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greensand

[green-sand] /ˈgrinˌsænd/
noun
1.
a sandstone containing much glauconite, which gives it a greenish hue.
Origin
1790-1800
1790-1800; green + sand
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for greensand
  • The results obtained from this study will be useful to greensand foundries looking to reduce volatile hydrocarbon emissions.
  • The principle of course to fine filtration also applies to the greensand filter.
  • greensand filters can also be configured as pressure filters for the removal or arsenic.
  • Pressure drop is comparable to that experienced with a greensand filter.
  • The adsorbed arsenic is then removed along with the iron in the anthracite-greensand filters.
  • greensand and anthracite vertical pressure filters for the removal of iron and manganese will be provided.
  • greensand is manufactured by coating glauconite with manganese dioxide.
British Dictionary definitions for greensand

greensand

/ˈɡriːnˌsænd/
noun
1.
an olive-green sandstone consisting mainly of quartz and glauconite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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