...Dennis Sugiono; Laure Martin; Nicolas Thébaud; Denis Fougerouse; Crystal K. LaFlamme; Marco Fiorentini; Laura Petrella; Paul Guagliardo; Steve Reddy; Si-Yu Hu; Alexandra Suvorova Abstract In orogenic systems, pyrite hosts both free-native and lattice-bound gold. The processes governing gold habit...

...Mohammad Ebdali; Ardeshir Hezarkhani The Janja region is located 30 kilometres NW of Sefidabeh city in Sistan and Baluchistan province, Iran. Considering the evidence of gold mineralization, it is necessary to identify the promising mineral areas in this region. Clustering is an important method...

... methodology selections of further detailed petrological exploration. Here, we present a novel application of Swin Transformer, a deep learning algorithm to classify mineral phases such as arsenopyrite, chalcopyrite, gold, pyrite, and stibnite in images captured by optical microscopy. To speed up the training...

... experiment silver gold tin sphalerite hydrothermal systems The possibility of Au and Ag incorporation in significant amounts in In-bearing sphalerite at high temperatures (> 700 °C) following the scheme Me + + In 3+ ↔ 2Zn 2+ (Me + = Au + , Ag + , Cu + ) is shown in ( Tonkacheev et al., 2019...

..., which made it possible to construct 2D and 3D models of interphase boundaries. In the first case, thin layers of gold NPs (~30 nm thick), iron (~50 nm thick), and copper (~50 nm thick) were deposited onto quartz crystals less than 40 μm in size by magnetron sputtering, i.e., all metals were...

...Don I. Cummings; Andy Orr; Francis MacDonald The Regnault gold deposit in Quebec, Canada, was discovered by Kenorland Minerals North America Ltd in 2020 following identification of a gold-in-till dispersal train. In 2022, two non-traditional media – eskers and organic lake-bottom mud (gyttja...

.... Most of the mineralization is characterized by the replacement of ankerite by quartz in veins, minor sulfides, and variable amounts of native gold, or consists of sheared mafic rocks intensely replaced with silica, biotite, arsenopyrite, and pyrrhotite ( Blais et al. 2015 ). Hydrothermal alteration...

...A. Hofmann Abstract The exceptional gold mineralisation in quartz pebble conglomerates of the Witwatersrand Basin is attributed to a combination of factors. These factors are linked to the co-evolution of the atmosphere, hydrosphere, lithosphere and biosphere, at a very specific time in Archaean...

... metamorphism forearc phase equilibria gold Sulfur is a minor component of the Earth’s crust but has a wide range of oxidation states (2– to 6+) and affinity for chalcophile elements, making its behavior of significant interest in metamorphic systems and ore deposits. In marine siliciclastic...

... deposit, followed by discovery of the Altan Nar and Bayan Khundii epithermal gold deposits along with several prospects and advanced exploration projects. These discoveries form the core of the emerging Khundii (“Valley”) metallogenic province, ~50 × 100 km in size, located within a single island-arc...

...N.V. Astakhova; O.N. Kolesnik; A.S. Astakhov; X. Shi; L. Hu; A.V. Alatortsev Abstract ––We studied the distribution of gold, silver, and platinum group elements (Pd, Pt, Rh, Ir, and Ru) in two bottom sediment cores of the southern Chukchi Sea. It is shown that the Holocene pelite–silty sediments...

..., the porphyry that crops out is unlikely to have provided the mineralizing fluids associated with the mineralization. A concealed intrusion or granitic dykes within the porphyry may be the source of the magmatic–hydrothermal fluids. The age data indicate that the Tomnadashan mineralization is coeval with gold...

... to 15 μm in size, associated with nickeltyrrellite, tyrrellite, berzelianite, hakite-(Zn), hakite-(Cd), eucairite, clausthalite, and gold in calcite gangue. In reflected light, kvačekite is white with a faint yellowish shade; bireflectance, pleochroism and anisotropy are absent. Internal reflections...

...B. Jane Barron; Lawrence M. Barron; Karsten Goemann Abstract A Cu- and Rh-enriched magmatic ore system is defined by abundant PGM (platinum group mineral) inclusions in forty-four Pt-Fe alloy nuggets from the Camumbi River gold placer, northwest Ecuador. Isoferroplatinum is depleted in Rh, Os...

... that occurred concurrent with or prior to extensional tectonism, such as the origins of Carlin-type gold deposits or sources of sodic-calcic alteration. As such, determination of the geometry, slip, and timing of normal faults in the Hilltop and Lewis mining districts is essential to reconstructing the pre...

... ., 2015 ). However, there is an important distinction to be made between those minerals that have a large number of discreet and potentially highly valuable occurrences such as gold and those that make up a significant volume of geological material exposed at or near the Earth's surface, such as feldspar...

... similar C1-chondrite normalized REE distributions, with REE patterns indicating significant enrichment of LREE relative to HREE and similar (La)N/(Sm)N and (Gd)N/(Yb)N ratios. These characteristics are similar to those of the gold ores, copper ores, altered rock and bedrock near the ore bodies...

...) This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License ( http://creativecommons.org/licenses/by/4.0/ ) clay fraction geochemistry UltraFine+ gold copper lithium Pilbara Yilgarn regolith CSIRO MIRWA M0462 and M0462a As part...

...Alexandre R. Cabral; Antônio A.S. Gomes, Jr.; Stephanie Lohmeier; Richard Wirth; Anja Schreiber Abstract One alluvial grain of gold, recovered from a placer deposit in the platiniferous Au-Pd belt of Minas Gerais, at Fazenda Limeira, is distinguished by inclusions, between approximately 2 and 10 µm...