Taxonomy term

usgs

Energy Notes: August 2012-2013

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 Dec 2013

Mineral Resource of the Month: Phosphate Rock

As a mineral resource, “phosphate rock” is defined as unprocessed ore and processed concentrates that contain some form of apatite, a group of calcium phosphate minerals that is the primary source for phosphorus in phosphate fertilizers, which are vital to agriculture.

02 Dec 2013

Mineral Resource of the Month: Thallium

Thallium, a grayish-white metal similar to tin in appearance, was discovered spectroscopically in 1861. Like lead, it is heavy yet soft, and can be cut easily with a knife. When exposed to air, thallium’s luster quickly tarnishes to a blue-gray color owing to the formation of a film of thallium oxide. Its concentration in Earth’s crust is estimated at 0.7 parts per million; mostly it is found in association with potassium minerals in clays, soils and granites, but in general it is not commercially recoverable from those sources. Manganese nodules, found on the ocean floor, also contain thallium.

 
19 Nov 2013

Energy Notes: July 2012-2013

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 Nov 2013

Mineral Resource of the Month: Thallium

Thallium, a grayish-white metal similar to tin in appearance, was discovered spectroscopically in 1861. Like lead, it is heavy yet soft, and can be cut easily with a knife. When exposed to air, thallium’s luster quickly tarnishes to a blue-gray color owing to the formation of a film of thallium oxide. Its concentration in Earth’s crust is estimated at 0.7 parts per million; mostly it is found in association with potassium minerals in clays, soils and granites, but in general it is not commercially recoverable from those sources. Manganese nodules, found on the ocean floor, also contain thallium.

04 Nov 2013

Energy Notes: June 2012-2013

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 Oct 2013

Tackling "Boundary Faults" across the Alaska-Yukon border: A report from the field

Our two dusty trucks roll across the airstrip, casting long, late-May shadows down the runway. We spot our colleagues from the Yukon Geological Survey and realize we’ve found the right place after an exhausting 12-hour drive from Anchorage punctuated by several U-turns to find the right unmarked access driveway off the Alaska Highway at the south end of Kluane Lake. The evening air is crisp, and the towering peaks to the south are capped with snow.

15 Oct 2013

Mineral Resource of the Month: Hafnium

Hafnium is a ductile metal with a brilliant silver luster. It does not exist as a free element in nature; it is always associated with zirconium. Its existence was predicted as early as 1869 by Dmitri Mendeleev, but it wasn’t discovered until 1923 when it was found in the mineral zircon by X-ray spectroscopic analysis. Hafnia is the Latin name for Copenhagen, the city where hafnium was discovered.

 
13 Oct 2013

Energy Notes: May 2012-2013

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 Sep 2013

Mineral Resource of the Month: Lithium

Lithium, the lightest of all metallic elements, has unique properties that have led to its use in a diverse array of applications. For many years, most lithium was used in the production of ceramics, glass and aluminum. More recently, the market for lithium has shifted toward batteries for consumer electronics and electric vehicles.

 
13 Sep 2013

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