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Showing results for tags 'sandstone'.
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Costa Rican Copal "B" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])
Barrelcactusaddict posted a gallery image in Member Collections
![Costa Rican Copal "B" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](//content.invisioncic.com/e327962/monthly_2022_03/small.SAM_3169.JPG.097cadfb65434b097b5e51a2a79d35f3.JPG)
From the album: Fossil Amber and Copal: Worldwide Localities
6.4g specimen measuring 40x25x14mm (see related entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a slight layer of sandstone matrix, and the clarity is variable throughout the piece.© Kaegen Lau
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Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])
Barrelcactusaddict posted a gallery image in Member Collections
![Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](//content.invisioncic.com/e327962/monthly_2022_03/small.SAM_3174.JPG.8c6d1bac3f00824d21f13c951b1980ee.JPG)
From the album: Fossil Amber and Copal: Worldwide Localities
10.0g specimen measuring 48x40x11mm (see associated entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a light layer of sandstone matrix. -
Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])
Barrelcactusaddict posted a gallery image in Member Collections
![Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](//content.invisioncic.com/e327962/monthly_2022_03/small.large.large.SAM_3176.JPG.ea28b2802d727006ccfec3fb2b470ae2.JPG)
From the album: Fossil Amber and Copal: Worldwide Localities
10.0g specimen measuring 48x40x11mm (see associated entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a light layer of sandstone matrix. -
Was examining several of my rocks (sandstone & mudstone) that have light-coloured spots, such as the images of 3 rocks below. I read "Reduction Spots in the Mesoproterozoic Age: implications for life in the early terrestrial record" (Spinks, Parnell, Bowden) -- well, the little that I could understand -- and was wondering whether any of these 3 rocks might be an example of this. The spots in my rocks do not seem to have the "dark concretionary cores" that the article says are often present in the spots, but I was curious to know more. I'm having doubts but thought I'd ask. Thanks for any ideas. Rock #1: Rock #2: Rock #3:
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Ajkaite (Ajka Coal Fm./Csehbánya Fm., ~86.8-83.4 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
"Ajkaite" Ajka-Csingervölgy, Ajka District, Hungary Ajka Coal Fm./Csehbánya Fm. (~86.8-83.4 Ma) Chemical Composition: C: 80%, H: 10%, O: 9%, S: 1-2% Refractive Index: 1.541 Specific Gravity: 1.0 Weight of Specimen: 2.4g Dimensions: 18x14x13mm Lighting: Longwave UV (Convoy S2) Ajkaite is a fossil resin with chemical composition markedly different from succinite (i.e., Baltic amber); it also contains low levels of sulfur. Ajkaite is found within layers of fossiliferous marl (numerous fossil shells can be seen in the matrix in the images): the marl is also accompanied by layers of coal, sand, sandstone, and siltstone. Ajkaite is found in both the Ajka Coal Fm. and the Csehbánya Fm., which two Formations are roughly the same age, and laterally transition into each other. The coal mines roughly 4km southeast of Ajka first began production in 1872, and continued until the last mine was closed on September 3, 2004. Now, Ajkaite specimens can only be found in spoil-banks or refuse piles (Jókai coal refuse) near the city. Various arthropods have been found trapped within Ajkaite, e.g., Araneae (spiders), Diptera (flies), Coleoptera (beetles), and Hymenoptera (ants, wasps). Since much of this amber is typically cloudy, X-ray tomography (CT scan) is often used to visually document the inclusions. Sources: https://www.sciencedirect.com/science/article/pii/S0195667121003451?fbclid=IwAR2in5-wXBSojVWPQKkSwSuEPuZ5Wd77Z5I0iYfRPWHbc5PAHI7gegfmr3o https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2- https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2-JvTOC8CPgd4eft49V5vrItPEtiXd1iWmKkjzd8Vdw75ZXmjGGOIz5jU https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg© Kaegen Lau
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Ajkaite (Ajka Coal Fm./Csehbánya Fm., ~86.8-83.4 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
"Ajkaite" Ajka-Csingervölgy, Ajka District, Hungary Ajka Coal Fm./Csehbánya Fm. (~86.8-83.4 Ma) Chemical Composition: C: 80%, H: 10%, O: 9%, S: 1-2% Refractive Index: 1.541 Specific Gravity: 1.0 Weight of Specimen: 2.4g Dimensions: 18x14x13mm Lighting: Longwave UV (Convoy S2) Ajkaite is a fossil resin with chemical composition markedly different from succinite (i.e., Baltic amber); it also contains low levels of sulfur. Ajkaite is found within layers of fossiliferous marl (numerous fossil shells can be seen in the matrix in the images): the marl is also accompanied by layers of coal, sand, sandstone, and siltstone. Ajkaite is found in both the Ajka Coal Fm. and the Csehbánya Fm., which two Formations are roughly the same age, and laterally transition into each other. The coal mines roughly 4km southeast of Ajka first began production in 1872, and continued until the last mine was closed on September 3, 2004. Now, Ajkaite specimens can only be found in spoil-banks or refuse piles (Jókai coal refuse) near the city. Various arthropods have been found trapped within Ajkaite, e.g., Araneae (spiders), Diptera (flies), Coleoptera (beetles), and Hymenoptera (ants, wasps). Since much of this amber is typically cloudy, X-ray tomography (CT scan) is often used to visually document the inclusions. Sources: https://www.sciencedirect.com/science/article/pii/S0195667121003451?fbclid=IwAR2in5-wXBSojVWPQKkSwSuEPuZ5Wd77Z5I0iYfRPWHbc5PAHI7gegfmr3o https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2- https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2-JvTOC8CPgd4eft49V5vrItPEtiXd1iWmKkjzd8Vdw75ZXmjGGOIz5jU https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg© Kaegen Lau
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Ajkaite (Ajka Coal Fm./Csehbánya Fm., ~86.8-83.4 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
"Ajkaite" Ajka-Csingervölgy, Ajka District, Hungary Ajka Coal Fm./Csehbánya Fm. (~86.8-83.4 Ma) Chemical Composition: C: 80%, H: 10%, O: 9%, S: 1-2% Refractive Index: 1.541 Specific Gravity: 1.0 Weight of Specimen: 2.4g Dimensions: 18x14x13mm Ajkaite is a fossil resin with chemical composition markedly different from succinite (i.e., Baltic amber); it also contains low levels of sulfur. Ajkaite is found within layers of fossiliferous marl (numerous fossil shells can be seen in the matrix in the images): the marl is also accompanied by layers of coal, sand, sandstone, and siltstone. Ajkaite is found in both the Ajka Coal Fm. and the Csehbánya Fm., which two Formations are roughly the same age, and laterally transition into each other. The coal mines roughly 4km southeast of Ajka first began production in 1872, and continued until the last mine was closed on September 3, 2004. Now, Ajkaite specimens can only be found in spoil-banks or refuse piles (Jókai coal refuse) near the city. Various arthropods have been found trapped within Ajkaite, e.g., Araneae (spiders), Diptera (flies), Coleoptera (beetles), and Hymenoptera (ants, wasps). Since much of this amber is typically cloudy, X-ray tomography (CT scan) is often used to visually document the inclusions. Sources: https://www.sciencedirect.com/science/article/pii/S0195667121003451?fbclid=IwAR2in5-wXBSojVWPQKkSwSuEPuZ5Wd77Z5I0iYfRPWHbc5PAHI7gegfmr3o https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2- https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2-JvTOC8CPgd4eft49V5vrItPEtiXd1iWmKkjzd8Vdw75ZXmjGGOIz5jU https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg© Kaegen Lau
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Ajkaite (Ajka Coal Fm./Csehbánya Fm., ~86.8-83.4 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
"Ajkaite" Ajka-Csingervölgy, Ajka District, Hungary Ajka Coal Fm./Csehbánya Fm. (~86.8-83.4 Ma) Chemical Composition: C: 80%, H: 10%, O: 9%, S: 1-2% Refractive Index: 1.541 Specific Gravity: 1.0 Weight of Specimen: 2.4g Dimensions: 18x14x13mm Ajkaite is a fossil resin with chemical composition markedly different from succinite (i.e., Baltic amber); it also contains low levels of sulfur. Ajkaite is found within layers of fossiliferous marl (numerous fossil shells can be seen in the matrix in the images): the marl is also accompanied by layers of coal, sand, sandstone, and siltstone. Ajkaite is found in both the Ajka Coal Fm. and the Csehbánya Fm., which two Formations are roughly the same age, and laterally transition into each other. The coal mines roughly 4km southeast of Ajka first began production in 1872, and continued until the last mine was closed on September 3, 2004. Now, Ajkaite specimens can only be found in spoil-banks or refuse piles (Jókai coal refuse) near the city. Various arthropods have been found trapped within Ajkaite, e.g., Araneae (spiders), Diptera (flies), Coleoptera (beetles), and Hymenoptera (ants, wasps). Since much of this amber is typically cloudy, X-ray tomography (CT scan) is often used to visually document the inclusions. Sources: https://www.sciencedirect.com/science/article/pii/S0195667121003451?fbclid=IwAR2in5-wXBSojVWPQKkSwSuEPuZ5Wd77Z5I0iYfRPWHbc5PAHI7gegfmr3o https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2- https://www.nature.com/articles/s41598-021-03573-5.pdf?origin=ppub&fbclid=IwAR2-JvTOC8CPgd4eft49V5vrItPEtiXd1iWmKkjzd8Vdw75ZXmjGGOIz5jU https://pubs.usgs.gov/bul/1627/report.pdf?fbclid=IwAR142uewIjbJxH2oQDfnoX3j4C0K-cH33lTKfDd7AePr-rfIUQCkPylTmXg© Kaegen Lau
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just south of Austin TX. They dug this up at the graveyard this past week so i can't actually take it home (just wouldn't be classy). but i still wanted to know what it was. theres only really water fossils in the area so i assume some kind of shell.
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south of Austin Texas, halfway up a small mountain, dug from a pit in the ground the one circled in red I'm pretty sure is just sandstone, but i thought I'd check. The other one im curious about. The camera didn't capture it well but its embedded on crystal stone, opaque, yellowish. I've found one before with the same pattern but i lost it. is it a type of coral? I found a different type of coral in the same spot before.
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I found this mysterious fossil in Richland, Michigan, and don't know what to make of it. It appears to have a fish scale and lots of bone fragments, as well as a piece of coral, in smoothed (Devonian?) sandstone. I don't know my fish very well; can anyone help?
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Is trying to split this crappy brittle star fossil worth it?
idiot posted a topic in Fossil Preparation
I found this worn piece of Berea Sandstone that seems to have once hosted a bunch of brittle stars on the face. How would you calculate the risk:reward ratio wrt splitting it to see if there are pristine brittle star fossils inside, and if so, what's the best method to expose potential fossils without an air scribe and without jeopardizing the brittle stars that are exposed? It's about an inch thick and has a very, very, very slight hint of a fissure near the face. Sorry for the poor pics.
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This is a fossil of what I think was a small crustacean. It was found in a tributary very close to the Shenandoah River. It is sandstone. The view in 1 is the best example however in 6 there are what appears to be the noses of other specimens sticking out of the matrix. Oddly enough they all seem to be facing in the same direction, perhaps a feeding pattern. I would sure like some help identifying and dating this specimen. I'm sure there are more where this one came from. Thanks in advance, Phil Good--------Northern Va.
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I found them in abandoned sandstone quarry around 10km West from Chmielnik, Świętokrzyskie, Poland. I have no idea what they can be. Can anyone help?
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Hi! I found this sponge on a beach in Gdynia Orłowo, Poland. It was embedded in sandstone.
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Here’s another phytosaur I’m starting work on. This one is missing some pieces and we are hopeful the collector can find more this spring. Until then, I have some work cut out for me. It may not look like much now but there appears to be a fully inflated skull under all that sandstone! I’ve already found where some of the random pieces in the trays did and have begun gluing and consolidating. I can see the occipital poking out of the back of the block as well! Finally, a phytosaur that is more prep than puzzle. There are fresh breaks on the maxillae where more should fit. for those bits showing up in a few months.
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Hello All, I came across this fossil at a local rock and gem store and I'm having a go at preparing it. Apparently it is from Indonesia and I believe is a Thalassina, although with the spindle like legs I haven't seen anything that looks like an exact match. Here's my question; the fossil is covered with a sticky coarse sandstone, and I'm wondering how much of the matrix I should leave between joints in the tail and between the legs on the main body. I'm not sure if removing too much matrix will just cause the fossil to fall apart, but I suspect it might. Has anyone had experience with these fossils before and be able to lend a rookie some advice? Cheers, Ryan
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My husband purchased this landscaping rock in a pallet from a Bath/Bethlehem, PA area supplier about 20 years ago. Most of the supplier’s stones are from Pennsylvania. I’m guessing this is sandstone??? I’ve been staring at this rock for sometime and before I place it back, I wanted to get some opinions if anyone sees any type of tracks on this rock? I feel like my fingers fit in the specimen very nicely. Can’t tell if I’m seeing 3, 4 or 5 “toes” ? Maybe I’m just an imaginative newbie. Thanking anyone in advance who looks at these photos.
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Given a sample of sandstone that appears uniform to the naked eye, how can one determine where the bedding planes are? Are there magnification/chemical or other tricks in our tool box?
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We found this yesterday outside of Sedan Kansas on a 4-H Geology field trip. It was with a thinner layer of sandstone just below a thick layer of Ireland sandstone. One of the leaders thought it was ripple marks. I also thought it looked like ripple marks but wanted a second opinion. We would hope to be able to display this in her geology exhibit as a fossil if it is truly ripple marks.
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Eagle Ford sandstone, found a cool trace fossil and curious what made it. Could only find one somewhat distinguishable thing and really can't tell what it is other than looks like shell. Lots of burrows and maybe worm? Found several little circles with dot in the middle but hard to get all images. The trace looks like a sperm best way to describe it.
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Hello I found this piece of sandstone along the Athabasca river just south of Fort McMurray, Alberta, Canada. Since it’s sandstone I’m assuming it came from either the Mcmurray (late barremian or early Aptian) or Grandrapids (Albian) formation although my geology skills are not great. I tried to do some googling on what it could be but I found no results since I couldn’t be specific enough since I don’t really know what I’m doing. Any ideas? I attached an image of the location for fun that I took a while before I found the rock. I found it to the right of the creek thanks
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Hello everyone I wanted to know what exactly I have inhereted from my great-grandfather, he mainly collected minerals and other geological stuff and I never really managed to talk with him about the stuff sadly. While I don't know the exact location of where it was found I am able to pinpoint the region to the southern region of Palatinate in Germany due to the Red Sandstone found in the region and (what seems to be) a small Melanite on the stone with it, which is common in the neighbouring state where I also have relatives which he often visited during his lifetime. All help is appreciated if you have any idea what species it is. Thank you
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Went down to the creek this morning to release some fingerling blue gill I raised and stumbled across this. Picked it up because I liked the unusual shape but then noticed one of the grooves looked altered, like it was rubbed or ground. Last year I found a Trinity sinker and Castorville arrowhead in same spot, so started researching artifacts and saw arrow shaft straighteners which this resembles. It doesn't look straight at first glance but a pencil fits in there perfectly. Coincidental and geological? Also found this neat peice of rock and wondering if it's flint? This area of creek is QAL.
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Greetings all! Recently pulled this from south shore Lake Michigan near the Mack Straights. Curious as to what the fossilized material is inside the upper shell half which is approximately 2.5cm across. Any ideas? Bonus points if you can identify the shell too Thank you!
![Costa Rican Copal "B" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](http://content.invisioncic.com/e327962/monthly_2022_03/small.SAM_3169.JPG.097cadfb65434b097b5e51a2a79d35f3.JPG)
![Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](http://content.invisioncic.com/e327962/monthly_2022_03/small.SAM_3174.JPG.8c6d1bac3f00824d21f13c951b1980ee.JPG)
![Costa Rican Copal "A" (Sandstone Deposits, Indeterminate Age [~2.58 Ma-Recent])](http://content.invisioncic.com/e327962/monthly_2022_03/small.large.large.SAM_3176.JPG.ea28b2802d727006ccfec3fb2b470ae2.JPG)
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