glauconiten.
/ˈɡlɔːkənʌɪt/ Mineralogy.
Hydrous silicate of iron, potassium, and other bases, commonly called green earth.
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the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > glauconite
green earth1794
glauconite1836
greensand1873
1836 T. Thomson Outl. Mineral. I. 387 Glauconite is employed as a colour by painters.
1851 G. F. Richardson Introd. Geol. (1855) 179 The glauconite, or fire-stone of the chalk formation.
1865 C. Lyell Elem. Geol. (ed. 6) xvii. 311 Marls and sands, often containing much green earth, called glauconite.
Derivatives
glaucoˈnitic adj. containing or resembling glauconite.
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the world > the earth > minerals > mineral sources > [adjective] > yielding a mineral or metal > glauconite
glauconiferous1852
glauconitic1864
the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [adjective] > mica > glauconite
glauconiferous1852
glauconitic1864
1864 Q. Jrnl. Geol. Soc. 21 20 The Glauconitic sands—These sands are of a dark-green colour, and consist of glauconitic and arenaceous grains in a slightly argillaceous paste.
1879 F. Rutley Study of Rocks xiv. 289 The lower portion, termed the grey chalk..is generally slightly glauconitic at the base.
This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2018).
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