Thin-Sections are widely used in the scientific world to study meteorites and their chemical composition. A thin slice, exactly 30 microns thick, of a meteorite is mounted on a glass slice, highly polished and absolutely flat. It can then be covered by another very thin piece of glass for preservation, or left uncovered to be analyzed by a microprobe. It can then be studied under a microscope using various filters.
The pictures will show you what you can see there.