... thin sections (30 μm thick), and not dimpled. In fact, it has been observed that dimple grinding undermines geological sample integrity. To preserve sample integrity, mechanical thinning in most cases was accomplished manually, using carborundum abrasive in the first stages of grinding and alumina...

... in the ultrahigh-pressure (UHP) metamorphic belt ( Xu et al. 2008 ). However, the natural occurrence of SiC has been challenged scientifically for a long time because contamination issues arise from carborundum, which is widely used in the geological lab as cutting and abrasion material ( Milton and Vitaliano 1985...