Abstract
Ore deposit geochemists and economic geologists have in the past directed most of their attention toward hydrothermal deposits, but it is becoming increasingly apparent that sedimentary deposits are of key future importance because of their size and other favorable characteristics. In addition, many deposits formerly considered hydrothermal are now recognized as sedimentary or as having important sedimentary affiliations. Geochemistry of Sedimentary Ore Deposits is the first to summarize and discuss the geochemistry of these important deposits, and it is therefore a welcome addition to the literature.The definition for “sedimentary ore deposits” adopted in this book is “formed by sedimentary processes.” Maynard therefore includes Mississippi Valley lead‐zinc ores (formed by hot sedimentary brines) and volcanogenic sulfides (deposited on the sea floor) as well as iron formation and sedimentary copper ores. The emphasis is on chemical sediments, so that placers are not included, nor are nonmetallics such as evaporites. The coverage thus encompasses metallic deposits formed by syngenetic and diagenetic processes, plus epigenetic ores formed by sedimentary brines or hydrothermal fluid at the sea floor.
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