It sucks to have to work with someone like that. People have no respect or understanding how hard it is for us to remain in control when these things happen, you are not alone.
It it was me, I would make some notes on how this co-worker negatively effects everyone's productivity-gossiping and wasting everyone's time, taking their mind off their duties. Give specific examples. Present this to your supervisor and explain how difficult it is to work with this person, and how it negatively it effects the bottom line of the company.
Good luck.