[spokeshave]

Cesium, barium, cobalt, iron, chromium, titanium, cerium, gadolinium, aluminum, silicon, and sulfur.

These are all elements. Why would you need scanning electron microscopy to identify them?

Because the particles found in the blood are very small...some of the fibers are a few nanometers in diameter

The Scanning electron Microscope (SEM) with X-ray elemental analysis option can image and identify these small particles down to 10,2nm

Another X-Ray analysis of rock composition

.

[grey_whiskers]

“...with X-ray analysis option”.

So in crystalline form, then. Answered, thank you.