As a palaeomagician, there’s an intrinsic interest in having a huge hunk of magnetite (well done to those who eventually worked it out) on one’s desk, even if I’m going to have to be careful not to put it near any of my samples (or my credit cards, for that matter). But how has such a thing come to form? Normally magnetite is a fairly minor component of igneous rocks, and of sediments that are derived from them; what process has produced such a concentrated mass of it? Perhaps taking a closer look of the original sampling locality will gives us a few clues:
Nice plan for content warnings on Mastodon and the Fediverse. Now you need a Mastodon/Fediverse button on this blog.