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The Geological Society of America (GSA) @geosociety.bsky.social · 20/08/2026

The August issue of #Geology is now online! Topics include heavy rains and Mount Fuji; fate and rate of alluvial river captures; and Ediacaran large acanthomorphic acritarchs. Cover: Isoclinal folds of deep-sea fan deposits in Namibia. Photo by Adrian R. Tasistro-Hart. geosociety.co/Geology_Aug26

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The Geological Society of America (GSA) @geosociety.bsky.social · 04/09/2026

There may be an entire continent hiding beneath the Pacific Ocean. 🌏 In the landmark #GSAToday article “Zealandia: Earth’s Hidden Continent,” researchers propose that Zealandia should be considered a continent: geosociety.co/Mortimer_et_al #Zealandia #ContinentalCrust #PlateTectonics #Geoscience

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Callan Bentley @callanbentley.bsky.social · 02/09/2026

I cleaned up the smaller specimen of rock that I collected in this hike over the summer in the Gallatin Range of Montana. Now it joins my teaching collection. ⚒️

Polished side of a amphibolite bearing garnets and plagioclase feldspar

Pressure washed exterior of a black and white and cranberry colored rock

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Callan Bentley @callanbentley.bsky.social · 02/09/2026

It looks like both @cintylee.bsky.social & @katharinehayhoe.com are getting big recognition this year at the GSA annual meeting! Congratulations!!! 🎉 p. 21 of the new issue of GSA Today: @geosociety.bsky.social cdn.sanity.io/files/02ocqo... ⚒️

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Erika Anderson @andersonmineral.bsky.social · 07/09/2026

I present to you on this Mineral Monday a very fine crystal of monazite, one of today’s Mineral Cup challengers. This one is from Joaquim Felício, Brazil. #MineralMonday #GeoscienceBluesky #MinCup26 ⚒️🧪

Brown crystal of monazite in a tray lined by white foam. At the Canadian Museum of Nature.

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ルマニャ @bin210.bsky.social · 08/09/2026

Come on #Monazite buddy! Won't be fair losing against a low-T stuff. Please, don't let us down. You got this, mate!! #MinCup26

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Nadine, Hunter of Rocks @nadwgab.bsky.social · 17/07/2025

198 of #365Minerals 🧪⚒️ Labradorite: - Feldspar group mineral - Forms in igneous & metamorphic rocks - The shiny effect (labradorescence) is caused by microscopic lamellae which act as diffraction grating & cause colourful flashes - Named after its type locality, Labrador Peninsula, Canada #minerals

An irregular shaped chunk of labradorite whith a bright blue shine and dull grey veins running through it. From Labrador, Canada.

Specimen on display in the Natural History Museum, London.

A cut and polished, elongate octagonal piece of labradorite. It's black around the edges and its centre is shiny and blue-green to blue in colour. From Russia.

Specimen on display in the Natural History Museum, London.

A cube shaped piece of labradorite which is mostly grey but has a bright blue flash of colour on its top face. From Majunga, Madagascar.

Specimen on display in the Natural History Museum, London.

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Nadine, Hunter of Rocks @nadwgab.bsky.social · 01/02/2025

32 of #365Minerals 🧪⚒️ Lepidolite: - A mica group mineral - Rich in lithium - Normally found in granite pegmatites - Its name comes from the Greek words "lepidos" (scale) and "lithos" (stone) #minerals

Curved plates of shiny, brown-purple lepidolite in a large, rocky pegmatite. From Auburn, Maine, USA.

Specimen on display in the Natural History Museum, London.

A large chunk of dark purple lepidolite with white veins of translucent quartz and milky feldspar. From Minas Gerais, Brazil.

Specimen on display in the Natural History Museum, London.

A granular mass of scale-like, pale purple lepidolite. From Rožná, Vysočina Kraj, Czech Republic.

Specimen on display in the Natural History Museum, London.

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ルマニャ @bin210.bsky.social · 07/09/2026

Not a low-T-stuff fan. Obvious that I have to go for a time-capsule friend #Monazite, even though odds not in our favor. #MinCup26

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Cin-Ty Lee @cintylee.bsky.social · 21/04/2026

There are a lot of gatekeepers out there and you are destroying the future of the field with your lack of creativity. Do something useful. Step aside and allow the field to advance.

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Fredrik Høgaas @fredrhog.bsky.social · 02/09/2026

Biggánjárga tilite! About 635 million year-old till unit on top of a striated quartzite 🤯 It was a good day in the field. #snowballearth

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Bob Gooday @bobgooday.bsky.social · 05/12/2024

Probably the best individual thin section ever produced. John Faithfull's slice of the olivine cumulate from Unit 5 of the Rùm layered intrusion. #ThinSectionThursday

Thin section microscope image showing a background of black, white, and very pale yellow plagioclase covered in a series of long worm-shaped olivine crystals, all showing bright second order birefringence colours like yellow, purple, and blue. They are all aligned down towards the right.

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Dr Adam Jeffery @agpaitic-adam.bsky.social · 10/04/2025

A nice schist with muscovite, kyanite/sillimanite, chlorite, and twinned plagioclase. #thinsectionthursday #geology #science #minerals #rocks

An image of a rock in thin section, displaying crystals of various minerals (kyanite, sillimanite, muscovite, chlorite, plagioclase). A schistose texture is observed, with the muscovite being aligned and appearing to 'flow' from top right to bottom left of the image.

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Samuele Papeschi サムエレパペスキ | Geology is the way ⚒️🧪 @calamitaman.bsky.social · 13/08/2026

This is probably the most beautiful listvenite I have ever seen in my entire life. From the metasomatized Thetford ophiolite, next to the contact with granodiorite ⚒️ #geology #serpentinite #ultramaficrocks

outcrop of listvenite, a type of rock consisting of magnesite, talc, and quartz

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Shoji Nishimoto / 西本昌司 @nishimoto.rocks · 30/08/2026

Big crystals of Cpx and Opx in peridotite, Hokkaido, Japan. #様似町 #peridotite

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Shoji Nishimoto / 西本昌司 @nishimoto.rocks · 09/08/2026

A typical euhedral crystal of hornblende in the wall cladding of the Daisen Museum of Nature and History.

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The Geochemical Society @geochemsoc.bsky.social · 28/08/2026

Apply for a Capacity-Building Grant! Grants are available for projects in countries with low and lower-middle-income economies. Initiatives promote networking, educational activities, analytical training, or capacity building related to geochemistry. Due Sept 30. More Info: tinyurl.com/3zj2p7az

tinyurl.com

Capacity-building Grants

The GS is offering grants promoting networking, educational activities, analytical training or capacity building related to geochemistry in low and low-middle income countries.

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Goldschmidt Conference @goldschmidt-confer.bsky.social · 17/07/2026

As #Goldschmidt2026 comes to a close, we thank you for being part of this year’s conference in Montréal! We warmly invite you to join us for the upcoming Goldschmidt conferences: 2027: July 11–16, Paris, Fr 2028: July 09–14, Tokyo, JP

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ルマニャ @bin210.bsky.social · 02/09/2026

Ne faites jamais le bien si vous n'êtes pas prêt de supporter l'ingratitude. Soyez toujours bons envers tous. Quant à la reconnaissance, c'est de Dieu qu'il faut l'attendre !

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