How can I remove a black river stain from a wooden teak table? I have a gorgeous wooden teak table. While I was on...

I have a gorgeous wooden teak table. While I was on leave, my son who look after my house in my skiving put too much water on a potted plant on the said table. The result a round black areole have formed under the pot saucer.

The table is not varnished it is a moment ago plain waxed wood.
What can I do to find rid of the stain without too much troubles and short damaging my table.

Thks for beforehand your tips.
Answers:    You enunciate 'how can I remove the stain without too much troubles'.

You can't!

However, the power of oiled fairly than lacquered is that it is a lot easier.

I suggest hiring or borrowing a belt sander and removing a couple of mm of the table surface. You'll obligation to do this in an external, all right ventilated place. Eventually the stain will disappear.
You must sand evenly and maintain the sander moving across the surface without staying surrounded by any one place too long or else you terminate up with gaping grooves!
Once you've removed the stain use a finer grade of sandpaper wrapped around a sand block. Splash a small amount of clean dampen onto the wood, allow to dry and then sand as the hose 'lifts' the wood grain for sand.
Finally finish sanding next to a very fine position of paper( flour paper) or wire-wool. Clean off next to a lint free cloth and White Spirit , then re-oil near Teak Oil.

Water isn't a great friend of Oiled Teak( or Iroko, a teak substitute) especially when contaminated with soil, so I'd preserve your potted plants off the table contained by future.
oxiclean lol