bigcypresshunter said:
Alnitak said:
Hey, I read all of the replies, but I think that its improperly marked as "SOLVED." If you disagree, feel free to weigh in.
Jeff
The owner of the object is satisfied that it is solved. His opinion is the one that counts.
Maybe you could PM him, Jeff, and he could explain this to you. ..or maybe he will respond again. Good link BTW, but he has it in hand, we only have pictures. Do fossils look and feel like ceramic, Jeff? Do they sharpen knives?
Sure, fossils can look and feel like a lot of things. I have fossilized shells that are now pyrite. I can show you a link of a belemnite fossilized into fire opal. Fossils can be formed from many types of stone. The original belemnites were formed of calcite, and most are still calcite. Calcite is a hard vitreous mineral and will feel a lot like ceramic (also vitreous). You could most definitely sharpen a knife with it. You can sharpen a knife on nearly any fine-grained stone.
While his opinion of course counts, it's also not definitive. This is the Internet. People hit threads like this from all over time and space. I found this thread due to a link from another thread where it was suggested a similar stone was a sharpening stone based *solely* on the answer here. For that reason alone, it's quite good to make sure that alternate hypotheses are presented.
Look, it could be a sharpening stone. It could be a belemnite. It could be a belemnite that was used as a sharpening stone. Personally I think it's a belemnite; the photo is a perfect match, and its a common fossil. The picture of the broken end is actually *particularly* definitive to me as I can see the remains of a pattern of radial lines, which is exactly how the calcite in a belemnite grew. I can also so the very terminal end of the internal cavity. But like I said, you can disagree.
I would suggest that the OP send the picture to a paleontologist and get an opinion.
Jeff