ICDD no longer distributes these, but you may find legally free, older, reduced datasets:
The ICDD PDF-4 database is a comprehensive collection of powder diffraction data, which is widely used in materials science, chemistry, and physics. Here's what I found: Icdd Pdf-4 Database Free Download
The from the International Centre for Diffraction Data (ICDD) is the gold standard for identifying crystalline materials via X-ray diffraction (XRD). It contains: ICDD no longer distributes these, but you may
480,000+ entries; supports Rietveld and RIR quantitative analysis. PDF-4/Minerals Minerals & mineral-related Key Features of PDF-4+
: Verified student researchers can receive up to five free PDF entries from the ICDD entry download page . These can be downloaded in PDF or CIF (Crystallographic Information File) formats.
These specialized subsets of the main PDF-4+ database are sometimes offered at lower price points for targeted applications like mineralogy or basic phase identification. Key Features of PDF-4+