iSamples Complete Export Dataset - April 2025

This dataset contains a complete export of all iSamples records as of April 21, 2025, in GeoParquet format. The dataset includes over 6.6 million sample records with rich metadata including geographic coordinates, material classifications, context categories, and related resources. The data was exported using the iSamples export client with the query 'source:*', capturing the complete state of the iSample.xyz repository. Each record includes sample identifiers, descriptions, classifications, geospatial information (using WGS 84 coordinate system), timestamps, and various categorical attributes. This GeoParquet file provides an efficient format for analyzing the global distribution and classification of physical samples across scientific domains. The dataset is valuable for researchers working with physical samples in geoscience, material science, biology, and related fields who need to discover, access, or analyze sample collections at scale.