glauconite definitions WordNet (r) 3.0 (2005) n 1: a green ... silicate occurring in greensand • glauconitic adjective Webster's 1913 Dictionary Glauconite Glau"co*nite, n. [Cf. F. glauconite, glauconie, fr. L. glaucus. See Glaucous.] (Min.) The green mineral ...
... 3.0 (2005) n 1: an olive-green sandstone containing glauconite Merriam Webster's noun Date: 1699 a sedimentary deposit that consists largely of dark greenish grains of glauconite often mingled with clay or sand Oxford Reference Dictionary n ... A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color ...