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.
SEM photomicrographs of As-bearing soluble salt and framboidal pyrite (a-1) and the corresponding elemental maps of As (a-2), Ca (a-3), Na (a-4), S (a-5), and O (a-6), and SEM photomicrographs of a salt-like particle composed mainly of K and Cl (b-1), and the EDS spectrum of the particle (b-2).
