Post AsOE3cXCsDAHHgb7om by kfanyo@infosec.exchange
(DIR) More posts by kfanyo@infosec.exchange
(DIR) Post #AsOBtJJ7Iz8WqcxnHM by futurebird@sauropods.win
2025-03-24T19:22:28Z
0 likes, 0 repeats
Is there a such thing as a "naturally occurring ceramic" eg. clay is fired in nature to make a ceramic?Or is a ceramic by definition man-made... or simply unlikely to not be man made without wild circumstances.
(DIR) Post #AsOC5h46ndSo0TqeVk by jmax@mastodon.social
2025-03-24T19:24:41Z
0 likes, 0 repeats
@futurebird Obsidian.
(DIR) Post #AsOCHgfM6rjeF9zODo by TommyTorty10@infosec.exchange
2025-03-24T19:26:51Z
0 likes, 0 repeats
@futurebird maybe after a wildfire, but I dont know if there's a term for it or anything
(DIR) Post #AsOCIzw9wiJ0IjTS9w by futurebird@sauropods.win
2025-03-24T19:27:07Z
0 likes, 0 repeats
@jmax I guess... but that's glass... which is kind of a ceramic but ... you know.I want to see Porcelain Cliff of Dover
(DIR) Post #AsOCSm4yK9QgDYG31s by frank@f.reun.de
2025-03-24T19:26:17Z
0 likes, 0 repeats
@futurebird Damn, what a thought. Now I'm interested. 😅
(DIR) Post #AsOCWbMu5Xau9nTDNo by futurebird@sauropods.win
2025-03-24T19:29:31Z
0 likes, 0 repeats
@zoec Then... there could be ceramics with a glaze even!
(DIR) Post #AsOCfxkiEbGUBb4Q1A by michael_w_busch@mastodon.online
2025-03-24T19:31:12Z
0 likes, 1 repeats
@futurebird "Unique formation of organic glass from a human brain in the Vesuvius eruption of 79 CE"https://www.nature.com/articles/s41598-025-88894-5The volcano was what did the vitrification in that case.
(DIR) Post #AsOCir7FMieITJzRUe by nora@blob.love
2025-03-24T19:31:19Z
0 likes, 0 repeats
@futurebird oh!! i don't know when it occurs naturally but someone was sharing stuff on bluesky about wildfires and said they can get up to at least 2500F, which is hot enough to fire porcelain (porcelain requires the hottest temperature to fire of all the clays) (i wanted to know how hot wildfires could get in terms i could understand so i looked it up) so it must happen!
(DIR) Post #AsOCoox6K4NfV05Z32 by futurebird@sauropods.win
2025-03-24T19:32:52Z
0 likes, 0 repeats
@michael_w_busch That is creepy and gives me about 999 new story ideas that I did not need right now... I love it.
(DIR) Post #AsOCsmVzKIrV69INwO by brhfl@digipres.club
2025-03-24T19:33:33Z
0 likes, 0 repeats
@futurebird outside of the glass discussion, i wonder if type ii - soil/clay - fulgurites might count? definitely an example of heat from nature changing the properties of natural clay, but i’m not sure if the end result is quite akin to human-fired clay…
(DIR) Post #AsOCtv80mus06LcjvU by lerxst@az.social
2025-03-24T19:33:46Z
0 likes, 0 repeats
@futurebird @jmax Etymology isn't everything, but the word derives from the Greek for "pottery" so it seems to suggest that "ceramic" is a technology. Any non-organic and non-metallic thing heated to high temperature might have ceramic properties, but it seems human intent is part of what makes "ceramic" ceramic.
(DIR) Post #AsOCvLf1ctZ8gDkLbM by CStamp@mastodon.social
2025-03-24T19:33:59Z
0 likes, 0 repeats
@futurebird Aside from a volcano turning sand or brains into glass, I wondered about indigenous pottery. Some of it was dried in the sun to cure but it seems it was discovered early on that heating in a fire would make it stronger.
(DIR) Post #AsOCwSGcY82jSVrKds by llewelly@sauropods.win
2025-03-24T19:34:15Z
0 likes, 0 repeats
@futurebird I am sure I have read that there are known geological examples of lava naturally coming into contact with naturally occuring clay and naturally sintering it. I read about this in a pottery book when I did wheel-thrown pottery, and unfortunately I no longer have the book.
(DIR) Post #AsOD3C1rJwbT7mARfM by mathowie@xoxo.zone
2025-03-24T19:35:24Z
0 likes, 0 repeats
@futurebird In Oregon up until the 1960s they used to make natural brick by just digging up heavy clay soils into brick shapes and leaving them out in the sun for a month to firm up. https://www.oregonhistoryproject.org/articles/historical-records/brick-making-near-portland-oregon/
(DIR) Post #AsOE3cXCsDAHHgb7om by kfanyo@infosec.exchange
2025-03-24T19:46:43Z
0 likes, 0 repeats
@futurebird A lava flow over really heavy clay soil/river bottom? Seems plausible at first blush...
(DIR) Post #AsOEeNbbLHp1hHBJZY by australopithecus@mastodon.social
2025-03-24T19:53:21Z
0 likes, 0 repeats
@futurebird I mean, aren't all rocks naturally-occurring ceramics? 🤔
(DIR) Post #AsOGa02zBoBVNl1tr6 by futurebird@sauropods.win
2025-03-24T20:15:00Z
0 likes, 0 repeats
@michael_w_busch "Moreover, exceptionally well-preserved complex networks of neurons, axons, and other neural structures have been revealed by Scanning Electron Microscope (SEM)"This is giving me vertigo.
(DIR) Post #AsOH8nNoGZUeEyMUHQ by kate@aus.social
2025-03-24T20:21:14Z
0 likes, 0 repeats
@futurebird I feel this is something @potterybyosa knows or thinks about. The answers are amazing to me.
(DIR) Post #AsON8WD2iW0MhbZoiu by hattifattener@wandering.shop
2025-03-24T21:26:43Z
0 likes, 1 repeats
@llewelly @futurebird @nora Coal seam fires (natural or human-started) can heat the surrounding rock enough to transform it too. Looks like the geology term for this is "pyrometamorphic" rock — includes coal fires, lava touching other rocks, etc.
(DIR) Post #AsOQmyC6OBZgwR7JUu by Unixbigot@aus.social
2025-03-24T22:09:20Z
0 likes, 0 repeats
@futurebird well, slate is metamorphic clay…
(DIR) Post #AsOb5KDIGB5BzG479s by burnitdown@beige.party
2025-03-25T00:04:33Z
0 likes, 0 repeats
@futurebird @zoec archaeologists believe they have found Soddom, Gomorrah, and the lesser-mentioned three other nearby cities, in a completely different place from where they were looking but still near the Dead Sea. what they found fits the Biblical description of their destruction in a truthful way. they found skeletons, nearly all of which had broken bones from bodies being smashed against hard things by some kind of incredible force, like a huge explosion. near the skeletons, they found pottery which had all been partially glazed on the same side, facing the direction the blast came from. this culture did not glaze pottery at all. then they started finding a glassy-sandy amalgam all over the area. the only other place this amalgam has been found is at the Los Alamos nuclear bomb test site. the theory is, because there is no crater, that two large objects (the "angels" in the Bible story), possibly pieces of a comet or an asteroid, fell to earth and air-burst over those five towns, causing an explosion hundreds of times more powerful than the bombs dropped on Hiroshima and Nagasaki, described in the Bible as "a column of smoke, like a chimney".
(DIR) Post #AsOb93ViIq4bLHSaRM by futurebird@sauropods.win
2025-03-25T00:05:26Z
0 likes, 0 repeats
@burnitdown @zoec Where did you read about this? It sounds amazing.
(DIR) Post #AsOcGH6cFqEFUKj9CS by burnitdown@beige.party
2025-03-25T00:17:54Z
0 likes, 0 repeats
@futurebird @zoec there are a few documentary shows about it. https://www.youtube.com/watch?v=ta-4pWsMTiA