Ummm phosphorous. Like that time I had an unlimited supply of 32” Toshiba real tubes. Bussy was remodeling Hollywood videos all over the country. All those TV’s hanging in the ceiling built ins he got to keep. Had a trailer full of them, like 30-40 at one point. This was when HD was rear projection dlp shit. I had one in every room.
The phosphors on television CRTs weren't phosphorous. They were just illuminated by excitement. For example, the red usually came from Europium mined from Mountain Pass in the Western USA.
I'd love to have a chunk of the raw ore since they are mining again.