| 释义 |
bentonite Min.|ˈbɛntənaɪt|
[f. Benton (see below) + -ite1.]
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.).
1898W. C. Knight in Engineering & 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. 1939Jrnl. R. Aeronaut. Soc. XLIII. 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]. 1943Electronic Engin. XV. 322 X-ray analysis has..made possible the gaining of valuable knowledge of the crystals forming the extremely plastic and interesting substance ‘bentonite’. 1956New Biol. XXI. 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. 1959New Scientist 2 July 21/2 The manufacture of British bentonites used in foundry moulding sands, paints, oil-well drilling muds and other things. 1964R. F. Ficchi Electr. Interference viii. 159 The anodes were placed in a 8-in. diameter well..then back-filled with bentonite. |