of all the elements I'm the most corrosion resistant
I'm notable for my role in the K-T extinction event
when all the dinosaurs were killed probably by a meteorite
cause volcanic ash and dust blocked out all of the sunlight

Iridium's as dense if not more so than Osmium
Iridium's also a member of the family Platinum
I'm a great supercollider for producing antimatter
when alloyed with platinum I can make that metal harder

I won't corrode in acid and I blow off Aqua Regia
and salts need to be molten for me to start to feel ya
with Platinum I'm the standard mass for a kilogram today
named after the Latin word for rainbows even though I'm not gay

Iridium's as dense if not more so than Osmium
Iridium's also a member of the family Platinum
I'm a great supercollider for producing antimatter
when alloyed with platinum I can make that metal harder

Iridium

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