Field photographs of rock formations or modern precipitates from the sedimentary environment (NERC Grant NE/M010953/1)

Field photographs of rock formations or modern precipitates from the sedimentary environment. Samples were collected throughout the UK. This data was collected between February 2019 and November 2019. This data was collected to better understand the low temperature cycling of Telurium (Te) and Sellenium (Se) in the geological environment. For example, a range of ochre samples were included in this data. Ochres are a modern precipitate commonly found in rivers and streams which flow through geographical areas with a history of mining resources which are rich in sulphides. Iron from the sulphides are leached out and deposited downstream, coating river and stream beds, giving a red, yellow or orange colouration. Ochres can be a sink for trace metals such as Te and Se, therefore studying these environments could be informative from a resource perspective but also from an environmental hazard perspective. This data would be useful for researchers who require reference photographs for similar studies or as an aid for resampling.本数据集涵盖沉积环境下岩层与现代析出物的野外实拍照片，样本采集范围覆盖全英国，采集时段为2019年2月至2019年11月。本次数据采集旨在深入探究地质环境中碲（Tellurium, Te）与硒（Selenium, Se）的低温循环过程。本数据集纳入多组赭石样本，赭石是一类常见的现代析出物，多分布于流经硫化物矿产富集矿区的河流与溪流中；硫化物中的铁元素被淋滤后搬运至下游沉积，附着于河床与溪床表面，形成红色、黄色或橙色的外观。赭石可作为碲、硒等痕量金属的储集汇，因此对这类环境的研究不仅具备矿产资源开发视角的参考价值，同时也可用于环境风险评估。该数据集可为需要参考照片开展同类研究或辅助重采样工作的研究人员提供支持。