How to find antimatter? Beyond (No Man's Sky)

Now in order to repair the pieces that give +1 to the capacity of the costume you need to search for them. The rarest material - antimatter
Where she even look? When I had the quest for the search of antimatter, I can run the scanner of the ship and he immediately found the antimatter. After I tried to run the scanner in different places, but he could not find it. In the sale of anti-matter is also present, not to fly across the planet, hoping to find an abandoned building that rarely comes?