Magnetite has been important in understanding the conditions under which rocks form. Magnetite reacts with oxygen to produce hematite, and the mineral pair forms a buffer that can control oxygen fugacity. Commonly, igneous rocks contain solid solutions of both titanomagnetite and hemoilmenite or titanohematite.
Definition of relief well. : a vertical drain used for the drainage of a deep pervious stratum to relieve waterlogging of the surface soil.
Define relief. relief synonyms, relief pronunciation, relief translation, English dictionary definition of relief. n. 1. a. The easing of a pain, distress, or anxiety: The drug provides quick relief from asthma. The news of their safe arrival came as a great relief.