Taxonomy term

usgs

Energy Notes: November 2010-2011

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
19 Mar 2012

Mineral Resource of the Month: Cadmium

The element cadmium was discovered in 1817 by Friedrich Stromeyer, a professor of chemistry at the University of Göttingen in Germany. Stromeyer noticed that a yellowish glow would occur when heat was applied to certain samples of calamine, a zinc-carbonate. This was unusual as the reaction was expected to be colorless. After further testing, Stromeyer deduced that an unknown metallic impurity in the carbonate caused the color change. He called the new metal “cadmium” after “kadmeia,” the Greek word for calamine.

 
13 Mar 2012

Energy Notes: October 2010-2011

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
19 Feb 2012

Mineral Resource of the Month: Boron

Elemental boron is a metalloid that has limited commercial applications. But boron compounds, chiefly borates, are commercially important; therefore, boron products are priced and sold based on their boric oxide content, varying by ore and compound and by the absence or presence of calcium and sodium. Four borate minerals — colemanite, kernite, tincal and ulexite — make up 90 percent of the borates used by industry worldwide.

 
13 Feb 2012

Energy Notes: September 2010-2011

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
19 Jan 2012

Mineral Resource of the Month: Rhenium

Rhenium, a silvery-white, heat-resistant metal, has increased significantly in importance since its discovery in 1925. First isolated by a team of German chemists studying platinum ore, the mineral was named for the Rhine River. From 1925 until the 1960s, only two metric tons of rhenium were produced worldwide. Since then, its uses have steadily increased, including everything from unleaded gasoline to jet engines, and worldwide annual production now tops 45 metric tons.

 
13 Jan 2012

Energy Notes: August 2010-2011

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
20 Dec 2011

Mineral Resource of the Month: Garnet

Garnet, the birthstone for the month of January, has been used as a gemstone for centuries. Garnet necklaces dating from the Bronze Age have been found in graves, and garnet is found among the ornaments adorning the oldest Egyptian mummies. However, garnet’s characteristics, such as its relatively high hardness and chemical inertness, make it ideal for many industrial applications.

 
13 Dec 2011

Energy Notes: July 2010-2011

Oil and petroleum imports data are preliminary numbers taken from the American Petroleum Institute’s Monthly Statistical Report. For more information visit www.api.org.

 
20 Nov 2011

Mineral Resource of the Month: Tin

Tin was one of the earliest-known metals. Because of its hardening effect on copper, tin was used in bronze implements as early as 3500 B.C. Bronze, a copper-tin alloy that can be sharpened and is hard enough to retain a cutting edge, was used during the Bronze Age in construction tools as well as weapons for hunting and war. The geographical separation between tin-producing and tin-consuming nations greatly influenced the patterns of early trade routes. Historians think that as early as 1500 B.C., Phoenicians traveled by sea to the Cornwall district of England to obtain tin. The pure metal was not used unalloyed until about 600 B.C.

 
13 Nov 2011

Pages