EDS X-ray spectra of C3S (top left), C2S (top right), C3A (bottom left), and C4AF (bottom right). [Paul Stutzman, NIST]

EDS X-ray spectra of alkali sulfate (left) and periclase (right.) [Paul Stutzman, NIST]

Composite X-ray images. (Companion to above images.) [Paul Stutzman, NIST]