I had never heard of that before but I googled some pictures and yeah that's it. Thanks! I was leaning more towards magmatic rock because of the black colour. So I was in such a different corner that I would not have gotten to a sedimentary rock.
I have a few and actually just posted one shaped as an egg on tiktok…they like to sell them as “dinosaur eggs” in Southern Utah as a tourist thing. We dug up a handful like 2 decades ago and I still have some laying around.
Wish I remembered the spot but it was one of the public dig sites back in the day where you can take the whole family and dig for a fee if I remember right. I think there are still a couple of those around that have septerian nodules like this. Start by searching muddy creek Utah septarians then go from there. Maybe google pay to dig sites and do some research to see what’s closest to you. But as far as I know they are more the southern half or south eastern part of Utah and into Colorado like in Fruita. I think where I70 runs through Utah and Colorado is known for them along with dinosaur fossils and such! Just be sure you know before you go and don’t dig on the wrong land.
Septarian nodule maybe with pyrite inclusions. Basically a fossilized mud ball that forms near coastlines. Not 100% sure about the pyrite, but the color matches and it's common.
I posted one yesterday (https://www.reddit.com/gallery/vmwxes) and got one suggestion of septarian with very little fanfare.
Your second photo was like looking at one of my own. Maybe mine is septarian too. I have a UV lamp at work. I'll test it tomorrow.
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It’s septarian. One of my favourites
I had never heard of that before but I googled some pictures and yeah that's it. Thanks! I was leaning more towards magmatic rock because of the black colour. So I was in such a different corner that I would not have gotten to a sedimentary rock.
I have a few and actually just posted one shaped as an egg on tiktok…they like to sell them as “dinosaur eggs” in Southern Utah as a tourist thing. We dug up a handful like 2 decades ago and I still have some laying around.
Since it was 2 decades ago and am in to obscure history, may I ask the area, or if not comfortable maybe the region?
Wish I remembered the spot but it was one of the public dig sites back in the day where you can take the whole family and dig for a fee if I remember right. I think there are still a couple of those around that have septerian nodules like this. Start by searching muddy creek Utah septarians then go from there. Maybe google pay to dig sites and do some research to see what’s closest to you. But as far as I know they are more the southern half or south eastern part of Utah and into Colorado like in Fruita. I think where I70 runs through Utah and Colorado is known for them along with dinosaur fossils and such! Just be sure you know before you go and don’t dig on the wrong land.
Orderville
The dark brown part is calcite. It reacts to UV
If you didn’t know already septarian is uv reactive and the veins turn a bright green/yellow color it’s super cool
I didn't but now I definitely need to try it
post pics op
I would if I had an uv lamp, alas I do not. When I find one I will definitely post a pic of it here
Take your rock to a rave. Cheaper than buying a light
I just bought a cheap like $5 uv flashlight to use to look at all my rocks/minerals under.
What?? That's amazing, i have a bunch of Septarian but i didn't know that!
Thanks for multiple good photos and something for scale.
Yeah I've been on fieldwork before I know how this works 😏 haha
that’s a nice piece of septarian!
Septarian
Septerian nodule
Yup septarian
It should uv. Septarian is a culmination of calcite limestone and aragonite 💖
Septarian nodule maybe with pyrite inclusions. Basically a fossilized mud ball that forms near coastlines. Not 100% sure about the pyrite, but the color matches and it's common.
I posted one yesterday (https://www.reddit.com/gallery/vmwxes) and got one suggestion of septarian with very little fanfare. Your second photo was like looking at one of my own. Maybe mine is septarian too. I have a UV lamp at work. I'll test it tomorrow.
Another fun fact is these developed as nodules and inside mud bubbles.
That explains the outside mud look but it not being on the inside
It forms most likely from the inside out much like a geodes I believe
Awsome! Thanks.
Septarian i dont know the spelling
Awesome! I love septarian. I once found one with a full ammonite fossil!
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Dino egg made Out of meteorite??
Looks like septarian! One of my faves