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Book Chapter

Mineral Deposits and the Sedimentary Environment

Published:
January 01, 1991

Abstract

Concentrations of dense resistate minerals in detrital deposits have been mined since the earliest days of human culture. Today they continue to supply considerable portions of the world's needs for some materials. Half or more of our gold, titanium minerals, gem diamond, zircon, and thorium comes from placers, and a considerable share of our tin, platinum, niobium and tantalum, uranium, and rare earth elements; some would add phosphate (Bone Valley- type deposits) and iron (Coleraine-type deposits). The deposits exploited now are mostly fossil rather than modern placer deposits, i.e., they were formed during previous geomorphic cycles and some were buried during later ones.

Of the deposits covered in this volume, those described in this chapter are the only ones not controlled by solution geochemistry. Thus these deposits constitute exceptions to some generalizations about deposit formation. The logic for placer deposits must be presented independently, and an attempt is made in this chapter.

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Contents

Reviews in Economic Geology

Sedimentary and Diagenetic Mineral Deposits: A Basin Analysis Approach to Exploration

Eric R. Force
Eric R. Force
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J. James Eidel
J. James Eidel
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J. Barry Maynard
J. Barry Maynard
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Society of Economic Geologists
Volume
5
ISBN electronic:
9781629490120
Publication date:
January 01, 1991

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