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.
3. Finish the well. Once the well is drilled, casing is inserted to prevent the water from wearing away and being contaminated by the sides of the well. This casing is usually narrower in diameter than the well hole itself and sealed in place with a grouting material, commonly either clay or concrete.