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Post by Bob on Jul 6, 2021 22:17:04 GMT -5
Bob 100 lbs of chert - that is awesome! On the subject of fusulinid fossils.......I wonder if this is one? And this one, I don't know - maybe oolites? (Or maybe chert with chert speckles LOL) That 3rd pic was fusulinids. The one after that probably. They often look like grains of rice. No oolitic chert is different. It appears to contain tiny spheres. I have some and it's very odd to look at. |
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Post by Bob on Jul 6, 2021 22:21:57 GMT -5
rockpickerforever, I have never seen anything like that before. A really cool specimen.
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Jul 7, 2021 18:47:44 GMT -5
Bob , I see what you mean by the grains of rice! Funny, when I find an unusual rock like this, I can't find anything like it nearby. Anyway, I put the fusilinid fossil rock in the tumbler last Friday, so this Friday I'll see how it's doing. I do have one really good piece of oolitic chert - in fact, its my favorite rock!  
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Post by Bob on Jul 9, 2021 11:22:16 GMT -5
Yes, that's it! And a really nice one. When I found my first one a few years ago, no one seemed to know what it was, and eventually a geologist examined it and told me what it was, and that it's not uncommon in this part of the US. I have several pieces in process, but none all the way through polish. There is often one porous area that just doesn't go quite well. None of mine are as pretty as yours. Mine are from the NE corner of OK.
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Post by rockpickerforever on Jul 10, 2021 14:21:38 GMT -5
I haven't been out on the patio searching for rocks, but this was a photo in my computer of one of the better fusulinid fossil rocks I have. Again, from the Colorado Desert in Southern California. More specifically from Ocotillo Wells.
This one has been tumbled.
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Post by Bob on Jul 21, 2021 11:43:38 GMT -5
Last weekend I was at my first ever rock and mineral show, in Tulsa. One old timer was knapping this common, local chert material into all kinds of projectile points, some quite complex. I had a box of polished chert in my truck and went out and brought some to show him. He was immediately classifying it upon sight into Reed, Burlington, Florence A, and other types which I have tried to figure out but been unsuccessful in many cases. He loved seeing that I think the local grey chert is very pretty. Another thing I like about it is the long, narrow pieces often ring like a bell when tapped.
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Jul 23, 2021 8:35:37 GMT -5
Last weekend I was at my first ever rock and mineral show, in Tulsa. One old timer was knapping this common, local chert material into all kinds of projectile points, some quite complex. I had a box of polished chert in my truck and went out and brought some to show him. He was immediately classifying it upon sight into Reed, Burlington, Florence A, and other types which I have tried to figure out but been unsuccessful in many cases. He loved seeing that I think the local grey chert is very pretty. Another thing I like about it is the long, narrow pieces often ring like a bell when tapped. Wow! That's amazing he was able to tell you the type of chert it was! I haven't found too many narrow pieces, but I have found a few cube-like pieces that I'm amazed by. They are always white. Wish I knew why - I bet that old timer would know! |
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Post by Bob on Aug 24, 2021 14:48:25 GMT -5
I too have seen some of those rectangular white pieces at times. In the last year, I have collected some of the better ones and tumbled some. A lot of them have fractures appear that weren't evident before tumbling. So I think there is some kind of fracturing occurring in nature that causes their shape.
Some of them have come out so bright white in the end with so few markings of any kind that's it's hard to tell them from some other material. My fav white ones are the ones that just contain one or more fusulinids on one side or the other to remind me that indeed this is chert.
I'm almost completely done with all my chert. One year of mostly that was enough. I have a few pieces that sort of have a quartz vein running through them. This vein in a dark grey rock has sort of a bluish "glow" to it. I bet you have found some of those. If memory serves, those came from between Neosho and Pineville.
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