Mineral Resource of the Month
The column "Mineral Resource of the Month", featuring the work of USGS mineral commodity specialists, now appears in the American Geological Institute's (AGI) magazine Earth (formerly Geotimes) with selected articles online at the Earth Magazine's Mineral Resource of the Month Archive. For more information about these and other mineral commodities, visit the USGS Commodity Statistics and Information site.
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Filter Total Items: 140
Mineral resource of the month: Garnet Mineral resource of the month: Garnet
Garnet is the general name given to a group of complex silicate minerals, all with isometric crystal structure and similar properties and chemical composition. The most common garnet minerals are classified into three groups: the aluminum-garnet group, the chromium-garnet group and the iron-garnet group. Worldwide, garnet resources are large and occur in a wide variety of rocks...
Authors
Kenneth C. Curry
Mineral resource of the month: Chromium Mineral resource of the month: Chromium
Although chromium is a metal, it does not occur naturally in metallic form. Chromium can be found in many minerals, but the only economically significant chromium-bearing mineral is chromite. Chromite has been mined from four different deposit types: stratiform chromite, podiform chromite, placer chromite, and laterite deposits. Most of the world's resources, however, are located in...
Authors
Ruth Schulte
Mineral Resource of the Month: Lime Mineral Resource of the Month: Lime
Lime is the common term for several chemicals in three major categories: quicklime, hydrated lime and refractory dead-burned dolomite. Lime is almost never found naturally. It is primarily manufactured by burning limestone in kilns, followed by hydration when necessary.
Authors
Lisa A. Corathers
Mineral resource of the month: Pumice and pumicite Mineral resource of the month: Pumice and pumicite
Pumice is an extrusive igneous volcanic rock formed through the rapid cooling of air-pocketed lava, which results in a low-density, high-porosity rock. Fine-grained pumice, or pumicite, is defined as minute grains, flakes, threads or shards of volcanic glass, with a size finer than 4 millimeters.
Authors
Robert Crangle
Mineral resource of the month: graphite Mineral resource of the month: graphite
No abstract available.
Authors
Donald W. Olson
Mineral resource of the month: silver Mineral resource of the month: silver
Silver, one of the eight precious or noble metals, has been used extensively throughout recorded history for various medical purposes, ornaments and utensils, and for its intrinsic value as the basis for trade and monetary systems. Silver has played a significant role in world history, financing a Greek victory over the Persians in 480 B.C., helping Spain become a world power in the 16th...
Authors
Florence C. Katrivanos
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Related
Below are publications associated with this project.
Filter Total Items: 140
Mineral resource of the month: Garnet Mineral resource of the month: Garnet
Garnet is the general name given to a group of complex silicate minerals, all with isometric crystal structure and similar properties and chemical composition. The most common garnet minerals are classified into three groups: the aluminum-garnet group, the chromium-garnet group and the iron-garnet group. Worldwide, garnet resources are large and occur in a wide variety of rocks...
Authors
Kenneth C. Curry
Mineral resource of the month: Chromium Mineral resource of the month: Chromium
Although chromium is a metal, it does not occur naturally in metallic form. Chromium can be found in many minerals, but the only economically significant chromium-bearing mineral is chromite. Chromite has been mined from four different deposit types: stratiform chromite, podiform chromite, placer chromite, and laterite deposits. Most of the world's resources, however, are located in...
Authors
Ruth Schulte
Mineral Resource of the Month: Lime Mineral Resource of the Month: Lime
Lime is the common term for several chemicals in three major categories: quicklime, hydrated lime and refractory dead-burned dolomite. Lime is almost never found naturally. It is primarily manufactured by burning limestone in kilns, followed by hydration when necessary.
Authors
Lisa A. Corathers
Mineral resource of the month: Pumice and pumicite Mineral resource of the month: Pumice and pumicite
Pumice is an extrusive igneous volcanic rock formed through the rapid cooling of air-pocketed lava, which results in a low-density, high-porosity rock. Fine-grained pumice, or pumicite, is defined as minute grains, flakes, threads or shards of volcanic glass, with a size finer than 4 millimeters.
Authors
Robert Crangle
Mineral resource of the month: graphite Mineral resource of the month: graphite
No abstract available.
Authors
Donald W. Olson
Mineral resource of the month: silver Mineral resource of the month: silver
Silver, one of the eight precious or noble metals, has been used extensively throughout recorded history for various medical purposes, ornaments and utensils, and for its intrinsic value as the basis for trade and monetary systems. Silver has played a significant role in world history, financing a Greek victory over the Persians in 480 B.C., helping Spain become a world power in the 16th...
Authors
Florence C. Katrivanos
Below are partners associated with this project.