Wylie, Ann G.Schweitzer, PeterSiegrist, H. GaltData on size and shape characteristics of riebeckite cleavage fragments. The sample was obtained from the Long Valley Creek Quarry, California. Data were collected in ca. 1978-1979. Data values were obtained with Scanning Electron Microscopy (SEM) with Energy-Dispersive X-Ray Analysis (EDXA) capability. See documentation file for full study abstract, an explanation of the content of the data files, and references to associated publications. The csv version contains the same data as the corresponding xlsx file, but its structure has been modified to make well-formed csv. The csv files are provided as a software-independent alternative to the xlsx format.enAmphibole groupRiebeckiteGranulometryDataset