Recent content by Grumalg

<shrug> My bottle of Iodine crystals is approaching 50 years old and has regularly been exposed to 100F+ in summer for months where it's stored. It's all still as crystals at the bottom of the bottle with no visible layer coating the inside of the brown glass bottle. The crystals all still...

In my experience it's not *that* volatile. The temperature where it melts is 113C and sublimation occurs about 113.7C at the triple point, and I doubt that rubble pile is that hot. I've handled Iodine crystals a fair bit, and they don't evaporate away at normal temperatures. I've...

Maybe the brick color is due to Iodine? Iodine-129 @ .84% fission yield and 15.7 million year halflife could surely still be around in quantity.