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Chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores. It is common to find chert or flint nodules embedded in chalk. Chalk can also refer to other compounds including magnesium silicate and calcium sulfate.
|OS Settlement Classification||Other settlement (village, hamlet etc)|
Other names by which Chalk, Kent has been known in the past
Chalk, Kent in John Bartholomew's "Gazetteer of the British Isles" (1887)
Chalk, par., NW. Kent, on river Thames, 2½ miles SE. of Gravesend, 1971 ac. (14 water) and 271 tidal water and foreshore, pop. 341.
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