Definition of glauconite in English:

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Pronunciation: /ˈɡlôkəˌnīt/


A greenish clay mineral of the illite group, found chiefly in marine sands.
Example sentences
  • At the base of the Reading Formation are several metres of brown clay-rich sand with glauconite, flint pebbles and oyster shells.
  • In addition, colors that can be produced by using mixtures of the just-mentioned basic pigments, in some cases along with glauconite and charred bone, are also noted and illustrated.
  • Rounded 1 mm grains of glauconite occur in the Pentecost Sandstone.



Pronunciation: /ˌɡlôkəˈnitik/
Example sentences
  • The upper part comprises clay-rich glauconitic sands without shell debris, and with patchy areas of orange-brown and reddish - brown staining toward the top.
  • The lowermost 6 m consist of dark grey-green glauconitic sands.
  • The bones were preserved in a poorly consolidated, glauconitic sandy matrix that was easily removed using a dental pick and soft brush after initial consolidation of the bones with acrylic resin.


Mid 19th century: from German Glaukonit, from Greek glaukon (neuter of glaukos 'bluish-green') + -ite1.

For editors and proofreaders

Syllabification: glau·co·nite

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