This dataset is an overall sample list, as an Excel spreadsheet, providing details of the major sample suites collected during the SoS RARE project (2015-2017). It includes location details for samples collected in a range of localities worldwide. The samples are chiefly rocks and soils. Most material is still held by the institutions that did the work, as recorded in the sample list. The dataset also includes partial details of work that has been done on the samples. However time constraints have prevented complete update of the spreadsheet and so it is uploaded here to provide the best record possible of the available sample material.