I’m pretty sure I’ve broken my brain. It’s:

1) the entire visible spectrum and probably even some of the invisible wave spectrum, or

2) blue + invisible waves, or

3) ports energy into a different dimensional aspect to maintain some sort of equilibrium?!, or

4) causes a space blip/mini wormhole (strictly momentary until it collapses),

5) ?????

[EDIT] I THINK I’M LOSING MY OWN ARGUMENT ABOUT TONY’S “DISCOVERY” NOT BEING VIBRANIUM

IF STEVE’S SHIELD IS ALL OF IT IN THE KNOWN WORLD AND IT DISAPPEARED FOR 70 YEARS MAYBE HOWARD TRIED TO SYNTHESIZE THEM

because

IF THEY ARE INCREDIBLY STABLE THEN IT WOULD MAKE SENSE THAT VIBRANIUM WOULD BE A HIGHLY VIABLE REPLACEMENT FOR PALLADIUM FOR CATALYSIS

AAAAND REGARDLESS OF MATERIAL (if they are both 4th-dimensional capable as previously posited) THE REASON IT COULD BE GLOWING IS THAT IT IS GOING TO A LOWER ENERGY STATE AND THUS EMITTING LIGHT (and who knows what else)

AND IT’S BLUE

SO

YEP

this element still needs a better name if they are all fourth-dimensional and I am taking suggestions