A few weeks ago i found this rock in the geology collection cupboard that my Geography teacher inherited from his predecessor. It is numbered 3729 but no list exists of the collection so we can not identify it.it is very heavy (dense) and non magnetic, the photos are accurate as to how it looks. I am hoping someone can help. My metal ruler scratches it and this scratching feels like metal on metal. I do not no location found. It is very cool to the touch. Has layers in it with grain structure getting finer closer to layer. Could not break it but the photos give an idea. Thank you
The red staining should be a clue that there is probably some iron involved. Due to the botryoidal surface in one of the photos, and the fact that is not magnetic, you most likely have a piece of hematite. Even with the staining, it's relatively clean, so it was probably prepared for display at some point in the past.