Star composition and elements present in a planetary system

Hi,

I think I originally posted this question to the wrong group
forum...so I'll try again. Please....Im not a scientist (Im a
historian...but that is neither here nor there)...so please use
laymans terms if possible.

When are star has a larger percentage of heavier than helium
elements....does that necessarily translate into celestial bodies
caught in its gravity containing a higher than average chance of being
composed of what we might call strategic resource elements (aluminum,
magnesium, titanium, iron, etc)?

For example, Barnard's Star (from what Ive read) has somewhere between
10 and 32 percent of its mass as being elements heavier than hydrogen
whereas our own star has only a fraction of a percent of its mass as
"metallicity". If there were celestial bodies orbiting Barnard's
Star...does it necessarily translate into there being higher than
average amounts of resource elements? Would Barnard III (3rd planet,
for the sake of argument) be richer in iron and other elements than
Earth?

Thanks in advance....