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Post by Bob on Aug 1, 2023 9:40:56 GMT -5
"...the closest thing I found was oolitic chert..."
Maybe, maybe not. That's something I've found quite a bit of in some places in Oklahoma and had to have it IDd by a geologist. I remember him commenting on the spherical things being key. Perhaps he was commenting on my rocks or perhaps he was commenting on that the things need to be spherical to be that material. But what you have and what I had in this thread are not spherical.
So far, almost all the oolitic chert I've found has been of poor quality--too crumbly for tumbling.
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Post by velodromed on Aug 1, 2023 22:00:57 GMT -5
"...the closest thing I found was oolitic chert..." Maybe, maybe not. That's something I've found quite a bit of in some places in Oklahoma and had to have it IDd by a geologist. I remember him commenting on the spherical things being key. Perhaps he was commenting on my rocks or perhaps he was commenting on that the things need to be spherical to be that material. But what you have and what I had in this thread are not spherical. So far, almost all the oolitic chert I've found has been of poor quality--too crumbly for tumbling. It’s one of the more interesting rocks I’ve found in the wild. I spent way too long trying to find some thing similar online (the extent of my research abilities right now) but yeah, that was the closest. About that small piece that I polished, it was fairly see-through when done (dang it, I wish I could find it!), and rather reminded me of that one you posted. A medium light gray chalcedony of sorts that those little bits float in. I need to dig it out and tumble it. Fortunately, I know where is the larger chunk is. I think.
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