Am playing for and just built a power matrix on precious metals. The power matrix adjacency is wealth, so I logically thought that wealth and gross income was the same. With precious metals the first green arrow means that what is built on that tile gets it. This is on an island, so outside precious metals it is connected to nonthing. It should be saying level two wealth. There is a second bonus from precious metals which means nonthing on a island. Something is adjacent. Plus one to research that I'm not getting anyway.