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Showing results for tags 'chert'.
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Hello, everyone, these fossils were collected from the basal Cambrian in South China, all of which are organic. But I do not know what are they? Does anyone can identify them. Please see the attachments! Many thanks.
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I found this on one of our mts in middle Tennessee. I'm concerned it may be bone and not chert like I had found later near my home.
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I really almost dismissed it as a rock but second guessing. Could this be a shark tooth possibly? It was found along with crinoids and horn corals in a creek in Nashville area Tennessee
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What causes certain pieces of chert to have a plastic look and texture after an acid test
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On this piece of chert it appears to have either an iron or copper coloring at the top but a green undertone at the bottom. On the second picture I’m assuming that was caused by erosion. What would create the green undertone coloring?
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does anyone see anything that resembles any kind of dermis of any kind in these photos
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Like in the title, I am unsure if this is even a fossil.
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Found this at the edge of a shallow stream bed that flies down from Smoky Mountain region in East Tennessee at Indian Boundary Lake near Tellico Plains Tennessee at edge if Cherokee National Forest. It measures 2" long, 1.75" at widest 1/2" deep at deepest. A bit more flat on one side. Cross section shows a thin outer layer. Outside look reminds me of wood but I don't know. Looks like photos too big so I will load another below.
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Fossils from the Baksteenkalk, Netherlands (includes trilobites)
Oxytropidoceras posted a topic in Documents
van Keulen, P. and Rhebergen, F., 2017. Typology and fossil assemblage of Sandbian (Ordovician) 'baksteenkalk': an erratic silicified limestone of Baltic origin from the northeastern Netherlands and adjacent areas of Germany. Estonian Journal of Earth Sciences, 66(4), pp.198-220. Link to open access PDF file Winterman, W., 1990. Baksteenkalk. Grondboor & Hamer, 44(1), pp.11-13. Rhebergen, F., 2001. Trilobieten in noordelijke zwerfstenen in Nederland. GEA, 34(3), pp.39-43. Rhebergen, F., 1993. Ordovicische zwerfstenen i-
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All of my pieces come from a creek on Crowley’s Ridge in northeast Arkansas near the Missouri border. Crowley’s Ridge is believed to be about 10,000 years old. Located as far north as New Madrid, Missouri and as far south as Wynne, Arkansas, it is believed by some to be a former bank of the Mississippi River. At some point, it may have even been an island. Some research has suggested that the ridge was affected by volcanic activity in the distant past. Today, Crowley’s Ridge is known for its gravel pits, uplifts, and bluffs which were likely caused by t
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Hi, I came across this rock on the beach in Eastern Canada. I was wondering if anyone else finds it interesting. The marks on it resemble bite marks and I cannot let it go until someone helps me figure out what it is. Thanks! It's approximately 12 cm long.
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Hi everyone. I found this piece of Missouri chert in a creek bed, but I am not sure if it is coral or just erosion. I have seen other pictures of coral that look similar to this, but I do not see any biological pattern or clues that this was once alive like you can see in something like a crinoid. Any help or tips would be appreciated
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My husband is an irrigator in the Midland, TX area. A client of his had this in their backyard and gave it to my husband. It was found on the clients ranch originally near Fort Stockton, TX. We thought it was a bone because, well, just look at it lol. We were able to take it to a gem and mineral show yesterday to have it looked at and the concenous was although very interesting, it was chert. Now all the research I've been doing on chert and I have yet to find anything like this. Reverse fossil maybe?
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I've had this ax for several years. It comes from Denmark, or at least that area. Made of ground stone, it contains a fossil that is approximately 5mm long. I have wondered since I got this what that fossil could be. Any help is appreciated. The ax: The fossil:
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I found 2 of these when I put in a septic system along with crynoid calyxs, nautilus, and ammonite peices. Wouldn’t expect to find anything like this here.
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Hi, I was driving along the NY State Thruway recently and stopped at several roadcuts in Devonian limestones. I picked up a big chunk of chert that had interesting fossils in it. I think they are crinoid column segments seen edge-on and end-on, but I'm not sure. They are all encased in chert and they are not CaCO3 (they don't fizz in HCl). Does anyone have any other ideas? Thanks for any help, Bob
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Looking through my typical pile of gravel I saw this, I thought maybe it was wishful thinking because I see spiral shapes all the time. I picked it up and noticed it had traces of shell like material tracing the spiral. Could it be an ammonite encased in chert like this, or just a worn down snail of some other sort?
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Picked this up on the beach today. I'm still a noob, but having lived in East Sussex for a few months I've become pretty adept at identifying our local fossils (if it isn't a sea urchin, it's a sponge), but this new thing has me stumped! Initially I thought it was some kind of coral, then on further inspection I thought maybe the top part of an ammonite (or mollusc) shell. Now I'm coming back round to thinking it might be an echinoid, but I can't explain the strut-like structures (surely not spines!?). The Details This was found on the beach near Rottingdean, East Suss
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Friend of the family has this on display in an aquarium. Looks like it’s in fossiliferous chert. Found in Wayne County, MO. Any ideas?
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Hi everyone! Holidays mean more time to photo and post. As previously mentioned in my previous post, I am finding a lot of fossil impressions and voids in chert and mudstone on a small artist residency and farm in Kingsbury, Texas, in Guadeloupe County. And some petrified wood. Most of the casts I find are pelecypods and some gastropods; however I am finding some other stuff, some of it total mystery. This time I will post the mystery items first. Let me know your thoughts! This first mystery (3 views) has tight incised lines around the darker shape - most evident in ce
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Wilcox Group, Texas (Guadeloupe County) finds and mysteries
KingsburyFossilHunter posted a topic in Fossil ID
Hi everyone! For the last few months I have been finding lots of fossil imprints in mixed chert cobble on a artist residency/farm in Kingsbury, Texas near Seguin (in Guadeloupe county). They are digging up some of the cobble/gravel to line the roads and walkways on the farm, which means that everything gets spread out nicely! Plus there is the 'quarry' itself. The USGS map says that the area is Wilcox Group, undivided, and/or Willis Formation, and I am looking at mudstone, chert, a little bit of sandstone, gravel, some petrified wood. In terms of age I think it matches up with Eoce -
leaning toward banded chert but double checking... found a couple of these....interesting stone.
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I'm currently working with a monster nodule. 14.5 inches around. Had some chipping at the bottom with a small amount on one side. After several freeze/thaws the whole lower section is now exposed from chipping & flaking with the smaller area on the side enlarged as well. Nice off white, almost powdery exterior with a med dark brown interior. I'm hoping there's at least something in it and that the something is larger than a pea. Nodule has this tiny, curious almost nipple like area on top. Anyone have any experience with one this size? Am I possibly wasting my time? There are several hairl
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I would like to better understand conchoidal fracturing of chert/flint. I have many pieces where the fracturing is obviously conchoidal, but some others where this isn't obvious. I'll post photos in hopes that knowledgeable folks can point out circular characteristics that I'm not seeing. In this first one I can see small conchoidal divots. It's the larger seemingly straight(long lines) fractures where I don't see conchoidal characteristics.
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I found this rock about 20 years ago while hiking a piece of property I was considering buying, which was perched on a high bluff over looking the Illinois River. I picked it up because of the beautiful druzy crystals on it. I have been cleaning quartz crystals this week, which I found a few weeks ago near Hot Springs, AR. I was using Iron out to remove the iron stains. Anyway, I have kept this rock in my kitchen window so it could catch the sunlight and sparkle for me all these years. It is not the finest home decor, but definitely my style. I picked it up today to
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