@article{yu_resource_2021, title = {Resource estimation of the sulfide-rich deposits of the {Yuhuang}-1 hydrothermal field on the ultraslow-spreading {Southwest} {Indian} {Ridge}}, issn = {0169-1368}, url = {https://www.sciencedirect.com/science/article/pii/S0169136821001943}, doi = {10.1016/j.oregeorev.2021.104169}, abstract = {Seafloor massive sulfide (SMS) deposits are important deep-sea mineral resources expected to occur predominantly on slow- and ultraslow-spreading mid-ocean ridges. Resource estimates are already available for some of the largest SMS deposits on slow-spreading ridges but not on ultraslow-spreading ridges. Based on geological mapping and sampling, this study investigates the distribution and content of sulfide-rich deposits in the Yuhuang-1 hydrothermal field (YHF), located on the ultraslow-spreading Southwest Indian Ridge. The sulfide-rich deposits in the YHF are composed of two areas ∼500 m apart: the southwest sulfide area (SWS) and the northeast sulfide area (NES). We calculated the volume of sulfide-rich mounds in the YHF and arrived at a total accumulation of ∼10.6 × 106 tons, including at least ∼7.5 × 105 tons of copper and zinc and ∼18 tons of gold. Furthermore, considering the coverage of layered hydrothermal sediment mixed with sulfide-rich breccias, which may have underlying massive sulfide deposits, the maximum total mass was estimated at ∼45.1 × 106 tons. This suggests that the YHF is one of the largest SMS deposits worldwide and confirm that ultraslow-spreading ridges have the greatest potential to form large-scale SMS deposits.}, language = {en}, urldate = {2021-04-21}, journal = {Ore Geology Reviews}, author = {Yu, Junyu and Tao, Chunhui and Liao, Shili and Dias, Ágata and Liang, Jin and Yang, Weifang and Zhu, Chuanwei}, month = apr, year = {2021}, note = {3 citations (Crossref) [2022-09-21]}, keywords = {Resource estimate, Seafloor massive sulfide deposits, Southwest Indian Ridge, Yuhuang-1 hydrothermal field}, pages = {104169}, }