Lutite

•  Bauxite

  Bauxite is the most important aluminium ore. This form of rock consists mostly of the minerals gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH), in a mixture with the two iron oxides goethite and hematite, the clay mineral kaolinite, and small amounts of anatase TiO2. Bauxite was named after the village Les Baux in southern France, where it was first recognized as containing aluminum and named by the Frence geologist Pierre Berthier in 1821.

  

  33.3%
  

  33.3%
  

  33.3%
  
•  Coal

  Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly sulfur, hydrogen, oxygen and nitrogen.

  

  60.0%
  

  20.0%
  

  20.0%
  
•  Gypsum

  Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.

  

  42.9%
  

  28.6%
  

  28.6%
  
•  Sandstone

  Sandstone (sometimes known as arenite) is a sedimentary rock composed mainly of sand-sized minerals or rock grains. Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any color, but the most common colors are tan, brown, yellow, red, gray and white.

  

  42.9%
  

  28.6%
  

  28.6%
  
•  Flint

  Flint (or flintstone) is a hard, sedimentary cryptocrystalline form of the mineral quartz, categorized as a variety of chert. It occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. Inside the nodule, flint is usually dark grey, black, green, white, or brown in color, and often has a glassy or waxy appearance. A thin layer on the outside of the nodules is usually different in color, typically white, and rough in texture.

  

  0.0%
  

  66.7%
  

  33.3%
  
•  Shale

  Shale is a fine-grained, clastic sedimentary rock composed of mud, which is a mix of flakes of clay minerals and tiny fragments of other minerals, especially quartz and calcite. The ratio of clay to other minerals is variable. Shale is characterized by breaks along thin laminae or parallel layering or bedding less than one centimeter in thickness, called fissility. Mudstones, on the other hand, are similar in composition but do not show the fissility.

  

  0.0%
  

  0.0%
  

  100.0%
  
•  Sedimentary rock

  Sedimentary rock is a type of rock that is formed by sedimentation of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles to settle and accumulate or minerals to precipitate from a solution. Particles that form a sedimentary rock by accumulating are called sediment.

  

  100.0%
  

  0.0%
  

  0.0%
  
•  Till

  Till or glacial till is unsorted glacial sediment. Glacial drift is a general term for the coarsely graded and extremely heterogeneous sediments of glacial origin. Glacial till is that part of glacial drift which was deposited directly by the glacier. It may vary from clays to mixtures of clay, sand, gravel and boulders. Clay in till may form in spherical shapes called till balls.

  

  71.4%
  

  14.3%
  

  14.3%
  
•  Chalk

  Chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. It forms under relatively deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores. It is common to find chert nodules embedded in chalk. Chalk can also refer to other compounds including magnesium silicate and calcium sulfate.

  

  42.9%
  

  42.9%
  

  14.3%
  
•  Oil shale

  Oil shale, an organic-rich fine-grained sedimentary rock, contains significant amounts of kerogen (a solid mixture of organic chemical compounds) from which technology can be used to extract liquid hydrocarbons. The name oil shale is a misnomer as geologists would not necessarily classify the rock as a shale, and its kerogen differs from crude oil.

  

  0.0%
  

  0.0%
  

  0.0%
  

• Sedimentary rocks by likeorhate

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•  UEFA Cup 2003–04

  

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•  Jyoti Guptara

  Jyoti Guptara (born November 22, 1988) is a young novelist of British and Indian heritage, best known as co-author of the Insanity Saga (writing together with twin brother Suresh Guptara).

  

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• Olympic bronze medalists for Portugal by likeorhate
•  Marcus Fenix

  

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•  Japanese destroyer Hatsuyuki

  

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