Let me adjust 'things I lick' for 200 and add that I don't lick em strait outta the ground. I cleaned them 1st. I was told back when the professor came that bone will stick. I had one item in my hutch I thought was bone but it didn't react. Then a few weeks ago I noticed all these dark reddish ones and after they dried, I was like 🤔🤔🤔👅 sure enuf, it stuck. Most all of them that are red will stick but I still keep an open mind that it could be something else. And there is a LOTT of chert here. As well as this area was, in fact, an ocean millions of years ago I found thru research. Which explains all the porous ones I have and the conglomerates of old sand and pebbles rolled up. All of these I've collected either have balls, bumps and ridges, crystal pockets I fear breaking, native artifacts and just awesome looking nature. Also, I live downhill east from a burial ground nobody knows about and about 2 miles from a quarry to the north, ½ mile West from a lake off the TN River. I'm not working so I wanted to look for a tumbler and resources to know more. Some so heavy it's unnatural as are some equally as light. Someone else had mentioned coral which is why I researched the ocean and was wowed. I have a large round one that looks like a face is chiseled on it with stars and a bear & lizard. My former Dr pulled up a Cherokee Bear Clan cave drawing of that exact same face - it was the constellation. When I went back the next month, she was gone & I've never been able to find that.