If the star is mostly metal it has to have a planet or two that might be chock-full of noble metals like gold and platinum.
Probably iron and nickel...................
It’s a bit misleading. In astronomy, metallicity is the abundance of elements present in an object that are heavier than hydrogen and helium. This includes things like carbon, oxygen, neon, etc. which are not metals. It also includes things like magnesium and iron, which are.
Except they’re probably made of antimatter.🙄