bentoniten.
/ˈbɛntənʌɪt/, U.S. /ˈbɛntnˌaɪt/ Mineralogy.
A clay found in the Fort Benton strata of the Cretaceous of Wyoming. Also, any of several clayey deposits containing montmorillonite which have various practical applications (see quots.).
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the world > the earth > structure of the earth > constituent materials > clay > [noun] > other clays
red clayc1475
urry1669
blae1724
cat-dirt1747
iron clay1750
till1762
mulatto clay1788
oak-tree clay1794
porcelain jasper1794
porcellanite1794
Karoo ground1836
plinthite1836
papa1851
Bradford clay1858
Indianaite1868
sinopite1868
hydrobiotite1881
pampas-clay1885
byon1892
potato clay1896
bentonite1898
quick clay1901
gumbotil1916
1898 W. C. Knight in Engin. & Mining Jrnl. 22 Oct. 491/1 In a recent article..the writer described briefly a new variety of clay found in Wyoming and suggested the name Taylorite... It has since been learned that the name Taylorite is preoccupied; consequently the clay will hereafter be known as Bentonite.
1939 Jrnl. Royal Aeronaut. Soc. 43 647 Highly diluted water dispersions of natural bentonite have proved very suitable for such work [sc. detection of turbulence of a liquid by means of polarization].
1943 Electronic Engin. 15 322 X-ray analysis has..made possible the gaining of valuable knowledge of the crystals forming the extremely plastic and interesting substance ‘bentonite’.
1956 New Biol. 21 20 Another method of attacking this difficult problem [sc. haze formation in beer] is by the adsorption of the undesirable material on to an inert material such as bentonite.
1959 New Scientist 2 July 21/2 The manufacture of British bentonites used in foundry moulding sands, paints, oil-well drilling muds and other things.
1964 R. F. Ficchi Electr. Interference viii. 159 The anodes were placed in a 8-in. diameter well..then back-filled with bentonite.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2021).
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n.1898