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In case you are wondering:

> Named davemaoite after prominent geophysicist Ho-kwang (Dave) Mao, the mineral is the first example of a high-pressure calcium silicate perovskite (CaSiO3) found on Earth.



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The large crystal size is a pretty sure bet it's pure. That recrystallization he showed was a thing of beauty.

It's a less likely explanation when it turns out that the crystal in question actually exists and works, like here.

I think this is an underrated response given that any crystal can start as a geode.

Cool to see that this is written in Crystal.

>You're right that the terminology has been tricky to contend with, although it's hard to say what a 'least-confusing' name would be.

"Chrystal with periodically re-arranged structure"?


Hey, no shame! A friend gave me a natural halite (salt) crystal that has beautiful purple coloration from natural radiation. Not radioactive, but purple mainly due to displaced electrons that formed color centers. It had great sharply defined edges and faces. For awhile.

When visitors remarked on the specimen, my wife often explained that it was a natural salt crystal. Nobody could resist licking it just to be sure.

Still got a beautiful color, but it's got about the same feature definition as a gummy bear...


We've never been so close to dilithium crystals. `2(5)6 dilithium 2(:)l diallosilicate 1:9:1 heptoferranide` for the uninitiated.

>"6. Monster pyramids

The first pyramid salt crystal that grew from this solution was an absolute beast. The humongous head was covered with all sorts of intricate formations that reminded me of bismuth crystals."

That's a very interesting observation!

I'm wondering in all of Chemistry -- are there other possible crystal formations that look like Bismuth or specific Bismuth-looking pyramid salt crystals?

Also, could we take molten Bismuth -- and somehow grow a pyramid shaped crystal out of it? If so how? If not, why not?

Anyway, great article!


I can't see the video. Incredible that the actual appearance of the crystal happens in phase transition - almost instantly.

and it does sound like a mineral which is quite in line with how I see sqlite.. pretty, timeless and rock solid

idk, crystallography is pretty neat. Maybe there's something to it after all, even silicon chips are always built from single crystals. That has got to count as a key discovery.

There is also Dilithium:

https://pq-crystals.org/


What a fantastic article! I didn't know it was possible to grow crystals like that from salt. Have to try this!

> Evidence of Earth's First Rains Found Trapped Within Primordial Crystals

Where can i buy a "Primordial Crystal" ? /s


It may also be that this sort of crystal is impossible to construct with uniformity and in large quantities. But there's still new chemistry here.

At school we had a sodium crystal that was around 15cm in diameter.

A teacher said, they found it in the woods.


A quartz crystal?


This is false. He wrote something about aperiodic Crystal.
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