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Book Chapter

Associated Minerals

By
G. Brown
G. Brown
Soils and Plant Nutrition Department, Rothamsted Experimental Station,
Harpenden, Hertfordshire AL5 2JQ, England.
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Published:
January 01, 1980

Abstract

CLAY minerals are of widespread occurrence and only rarely are nataral materials pure. Usually other minerals are found in intimate association with the clay minerals and this chapter aims to provide a convenient collection of powder data that will allour thc identification of minerals commonly associated with clays. As these associated minerals frequently comprise only a small fraction of the sample, often only their more intense reflections can be observed but usually their response to the diagnostic treatments used for identifying clay minerals and a knowledge of the origin and history of the material makes possible reasonably certaln identifications. By contrast with other chapters of this book it is not the intention here to discuss crystal structures in any detail; the aim is to provide information for identifying the more common constituents associated with phyllosilicate clay minerals.

The Powder Diffraction File (PDF) published by the Joint Committee on Powder Diffraction Standards, 1601 Park Lane, Swarthmore. Pennsylvania 19081, U.S.A., provides an extensive and increasingly authoritative source of powder diffraction data and i: has been drawn upon heavily in the preparation of this chapter. For the oxides and hydroxides of iron and aluminium, Rooksby (1961) has been a valuable source. For information on manganese oxides the author is indebted to R. M. Taylor and R. M. McKenzie, Division of Soils, C.S.I.R.O., Glen Osmond, South Australia.

Probably the commonest accessory minerals in clays are the various hydroxides, oxyhydroxides and oxides of iron and aluminium. They are of major importance in relation to the technology of obtaining alumina from bauxites.

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Contents

Mineralogical Society Monograph

Crystal Structures of Clay Minerals and their X-Ray Identification

G. W. Brindley
G. W. Brindley
Department of Geosciences, and Materials Research Laboratory,
The Pennsylvania State University, University Park,
Pennsylvania 16802, U.S.A.
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G. Brown
G. Brown
Soils and Plant Nutrition Department,
Rothamsted Experimental Station, Harpenden,
Hertfordshire AL5 254, England
Search for other works by this author on:
Mineralogical Society of Great Britain and Ireland
Volume
5
ISBN electronic:
9780903056373
Publication date:
January 01, 1980

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