What am I looking at here exactly?
My first guess was just common chert. Then I thought that it may be limestone, given the texture of the bit of gray area. I red that Limestone can have impurities to make it red in some areas. But it's like the texture changes where the color changes. The gray is rough while the brown/red areas are a bit more smooth. I took it in to my science professor and he said he really wasn't sure where to begin looking either. He said the closest thing he could relate it to was jasper which, when he showed me a piece, does seem to resemble the brown areas on what I'm showing below.
My best guess is still that it's just limestone, but I'm not extremely knowledgeable in this area. Anyone else know, or at least have better ideas?
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