Answer: True,a mineral is a naturally occurring solid with a regular, repeating structure.
Step-by-step explanation:
Minerals are natural occurring inorganic solid substance with fixed chemical composition. These solids are formed by repeating unit of their single crystal structure that is atom present in the minerals are arranged or placed in systematic pattern or fashion. For example : Halite is a mineral composed of chlorine and sodium atoms arranged in a cubic pattern.
So, the given statement is true.