Geology wrapped 2022:
You ate 47 rocks this year!
The amount of times you touched lava is 2! That is 90% more than last year!
You are in the top 0.01% to visit the mines!
Your favorite fumarole to huff is the sulfur vents!
Your 2022 top minerals are:
Fluorite
Apatite
Dioptase
Olivine
Cinnabar
Your uranium ore has exposed you to 14.3 Sv of radiation this year!
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aghast that my mother does not seem to find iceland as stunning and fascinating as a potential destination as I do, and in the middle of the indignant rant that followed I described the geological landscape as "Ireland, but punk". Sad to say she does not know enough about iceland OR punk to understand what an inspired comparison that was
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Mineral Swag Tournament Finals
Okay y'all, this is it. The FINAL for the Mineral Swag Tournament.
Fluorite.
Fluorite is a fantastic mineral. It would not have gotten this far otherwise. It comes in a ton of colors, it naturally forms both octahedra and cubes (and massive deposits), and it show brilliant bright blue color under UV light. Fluorescence (the phenomena) is named that because of fluorite!
It also does this fun thing (that other minerals do as well, but it is common among fluorite) where it changes color as it forms because of changing impurities in the solution from which it grows! Elements like iron, copper, manganese, chromium (and more!) can replace individual ions in fluorite's chemical structure and cause the light to reflect different wavelengths and we therefore see that as a different color. This can also happen if a fluorite ion is missing because the sample has been irradiated (for example) and NOTHING replaces it and so the light still reflects in a different way! That is one of the ways we get purple fluorite and this method of producing color is known as color centers.
Of course, not all fluorite fluoresces. Not all fluorite forms cubes or octahedra. Some fluorite is colorless. Some of it looks like an ugly little piece of translucent rock. Or a vein of purple mineral in a crack between two other rocks. It would be irresponsible for me to insinuate that all fluorite is this majestic.
But there are some properties that you will always find in fluorite. It has four directions of cleavage. It is the defining mineral for a 4 on the Mohs hardness scale. It will always be made of calcium and fluoride in a 1:2 ratio. These things are some of what define fluorite as a distinct mineral!
Opal.
Opal is a beautiful gemstone. Please note that I did not call it a "beautiful mineral" because it is not technically a mineral. It is a solid, inorganic substance with a defined chemical formula, but it lacks the specific crystal structure which minerals MUST have to be considered a mineral.
This crystal structure is the entire reason why fluorite is capable of forming cubes and octahedra. And why garnet forms dodecahedra and beryl forms columns and so on. Opal only comes in those fun little oval shaped stones because it was cut that way! Fluorite forms cubes because it just knows how. Otherwise, opal forms shapeless masses that fracture rather than cleave (fluorite cleaves--four ways). That being said, opal's lack of crystal structure allows it to sometimes be iridescent.
After all, there is a reason opal made it this far. When it shines, it is beautiful. There are several varieties of precious opal (opal that displays its trademark play-of-color/iridescence) and they are all very fun to look at. These precious opals are made of microscopic silica spheres that light reflects off of in weird ways and causes opal to look like it is glittering with a dozen different colors.
However, one would be remiss to forget common opal! Some opal is milky white or a translucent blue, and if you're going to love opal at her fire opal, you better also love her at her common opal.
Here are some raw pieces of opal (common opal on the left). Note how they break irregularly. They have conchoidal fracture, which both quartz and normal glass (all of which are just silica) also have. I personally think conchoidal fracture is pretty neat.
Also, while the opals on the right would still be considered precious opal, they are what the average person is likely to find. Just little bits of iridescence here and there.
And, like fluorite, while not all opals have all of the cool features, they do have some similarities. They will always have conchoidal fracture if they break. And they will always be made of hydrated SiO2.
...That's all I have for these guys, I think! I hope I have been as impartial (and accurate) as possible while presenting these, your FINAL mineral swag contestants. If you have any questions or anything, let me know. The Rock Swag Tournament will start shortly after this concludes! Submit your rocks here! And specific rock formations or named rock varieties here!
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okay okay okay so i haven't been tism about this yet (publicly) but like i really need people to hear about this
for ages scientists have been trying to drill into the mantle with things like the kola super-deep bore hole and just a few days ago...
they still haven't.
BUT THEY DID HARVEST ROCK FROM IT AND THIS IS WHERE IT GETS COOL!
Geologists managed to extract a kilometer long core sample of mantle rock through the Atlantis Massif and a "tectonic window" which basically means mantle rock was pushed up into the crust by tectonic shifting and got close enough to the surface seafloor that they were able to use a bore drill to harvest samples
now the reason that this is a major breakthrough for geology (and i would use all caps but i don't want to scare some of my mutuals away from this) is that this KILOMETER long sample could potentially change a lot of the things we know about plate tectonics, magma convection currents, earthquakes (falls under plate tectonics but important enough to get it's own mention), and geology in general.
What they find from analyzing the sample might change what you learn in school and that is any scientists DREAM
I am actually shaking bc of how exciting this is and i need everyone around me to be doing the same
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god I fucken love rocks somuch!!!!!!!!!! and minerals and crystals and glass and lava and magma and geological formations and mountains and hills and rocks rocks rocks!!!!!!!! yeah!!!! rocks rock hell yeah!!! wahoo!!! yipee!!! and salts and ice and snow and sand and metamorphic rocks and ignious rocks and rocks make me so fukin happy!!!!!!!!!!!!!!!!! myeah!!!! and i want more rocks to add to the collection and i want more space to show more rocks becaus the more rocks the better and rocks!
also god please add more rocks in the next update and also give them to meeeeeeeeeeee also make a meteorite fall near my house so i can get it and add to the collection pleasepleasplepalspleaplspelapleplaslapelpslpaleplspaleplsp
rock are so cool and some are so hot and sexy and im going to marry a rock and minrals yeah!!!!!!!!
also yeah dirts cool too i like dirt it tastes nice and its moist and cool i like it :3
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hey y'all, i made a science discord server! Biodiverse is a wonderful LGBT+ centered community to hang out and connect with other science lovers about our interests! anyone is welcome regardless of experience, whether you're a casual enjoyer of any field or a certified professional, we'd love to have you!
the server is mainly focused on natural sciences; there's channels for discussing a wide variety of topics, from zoology to astronomy and more. we have a "living thing of the day" segment which features interesting info about plants, animals, and fungi! trivia questions are also frequently hosted. we plan to host server events soon like streaming documentaries and vc study sessions!
below is the discord invite link for anyone interested. stop by and say hello! hope to see you there!
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Triceratops frill fragment showing blood vessel grooves. I’ve posted a picture about the grooves in horns before, but this small fragment of Triceratops frill shows how well it can be expressed there too. The blood vessels that originally laid in those areas would have fed the overlying keratin covering.
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A pretty specimen from the crystal and mineral show. I wish I had paid more attention to the names! If anyone can identify this, please let me know!
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Conclusion: it's most likely angelite.
Can someone help me identify this rock? I got it at a market and it didn't have a label.
I tried google but I'm just not knowledgeable enough.
Reblogging so more people see is appreciated!
Idk if it will help but it almost feels powdery? Really soft, like I always think there must be residue left on my hands but there isn't.
It's harder than my fingernail but softer than a nail I had lying around. It can be scratched with a knife!
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Trailcam: Rhynie Chert biota, fossil deposit known for it's very detailed fossils of plants and invertebrates due to them being petrified by volcanic hot springs, around 410 million years ago in the early Devonian.
[Image description: A series of digital illustrations of a geothermal landscape with blue and orange geothermal pools and clusters of green plants, with brown mountains in the background. In the front of the image, there are 2 plants close up.
Image 1: At dawn, a Crussolum centipede, a dark blue centipede with long thin legs, reaches up to climb the plant on the left, which has some small Protacarus crani mites, appearing as small pale dots, climbing on the top. Part of a Leverhulmia mariae myriapod, looking like dark green millipede or centipede, is visible at the base of the second plant.
Image 2: As a storm approaches in the day, an orange Palaeocharinus rhyniensis trigonotarbid, a small arachnid that looks like a spider with a flat, segmented abdomen and more small eyes, eats a small bluish white Lepidocaris rhyniensis crustacean, it caught from the edge of a drying up pool.
Image 3: At night, Eophalangium sheari, a harvestman, is silhouetted against the sky as it climbs over the plants.]
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