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- These areas are mainly in Alaska, Arizona, Arkansas, California, Colorado, Florida, Idaho, Louisiana, Mississippi, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, and Wyoming.
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What is the geology of US gold deposits?
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Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodity gold. Gold has been treasured since ancient times for its beauty and permanence. Most of the gold that is fabricated today goes into the manufacture of jewelry.
Locations of important gold-producing districts of the United States are shown in some of the reports of the United States Geological Survey listed at the bottom of this page. Geological surveys of the principal gold-producing States where additional information may be obtained also are listed.
Map of Gold Deposits in the U.S.A. This map shows estimated gold deposits in the U.S.A. Gold-type deposits have different colors. The age of these deposits is represented by different polygon stroke colors. For details, hover over the map.
Most survey marks were set by the U.S. Coast & Geodetic Survey (now called the National Geodetic Survey ); information for those marks is available online. For further assistance, contact the National Geodetic Survey at 301-713-3242 or ngs.infocenter@noaa.gov. For information about marks set by the USGS, contact the National Geospatial ...
The U.S. Geological Survey's (USGS) Mineral Resources Program's interactive Geologic Map of U.S. States provides a large amount of information on geology, natural resources, and environmental data for every U.S. state, including: Surface and bedrock geology; Mineral resources; Geochemical and geophysical data; Water monitoring sites
Geologic processes concentrate gold into two principal types of deposits: lode (or primary) deposits where gold is deposited by gold-bearing solutions within rock formations; and, placer (or secondary) deposits where gold-bearing rocks are eroded and the free gold is concentrated in stream beds.
