Science Fair Project Encyclopedia
Gritstone
(Redirected from Millstone grit)
Gritstone is a sedimentary rock composed of coarse sand grains and is a coarser version of sandstone.
Gritstone is usually laid down in water and frequently shows signs of cross bedding or current bedding .
It is quarried for building material. British gritstone was used for millstones to mill flour and sharpen blades, giving rise to its other common name of millstone grit.
See also
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details