Raw laser-ablation inductively couple plasma mass spectrometer (LA-ICP-MS) data and images of laser-ablation (LA) targets of Fe-oxyhydroxide and massive sulphide samples from the Semenov Hydrothermal Field of the Mid-Atlantic Ridge during the RRS James Cook cruise JC224 (March-April 2022)

Discrete samples of Fe-oxyhydroxide and seafloor massive sulphide were collected on the RRS James Cook cruise JC224 (March - April 2022) to the Semenov Hydrothermal Field, a seafloor massive sulphide (SMS) system located within the Mid Atlantic Ridge. Samples were collected using the Remotely Operated Vehicle (ROV) HyBIS (Murton et al., 2012). The samples were analysed onshore at the British Geological Survey for laser-ablation inductively-coupled-plasma mass-spectrometry (LA-ICP-MS) to obtain geochemical data of specific minerals. Included in the dataset are the raw data acquired from LA-ICP-MS and the associated images of laser-ablation (LA) targets. This dataset aims to improve understanding regarding the mobilisation, distribution and retention of metals during the oxidation of sulphide minerals and subsequent alteration to their secondary products. The data were collected as part of a PhD project funded under NERC's Ultramafic-hosted mineral Resource Assessment (ULTRA) project, grant reference NE/S004068/1, and the samples are stored at the National Oceanography Centre.

2022年3月至4月，依托詹姆斯·库克号（RRS James Cook）研究船JC224航次，于位于中大西洋洋脊（Mid Atlantic Ridge）的谢梅诺夫热液田（Semenov Hydrothermal Field，一处海底块状硫化物（seafloor massive sulphide, SMS）系统）采集了羟基氧化铁（Fe-oxyhydroxide）与海底块状硫化物的离散样品。本次采样采用遥控作业潜水器（Remotely Operated Vehicle, ROV）HyBIS完成（数据源自Murton等人2012年的研究）。样品送至英国地质调查局（British Geological Survey）开展岸上分析，通过激光剥蚀电感耦合等离子体质谱法（laser-ablation inductively-coupled-plasma mass-spectrometry, LA-ICP-MS）获取特定矿物的地球化学数据。本数据集包含LA-ICP-MS采集的原始数据，以及激光剥蚀（LA）靶点的配套影像。本数据集旨在加深对硫化物矿物氧化过程中金属的活化、分布与留存，以及其后续蚀变形成次生矿物过程的认知。本次数据采集属于英国自然环境研究理事会（NERC）超镁铁质岩容矿矿产资源评估（Ultramafic-hosted mineral Resource Assessment, ULTRA）项目资助的博士研究项目，项目资助编号为NE/S004068/1，样品现存储于英国国家海洋学中心（National Oceanography Centre）。