This rock was found in kephalonia Greece, on a beach in lassi. The rock is black in colour, smooth with thumb like prints, very metallic smell and very slightly magnetic. We took this rock to oxford museum of natural history to be seen by a mineralogist. We received a very confused letter back from the mineralogist, he has no definitive answer as to what this specimen is, he said it has iron like features but was not certain. Embedded in this rock is a white cylinder like object, the mineralogist stated in the letter; “How you end up with a plastic pipe in the specimen I don’t know, slag or iron material would be incredibly hot and would melt the pipe therefore is it plastic? you have stumped me”. The rock itself has to have been hot enough to melt through the “pipe” as you can see in the pictures attached. Please could someone help us know what this is and how this has happened? Thankyou !
The rock shown weighs 131 grams, is very hard, and leaves a greyish streak.