Standard X-ray Diffraction Powder Patterns: Section 1. Data for 46 Substances

Report discussing forty-six standard X-ray diffraction powder patterns. Fourteen are to replace twelve patterns already given in the X-ray Powder Data File, and thirty-four are for substances not previously included. The X-ray Powder Data File is a compilation of diffraction patterns from many sources and is used for the identification of unknown crystalline materials by matching spacing and intensity measurements. The patterns were made with a Geiger counter X-ray diffractometer, using samples of high purity.