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.
a hole drilled or bored into the earth to obtain water, petroleum, natural gas, brine, or sulfur. a spring or natural source of water. an apparent reservoir or a source of human feelings, emotions, energy, etc.: He was a well of gentleness and courtesy.