Meteorite Thin Sections. Educational and sales page about meteorite thin sections with photographs. We offer a large inventory of thin sections of various meteorites included lunar meteorite thin sections and martian meteorite thin sections. The standard for meteorite thin section is a thickness of 0.03 mm= 30 microns. The meteorite thin section are glued to a glass slide with resin of a particular refractive index (usually 1.540) and covered with a glass cover slip (except the microprobe polished thin sections has no cover slip). This is the standard method for preparing most of the rock-forming minerals for study. So that light may be transmitted through it when it is examined under a transmitted-light polarizing microscope. We offer thin sections with a slide of 30 x 45 mm.