My favorite podcast did an episode about that!

Highly recommend if you like leftism, and also want to listen to an engineer talk at length about what this blue glowing powder is, the series of bad decisions that led to some scrap collectors finding it, and the even longer series of even worse decisions people made regarding what to do with this blue glowing powder

You can skip the Goddamn News if you want, discussion of the spicy rocks starts at 20:28

Ah, I remember this story:

on September 24, Ivo, Devair's brother, successfully scraped some additional dust out of the source and took it to his house a short distance away. There he spread some of it on the concrete floor. His six-year-old daughter, Leide das Neves Ferreira, later ate an egg while sitting on the floor. She was also fascinated by the blue glow of the powder, applying it to her body and showing it off to her mother.

What a horrible way to die :(