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A greenish mineral of the mica group, a hydrous silicate of potassium, iron, aluminum, or magnesium, (K,Na)(Al,Fe,Mg)2(Al,Si)4O10(OH)2, found in greensand and used as a fertilizer and water softener.

[German Glaukonit : Greek glaukon, neuter of glaukos, gray + -ite.]

glau′co·nit′ic (-nĭt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) a green mineral consisting of the hydrated silicate of iron, potassium, aluminium, and magnesium: found in greensand and other similar rocks. Formula: (K,Na,Ca)0.5-1(Fe,Al,Mg)2(Si,Al)4O10(OH)2.nH2O
[C19: from Greek glaukon, neuter of glaukos bluish-green + -ite1; see glaucous]
glauconitic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈglɔ kəˌnaɪt)

a greenish micaceous mineral, mainly a hydrous silicate of potassium, aluminum, and iron, occurring in greensand and clays.
[1830–40; < Greek glaukón, neuter of glaukós (see glaucous) + -ite1]
glau`co•nit′ic (-kəˈnɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.glauconite - a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
and Soucek, K.: 2016, Properties, durability and use of glauconitic Godula sandstones: a relatively less known building stone of the Czech Republic and Poland.
The reddish carbonates of the Kriukai Formation are northwards gradually replaced by light grey glauconitic and bioclastic middle- and inner-ramp carbonates (Estonian Shelf facies; Fig.
It is followed by a glauconitic sandstone lithofacies which is friable, fine to medium grained and occasionally carbonaceous (Fig.
In the area, this formation is composed of calcareous from fine to coarse-grained cross-bedded glauconitic sandstone (Notestein et al., 1944); in very low proportion beds and thin laminated carbonaceous-micaceous shales and thin beds of laminated limestones can be observed (ECOPETROL, 2012).
Phosphatic nodule beds [31], hardgrounds, and glauconitic and sandy beds and layers rich in fossils [32] are currently described in the Tegulines Clay [25].
is focussed on Lithic Glauconitic light oil in southeast Alberta and Cardium light oil in west central Alberta, Canada.
(2014): Glauconitic laminated crusts as a consequence of hydrothermal alteration of pillow-lavas: a microbial influence case.
The Upper Cambrian and Lower Ordovician Deadwood Formation in South Dakota (Figure 12) (Plate 1) has been described as a variegated, yellow to red, brown, gray, and green, glauconitic, conglomerate, sandstone, shale, dolomitic limestone, and dolomite; with a thickness of 4-400 ft.
The Nahr Umr is the first major non-carbonate Fm in the succession and consists of shales and minor glauconitic siltstones which pass laterally to limestones in the Oman mountain front to the east.
Controls on hydrocarbon accumulation in glauconitic sandstone, Suffield heavy oil sands, southern Alberta.
Notation SK SL Quarry location Kocbere Libnava Age Cretaceous (Cenomanian) Petrography Glauconitic sandstone; Glauconitic massive texture; sandstone; fine-grained banded texture; fine-grained Mineralogical Quartz (83%); Quartz (71%); composition K-feldspar (2%); K-feldspar (8%); muscovite, rutile, glauconite (3%); tourmaline, zircon (1%) zircon, titanite (1%) Notation SZ Quarry location Zamel Age Petrography Glauconitic sandstone; schistose texture; medium-grained Mineralogical Quartz (79%); composition glauconite (9%); feldspars (4%); muscovite (1%) TABLE 2: XRF chemical composition of tested materials.