Any help identifying what this might be would be appreciated. Found in western Nevada near the Reno area. All of the geology around it is relatively young volcanic rocks, mostly rhyolite. But there is about a 6 acre area that appears to be an inlier formation of an older geology. I found this about 6 inches under ground while looking for some other rocks that were interesting. It looks similar in color and shape to some dinosaur teeth I have seen. The swirled nature of the material is unique to anything I have found online. I will post more pics in the comments.