Taxonomy term

mineral resource of the month

Mineral Resource of the Month: Indium

Geologically, the occurrence of indium minerals is rare. The element most often occurs as a sulfide inclusion or substitutes in other base-metal minerals, including cassiterite, chalcopyrite, sphalerite and stannite. Indium’s abundance in the crust is estimated to be 0.05 parts per million, which makes it more abundant than silver, but it is so widely disseminated that it does not occur in high enough concentrations to form mineable deposits. Therefore, indium is most often recovered from byproduct residues produced during the refining of lead and zinc. But only about one-quarter of the indium mined worldwide is refined into metal, as many indium-bearing concentrates are sent to refineries that do not have the capability of recovering the metal.

 
14 Jul 2011

Energy Notes: February 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 Jun 2011

Mineral Resource of the Month: Titanium

Titanium is hip — at least when it comes to airplanes and jewelry. Known for its high strength-to-weight ratio and its resistance to corrosion, titanium and its alloys can also be found in everything from knee replacements to eyeglass frames to baseball bats to fighter planes.

 
14 Jun 2011

Energy Notes: January 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 May 2011

Mineral Resource of the Month: Tantalum

Tantalum — a rare, blue-gray, very hard transition metal — was discovered in 1801 or 1802. However, extensive use of the metal did not begin until 1940, when it became an important material for capacitors used in electronics.

 
14 May 2011

Energy Notes: December 2009-2010

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 Apr 2011

Mineral Resource of the Month: Feldspar

Feldspar is the general name of members of a group of closely related anhydrous minerals distinguished by the presence of aluminum and silica in combination with varying proportions of one or more base elements, including potassium, sodium and calcium. The particular mineral is named after its major base element: potassium feldspar, sodium feldspar or calcium feldspar. Feldspars are major components of most igneous rocks and constitute a large part of at least the outer layers of Earth and the moon. By some estimates, feldspar constitutes 60 percent of Earth’s crust.

 
14 Apr 2011

Energy Notes: November 2009-2010

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 Mar 2011

Mineral Resource of the Month: Chromium

Chromium is an important metal used as an alloying element in cast iron, steel and superalloys, as well as in refractory and numerous chemical applications.

 
14 Mar 2011

Energy Notes: October 2009-2010

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 Feb 2011

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