glauconite
1.an olive-green sandstone containing glauconite.
3.Glauconite, hematite-limonite and some chlorite are formed in syndiagenesis.
4.Environmental Significance of Glauconite in Funing Group(Paleogene), Tungtai Depression, Kiangsu Province
5.Occurrence and Geological Significance of Glauconite in Cenozoic Group of Jiyang Depression
6.A sand or sediment having a dark greenish color caused by the presence of glauconite.

