Definition from Merriam-Webster:
1. noun
- a naturally occurring crystalline element or compound (as diamond or quartz) that has a definite chemical composition and results from processes other than those of plants and animals
- any of various naturally occurring substances (as ore, coal, salt, sand, stone, petroleum, natural gas, or water) obtained for human use usually from the ground
- a natural substance that is neither plant nor animal
- an inorganic substance
2. adjective
- of, relating to, or having the characteristics of a mineral :