Indexed X-ray powder diffraction data, including visual intensities, observed glancing angles, measured and calculated interplanar spacings, and indices of the reflecting planes, are given for almost 300 minerals. Nearly all native elements, sulfides, sulfosalts, and opaque oxide minerals, and silver and mercury halides, calcite, dolomite, siderite, minerals of the wolframite and scheelite groups, and quartz are included. Many new determinations of cell dimensions are given, and the structure is briefly noted where known. The localities of all specimens are given.
Indexes of mineral names, of the three strongest powder lines, of chemical elements, and of localities are included.