PDF-5+ is the world’s most comprehensive Powder Diffraction File™ (PDF®) database with 1,149,100+ entries! PDF-5+ includes 486,100+ inorganic and 667,100+ organic entries, so you have the data you need for all your phase identification needs. Purchase today at www.icdd.com/pdf-5 #chemsky

Simulate 1D Diffraction Patterns from CIF Files - Generate a simulated 1D diffraction pattern directly from a CIF file, streamlining the path from crystal structure to reference pattern. www.icdd.com/new-capabilities/ #Crystallography #XRD #MaterialsScience

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https://ow.ly/ZQ6N50ZKHcf The ICDD has accepted the crystalline data of all six nanomaterials as new entries in our PDF® database. https://ow.ly/lOUf50ZKHcc

Im deeply confused. They claim discovery of crystal structures but dont actually make crystals or show they exist? Like...wtf? You dont have a crystal if you dont have a crystal. We predict shit all day everyday, but I dont claim it is real and publish in Science without way more evidence.

Dalmeet Singh Chawla@dalmeet.bsky.social · 2w ago

Google DeepMind's latest version of the AI crystallography GNoME database still flooded with near duplicate entries and unrealistic compounds — my latest for @cenmag.bsky.social: cen.acs.org/research-int... #ChemSky

https://www.sciencedirect.com/science/article/abs/pii/S0272884226042793 Hydroxyapatite (HAp) derived from marine biowaste offers a sustainable alternative to conventional calcium phosphate biomaterials. #Hydroxyapatite #Biomaterials #chemsky

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I can’t think of a more appropriate ending for the 10th Anniversary of #MinCup than Quartz winning, the mineral that started it all! Thank you to @mikamckinnon.bsky.social and the team for all the tireless work you do! The ballot stuffers can stuff it, though!

Cherryfurby: Who's Awesome? You're Awesome!

Alt: Cherryfurby: Who's Awesome? You're Awesome!

static.klipy.com

https://link.springer.com/article/10.1007/s11694-026-04879-6 These findings demonstrate that the proposed XRD–chemometric approach is a rapid, non-destructive, and effective method for honey authentication. #XRDAnalysis #FoodSafety #chemsky

El Cuarzo ha ganado la MinCup2026. Tengo inmensa alegría y voy a cumplir mi promesa.

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

Congratulations, Quartz! After a decade of #MinCup, this key rock-forming mineral of optical tricks is the #MinCup26 Champion! Due to intense manipulation attempts in the final hours, the exact winning margin is still being audited. Please join us tomorrow for celebration!

This has been a weird year with some challenges we just couldn’t fix in time. We have ideas on what to do, but hearing from you makes all the difference. Please fill out our Players Survey and give us your thoughts on what’s important to you! www.mineralcup.org/2026/players...

Congratulations, Quartz! After a decade of #MinCup, this key rock-forming mineral of optical tricks is the #MinCup26 Champion! Due to intense manipulation attempts in the final hours, the exact winning margin is still being audited. Please join us tomorrow for celebration!

Things that make me laugh: Every time #Quartz has been in the #MinCup finals, it’s been against a mineral with the composition X₂O. This is particularly funny as ice and #Cuprite are the only two minerals with this composition, & ice took #MinCup19. Win some, lose some? Or history repeats?

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

I am once again asking for your vote for #Quartz!!! This is the final, people!!! It was your first mineral!!! Let’s bring it victory in #MinCup26!!!

Bernie Sanders: Alixx Attention Seeker Meme

Alt: Bernie Sanders: I am once again asking for your attention

static.klipy.com

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

Let's give quartz the crown it deserves. A classic, beloved since childhood, available in many beautiful colors (amethyst is quartz), the iconic shape you imagine if you think of crystal, and so much more. Vote quartz!

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

It doesn't take much editing to make xkcd 2501 about #MinCup. marshdeer.github.io/xkcd2501-gen...

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

Los tangueros de Bluesky tienen que votar al Cuarzo. Por aquel viejo tango: "... Cuarcito azul 🎶 de mi primera ilusión 🎵..." (Gracias Dani) #MinCup26 #Quartz #Tango #Cuarzo #Mevoysolo

LeSuPer@lesuper.bsky.uy · 4w ago

Llegó la tan ansiada final de #MinCup26 Cuprita vs a Cuarzo. Cu2O vs SiO2. Un mineral poco resistente a la oxidación pero con estructura intrincada vs el mineral omnipresente en la corteza terrestre de cristales quirales y muchos polimorfos. Votá Cuarzo campeón www.mineralcup.org/2026/vote-re...

Copper is my fav element, but for #MinCup26 final, I am team #Quartz! Pilati used its vibrational spectra to calculate how atoms move in its framework at room temperature. Quartz turns atomic motion into measurable behaviour. Read the @actacrystb.iucr.org study: journals.iucr.org/paper?cr0463=

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

I voted for #quartz of course! How could I not? #MinCup26

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

Llegó la tan ansiada final de #MinCup26 Cuprita vs a Cuarzo. Cu2O vs SiO2. Un mineral poco resistente a la oxidación pero con estructura intrincada vs el mineral omnipresente en la corteza terrestre de cristales quirales y muchos polimorfos. Votá Cuarzo campeón www.mineralcup.org/2026/vote-re...

Vote in Finals — Mineral Cup & Ore Cup

Vote in Cuprite vs Quartz Credit: Tony Peterson and Harold Moritz

mineralcup.org

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

For those interested in cryocrystallography I have written an article for the @IUCr newsletter on the history of the Cryostream. See www.iucr.org/news/newslet....

I’m team #Quartz all the way in #MinCup26! Under pressure, its SiO₂ framework does not simply shrink: Si–O–Si bridges flex and SiO₄ tetrahedra distort. d’Amour, Denner and Schulz reveal this structural resilience in their 1979 @actacrystb.iucr.org classic: journals.iucr.org/paper?a17323=

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

Ten years after Mineral Cup began, the mineral that began it all, quartz, is into the semi finals. Quartz is the most common SiO2 polymorph, but there are 8 other known polymorphs of SiO2 (cristobalite, tridymite, coesite, lechatelierite, moganite, seifertite, stishovite and xiexiandeite).

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

These photos are appalling. It should be a violation of game rules for competing contestants to fraternize like this 🤣😆🙈

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

Lets go #quartz! #MinCup26

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

#teamquartz

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

I love graphite SO much. BUT not as much as I love quartz. I really think this is quartz's year, and I think we need this. In a time of fear, pain, and uncertainty, let's celebrate the joy and wonder of being a kid falling in love with rocks and minerals for the first time. #teamquartz as always

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

How did it come down to the two WORST minerals? Quartz: Scratches my sample holders up, shows up like stink in mineral samples making it hard to see the other phases Graphite: SUPER slippery, slides out of the sample holder and contaminates other samples, pain to clean up #MineralCup #PXRD

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

I voted quartz, graphite is an interesting and useful mineral, but quartz is both a beautiful crystal form in varied colours, and a major component of rocks (igneous and sedimentary), also beaches, dunes and heaths. Piezoelectric properties are cool.

Mineral Cup & Ore Cup@mineralcup.bsky.social · 4w ago

#MinCup26 Semifinal 2 It’s a match sure to break hearts between industrial powerhouses piezoelectric #quartz and lubricating #graphite! (With the correct links this time!) VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...