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Results from our Program’s research and minerals information activities are published in USGS publications series as well as in outside journals.  To follow Minerals Information Periodicals, subscribe to the Mineral Periodicals RSS feed.

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Appendix C: Summary of Major Metallogenic Belts in Northeast Asia (the Russian Far East, Yakutia, Siberia, Transbaikalia, Northern China, Mongolia, South Korea, and Japan) Appendix C: Summary of Major Metallogenic Belts in Northeast Asia (the Russian Far East, Yakutia, Siberia, Transbaikalia, Northern China, Mongolia, South Korea, and Japan)

The major purposes of this chapter are to provide (1) an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia for readers who are unfamiliar with the region, (2) a general scientific introduction to the succeeding chapters of this volume, and (3) an overview of the methodology of metallogenic and tectonic analysis used in this study. We also describe how a...
Authors
Sergey Rodionov, Alexander A. Obolenskiy, Elimir Distanov, Gombosuren Badarch, Gunchin Dejidmaa, Duk-Hwan Hwang, Alexander Khanchuk, Masatsugu Ogasawara, Warren Nokleberg, Leonid Parfenov, Andrei Prokopiev, Zhan Seminskiy, Alexander P. Smelov, Hongquan Yan, Yuriy Davydov, Valeriy Fridovskiy, Gennandiy Gamyanin, Ochir Gerel, Alexei Kostin, Sergey A. Letunov, Xujun Li, Valeriy Nikitin, Vladimir Ratkin, Vladimir Shpikerman, Sadahisa Sudo, Vitaly Sotnikov, Alexander Spiridonov, Vitaly Stepanov, Fengyue Sun, Jiapeng Sun, Weizhi Sun, Valeriy Supletsov, Vladimir Timofeev, Oleg Tyan, Valeriy Vetluzhskikh, Koji Wakita, Yakov Yakovlev, Lydia M. Zorina

Appendix A: Description of the Northeast Asia Project and Associated Products Appendix A: Description of the Northeast Asia Project and Associated Products

The major purposes of this chapter are to provide (1) an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia for readers who are unfamiliar with the region, (2) a general scientific introduction to the succeeding chapters of this volume, and (3) an overview of the methodology of metallogenic and tectonic analysis used in this study. We also describe how a...
Authors
Warren Nokleberg, Leonid Parfenov, Alexander Khanchuk, Mikhail Kuzmin, Alexander A. Obolenskiy, Andrei Prokopiev, Sergey Rodionov, Alexander P. Smelov, Gombosuren Badarch, Hongquan Yan, Duk-Hwan Hwang, Masatsugu Ogasawara

Middle Jurassic through Quaternary metallogenesis and tectonics of northeast Asia, Chapter 8 in Metallogenesis and tectonics of northeast Asia Middle Jurassic through Quaternary metallogenesis and tectonics of northeast Asia, Chapter 8 in Metallogenesis and tectonics of northeast Asia

The major purposes of this chapter are to provide (1) an overview of the regional geology, tectonics, and metallogenesis of Northeast Asia for readers who are unfamiliar with the region, (2) a general scientific introduction to the succeeding chapters of this volume, and (3) an overview of the methodology of metallogenic and tectonic analysis used in this study. We also describe how a...
Authors
Sergey Rodionov, Alexander Khanchuk, Alexander A. Obolenskiy, Masatsugu Ogasawara, Zhan Seminskiy, Andrei Prokopiev, Vladimir Timofeev, Warren Nokleberg

To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history

The eastern central Front Range of the Rocky Mountains in Colorado has long been a region of geologic interest because of Laramide-age hydrothermal polymetallic vein-related ores. The region is characterized by a well-exposed array of geologic structures associated with ductile and brittle deformation, which record crustal strain over 1.7 billion years of continental growth and evolution...
Authors
Jonathan Caine, John Ridley, Zachary Wessel

Total mercury, methylmercury, and selected elements in soils of the Fishing Brook watershed, Hamilton County, New York, and the McTier Creek watershed, Aiken County, South Carolina, 2008 Total mercury, methylmercury, and selected elements in soils of the Fishing Brook watershed, Hamilton County, New York, and the McTier Creek watershed, Aiken County, South Carolina, 2008

Mercury is an element of on-going concern for human and aquatic health. Mercury sequestered in upland and wetland soils represents a source that may contribute to mercury contamination in sensitive ecosystems. An improved understanding of mercury cycling in stream ecosystems requires identification and quantification of mercury speciation and transport dynamics in upland and wetland...
Authors
Laurel Woodruff, William Cannon, Christopher Knightes, Francis Chapelle, Paul Bradley, Douglas Burns, Mark Brigham, Mark Lowery

Mineral resource of the month: silicon Mineral resource of the month: silicon

The article offers information about silicon, a metalloid element which is considered the second-most abundant element in the Earth crust.
Authors
Water Resources Division U.S. Geological Survey

Changes in the North American ferroalloys industry structure and trends in the industry during the past 20 years Changes in the North American ferroalloys industry structure and trends in the industry during the past 20 years

This analysis of changes in the North American (Canada, Mexico, and the United States) ferroalloys industry between 1987 and 2007 includes the locations and types of ferroalloy plants in North America and the changes in production, imports, exports, pricing, and the structure of ownership since 1987, which was just prior to the implementation of the North American Free Trade Agreement...
Authors
J.R. Didaleusky, J.D. Jorgenson, L.A. Corathers, M.D. Fenton, P.H. Kuck, J.F. Papp, D.E. Polyak, Kim B. Shedd

Ball clay Ball clay

The article reports on the global market performance of ball clay in 2009 and presents an outlook for its 2010 performance. Several companies mined ball call in the country including Old Hickey Clay Co., Kentucky-Tennessee Clay Co., and H.C. Spinks Clay Co. Information on the decline in ball clay imports and exports is also presented.
Authors
Robert Virta

Mineral resource of the month: salt Mineral resource of the month: salt

The article presents information on various types of salt. Rock salt is either found from underground halite deposits or near the surface. Other types of salt include solar salt, salt brine, and vacuum pan salt. The different uses of salt are also given including its use as a flavor enhancer, as a road deicing agent, and to manufacture sodium hydroxide.
Authors
Dennis Kostick

Kaolin Kaolin

Statistics on kaolin consumption, worldwide and domestic production, prices, and trade in 2009 are presented. Industry news and the outlook for the kaolin sector in 2010 are provided.
Authors
R.L. Virta

Bromine Bromine

The entire U.S. production of bromine in 2009 came from underground brines in Arkansas, where it was the leading mineral commodity produced in terms of value. Two companies, Albermarle Corp. and Chemtura Corp., were responsible for bromine recovery. Worldwide, the United States is still the leading producer. However, U.S. dominance has decreased, as countries like China, Israel, Japan...
Authors
Lori Apodaca
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