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doc Definition of greensand
    English to English
    noun
  • an olive-green sandstone containing glauconite
  • source: WordNet 3.0
  • A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime.
  • source: Webster 1913
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