Corundum is an incredibly useful material for calibrating powder x-ray diffractometers, and you can get NIST SRM 1976c for this purpose.

it is also heavily used in making high temperature sample holders and about a billion other applications in science and chemistry.

vote corundum

#mincup #mincup2023 #mineralcup #mineralcup2023

I am just here to get drunk and start fights about the #MineralCup

It's basically the only sport where I choose to dive deep into arbitrary fandom.

Vote for your favorite Mineral in the #MineralCup!
This was a ton of fun when it was on Twitter. It's now been moved to a website so more people can enjoy. Vote! Vote! Starts on Friday!

https://www.mineralcup.org/about

So, I may have taken 550+ photos (until my phone almost died) and had my husband take 250+ photos. I'm not going to attempt to go through them until home with my computer. 🤣

I'm going to be ready for @MineralCup 2023!

I love the way the exhibit was organized. I could happily spend many more hours exploring the exhibit.

https://carnegiemnh.org/
#Zircon ##MineralCup #MinCup2023 #CarnegieMuseumOfNaturalHistory

@rock_jockey
Gorgeous specimen! 😍

#Wulfenite was a contestant (not the word I want, but it works) in this year's @MineralCup!
Sadly, it didn't make it past round 1 as it was defeated by #Sodalite.

#MinCup2022 #MineralCup

https://mastodon.online/@rock_jockey/109344405218813814
#Wulfenite was a contestant (not the word I want, but it works) in this year's @MineralCup!
Sadly, it didn't make it past round 1 as it was defeated by #Sodalite!

#MinCup2022 #MineralCup

Help?

Twitter’s archive tool doesn’t appear to include polls at all. Not even the bodytext with a link or something equally half-useful. This is heartbreaking for archiving #YouFindARock & #MineralCup.

Anyone found a solution yet? (Beyond screenshooting everything, which I’m seriously contemplating while I gaze numbly into the middle distance.)

#TwitterMigration