Planko Posted January 4, 2020 Posted January 4, 2020 Thinking Gyrode Gentii but wanted to be sure before labeling. Found NSR in some grey matrix. I know picture is not great. Just got in and a lot to do. I do have a question. What are people looking for when the smash open the, what I call, thunder rocks? There were a lot smashed and did not see that they took anything. Some where quite large. As always, thank you for any help.
Ruger9a Posted January 4, 2020 Posted January 4, 2020 Generally Thunder Rocks are cut and polished as shown below. Do they look similar to this one when split/broken?
caldigger Posted January 4, 2020 Posted January 4, 2020 In the rock/gem wirld they are commonly called "Thunder Eggs".
Planko Posted January 4, 2020 Author Posted January 4, 2020 I would think so but they are broken into many pieces. I have had a couple smaller ones cut before and they are very beautiful like yours above. I only used thunderstone because Thats is what they remind me of. These have a brown colored quartz in them. Like I said some of these are very large. 2-3 ft across. If I eat my cheerios I might just haul one out to cut it. I will take some pics.
Misha Posted January 4, 2020 Posted January 4, 2020 Are you referring to septarian concretions as the 'thunder rocks'?
Planko Posted January 5, 2020 Author Posted January 5, 2020 Nope, I have some of those from the northern part of the river. Smaller of course.
Planko Posted January 5, 2020 Author Posted January 5, 2020 No, that I do not. I try not taking my phone down in the river. I will next time though. My apologies.
Jackson g Posted January 5, 2020 Posted January 5, 2020 I would label it as Gyrode gentii. I found some pretty similar a few weeks back, and that's what I've labeled mine. Picture for comparison below.
Planko Posted January 5, 2020 Author Posted January 5, 2020 Thanks Jackson. I have a few of the darker colored ones also. Gastropods are my favorite.
The Jersey Devil Posted January 6, 2020 Posted January 6, 2020 Gastropod also might be Pyropsis “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal
Planko Posted January 6, 2020 Author Posted January 6, 2020 Well, could be it seems. Hummm..calling all gastropod experts.
Jackson g Posted January 6, 2020 Posted January 6, 2020 17 hours ago, Planko said: Well, could be it seems. Hummm..calling all gastropod experts. I'm going off of the location for mine, as I found mine at the local Ladonia park where similar have been found. It very well could be a Pyropsis, gastropods aren't really my thing but it does look similar. With them being internal molds, there aren't any outside diagnostic features to go off of for certainty.
Planko Posted January 7, 2020 Author Posted January 7, 2020 I think you might be on to something. My Gyrode have a suture that is protruded. This one is rather flat like the Pyropsis.
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