace element.

TL;DR: In this paper, the authors proposed a two-stage model to explain the spatio-temporal distribution of the ore-related granites and volcanic-subvolcanic rocks in the Nanling W-Sn and Wuyi Au-Cu metallogenic belts, respectively.

TL;DR: In this article, the authors employed three parameters, namely the Gini impurity index, least-squared errors, and receiver operating characteristics curves, for sensitivity analysis of exploration targeting criteria.

TL;DR: Hylite as mentioned in this paper is an open-source python workflow for creating hyperclouds by seamlessly fusing geometric information with data from a variety of hyperspectral imaging sensors and applying necessary atmospheric and illumination corrections.

TL;DR: In this article, the authors show that partial melting of anhydrous fertile spinel peridotites could produce Sc-rich primary melts, whereas melts derived from garnet peridotsites are generally of low Sc concentrations.

TL;DR: Based on previous publications and new exploration results of the W deposits in South China, the majority of such deposits are reviewed, and are divided into 8 types: quartz-vein, skarn, greisen, porphyry, granite veinlet-disseminated, fractural-hydrothermal, stratabound, and weathering-placer types.

TL;DR: The discovery of lithium in the Salar de Atacama of Northern Chile during a survey in 1969, initiated the identification of one of the worlds major continental regions of lithium brines as discussed by the authors.

TL;DR: Wang et al. as mentioned in this paper employed an improved generative adversarial network (GAN) to detect multivariate geochemical anomalies related to mineralization, which significantly improves anomaly detection performance by combining the advantages of deep variational autoencoder and GAN.

TL;DR: In this article, Pb-Zn-Cd isotope analyses were performed on sphalerite from Maoping, in order to understand the ore metal source and metallogenesis in the SYGMP.

TL;DR: In this article, the chemical composition of gold grains from various Au-bearing deposits and districts, including orogenic, volcanogenic massive sulfide (VMS), porphyry Cu-Au deposits, epithermal Au-Ag, and reduced intrusion-related gold (RIRG) deposits, were investigated by electron probe microanalyzer (EPMA) and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to establish discriminant chemical signatures to apply indicator mineral surveys for exploration for goldbearing deposits.

TL;DR: The Chiatura mine in central Georgia is considered to be one of the largest metallurgical grade manganese mines in the world, yet its geochemistry is poorly known.

TL;DR: In this paper, a combination of lithology, grain size characteristics (mean size, sorting, skewness, kurtosis), high-resolution seismic features, and associated bivariate and cluster analysis results support the identification of two distinct intervals of fine-grained sediments that were deposited by different sedimentary processes.

TL;DR: In this paper, Willsboro, Mali, QC04, and three other andradite samples from the Anji polymetallic skarn deposit were analyzed to discuss these questions.

TL;DR: In this article, a systematic analysis of the temporospatial distribution of ore deposits in the Xingmeng orogenic belt (EXOB) was performed to constrain the geodynamic setting of mineralization.

TL;DR: In this article, a deep regression neural network was built to map the mineral prospectivity in the Daqiao Gold Mine in Gansu Province, China using multi-source data including geological, geophysical, and geochemical data.

TL;DR: In this paper, a detailed information of these relationships recorded within hydrothermal quartz from the Taiyangshan porphyry Cu-Mo deposit (NW China) is obtained using integrated cathodoluminescence (CL) imaging, trace element analyses, and fluid inclusion petrography.

TL;DR: In this article, the mineralogy and chemical composition of native gold from twenty-seven representative orogenic gold deposits were investigated using optical microscopy, electron probe microanalysis (EPMA), and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS).

TL;DR: In early Earth history, the development of plate tectonics allowed subduction processes to be increasingly important in both recycling of elements from the upper mantle into the lower crust and from there into the upper crust where mineral deposits could form and be exploited.

TL;DR: In this article, the Kani Zarrineh bauxite is mainly composed of diaspore, hematite, and kaolinite and the results of the R-mode factor analysis indicate that, in addition to Al, high field strength elements Nb and Ta can be used confidently for assessing parental affinity of the kani Zaraite ores, especially from northwestern Iran of different ages that basalt rocks were the parent rock of these deposits.

TL;DR: In this paper, three types of primary fluid inclusions (FIs) are identified in quartz formed at different stages: CO2-H2O-NaCl (C-type), H2O−NaCl(W-type) and pure CO2 (PC-type).

TL;DR: In this article, a new classification framework is proposed in which IOCG deposits form the major part of a family of deposits within Cu-Au-Fe (CGI) mineral systems.

TL;DR: In this article, the authors investigated the mineralogical and geochemical characteristics of deep-sea sediments in three sediment cores from the western North Pacific Ocean, and they found that the pelagic clay sediments have higher rare earth element (REE) concentrations than the carbonate ooze sediments.