The term MINED SUBSTANCE is a crossword solution that consists of two words. The first word, MINERAL, is a seven-letter word that refers to a naturally occurring inorganic solid SUBSTANCE with a definite chemical composition and a crystalline structure. Minerals are typically formed by geological processes and can be found in rocks, soil, and water. Examples of minerals include quartz, feldspar, mica, and calcite. The second word, SUBSTANCE, is a nine-letter word that refers to a material or matter that has mass and occupies space. It can refer to any physical material, including liquids, gases, and solids.