A clay pit is a

quarry A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their envir ...

or mine for the extraction of

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...

, which is generally used for manufacturing

pottery Pottery is the process and the products of forming vessels and other objects with clay and other ceramic materials, which are fired at high temperatures to give them a hard and durable form. Major types include earthenware, stoneware and ...

, bricks or

Portland cement Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th ...

. Quarries where clay is mined to make bricks are sometimes called brick pits. A brickyard or

brickworks A brickworks, also known as a brick factory, is a factory for the manufacturing of bricks, from clay or shale. Usually a brickworks is located on a clay bedrock (the most common material from which bricks are made), often with a quarry for ...

is often located alongside a clay pit to reduce the transport costs of the raw material. Today,

producers are often not sited near the source of their clay and usually do not own the clay deposits. In these industries, the other essential raw material is fuel for firing and potteries may be located near to fuel sources. Former claypits are sometimes filled with water and used for recreational purposes such as

sailing Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the ''water'' (sailing ship, sailboat, raft, windsurfer, or kitesurfer), on ''ice'' (iceboat) or on ''land'' (land yacht) over a chosen cou ...

and

scuba diving Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface air supply. The name "scuba", an acronym for " Self-Contained Underwater Breathing Apparatus", was coined by Chr ...

. The

Eden Project The Eden Project ( kw, Edenva) is a visitor attraction in Cornwall, England, UK. The project is located in a reclaimed china clay pit, located from the town of St Blazey and from the larger town of St Austell.Ordnance Survey (2005). ''OS ...

at Bodelva near St Austell,

Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...

, UK is a major redevelopment of a former

china clay Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedra ...

(kaolin) pit for educational and environmental purposes.

References

Surface mining Bricks Mining in Cornwall Clay {{Mining-stub

See also

References