@misc{10481/85004, year = {2023}, month = {9}, url = {https://hdl.handle.net/10481/85004}, abstract = {Epithermal bonanza-type ores, characterized by weight-percent contents of e.g., gold and silver in a few mm to cm, are generated by mixtures of magmatic-derived hydrothermal brines and external fluids (e.g., meteoric) that transport a variety of metals to the site of deposition. However, the low solubilities of precious metals in hydrothermal fluids cannot justify the high concentrations necessary to produce such type of hyper-enriched metal ore. Here we show that boiling metal-bearing brines can produce, aggregate, and accumulate metal nanomaterials, ultimately leading to focused gold + silver ± copper over-enrichments. We found direct nano-scale evidence of nanoparticulate gold- and/or silver-bearing ores formed via nonclassical growth (i.e., nanomaterial attachment) during boiling in an intermediate-sulfidation epithermal bonanza. The documented processes may explain the generation of bonanzas in metal-rich brines from a range of mineral deposit types.}, organization = {MCIN/AEI/10.13039/50110001133: NANOMET PID2022-138768OB-I00}, organization = {ERDF A way of making Europe, European Union}, organization = {PAPIIT-DGAPA-UNAM: IN 218323}, organization = {CONAHCyT}, organization = {Geological Society of America 13570-22}, organization = {Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México MCIN/AEI/10.13039/501100011033, PID 2019-105625RB-C21 DGAPA, UNAM}, publisher = {Springer Nature}, title = {Nanomaterial accumulation in boiling brines enhances epithermal bonanzas}, doi = {10.1038/s41598-023-41756-4}, author = {Cano, Néstor and González Jiménez, José María}, }