Here's why:
* Ore: An ore is a naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.
* Mineral: A mineral is a naturally occurring solid with a defined chemical composition and a specific crystal structure.
* Metal: A metal is a material that is typically hard, shiny, malleable, ductile, and a good conductor of heat and electricity.
So, ore minerals are simply those minerals that contain metals in a form that can be economically extracted.