Figure 1.
X-ray diffraction (XRD) patterns of samples NV4, NV5, NV6, and NV7, compared to the XRD patterns of hematite (red) and goethite (blue) from the International Centre for Diffraction Data Powder Diffraction File (ICDD PDF) 4+ 2019 data base.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.