Taxonomy term

usgs

Energy Notes: April 2014-2015

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.

30 Oct 2015

Mineral Resource of the Month: Iodine

Iodine is a bluish-black lustrous solid (violet-colored in its gaseous state) found primarily in seaweed, underground brines associated with petroleum deposits and caliche ore deposits. 

26 Sep 2015

Energy Notes: March 2014-2015

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.

26 Sep 2015

Mineral Resource of the Month: Gemstones

Gemstones have been treasured objects throughout history, often serving as symbols of power and status for rulers and the wealthy. Stones used in early jewelry-making include amber, amethyst, coral, diamond, emerald, garnet, jade, jasper, lapis lazuli, pearl, rock crystal, ruby, serpentine and turquoise. 
 
23 Jul 2015

Energy Notes: January 2014-2015

U.S. Oil & Petroleum Imports (million of barrels per day)

23 Jul 2015

Energy Notes: December 2013-2014

U.S. Oil & Petroleum Imports (million of barrels per day)

26 Jun 2015

Mineral Resource of the Month: Gold

Gold was highly valued by early civilizations for its scarcity, durability and characteristic color, reminiscent of the sun, which was worshiped by some as a deity. It was first recovered from streambed gravels (placers), where it occurred in native form, and thus did not require extraction from ores. It was both essentially indestructible and easily worked. Gold nuggets were prized possessions that could be fashioned into bars of different standard weights and into ornaments and items of adornment that also served as portable wealth. Gold leaf (gold beaten into thin sheets) has been used to decorate significant architectural structures since ancient times. In the 7th century B.C., the Etruscans used gold to make false teeth, and it is still used in dentistry today due to its nontoxicity, durability and beauty.

26 Jun 2015

Mineral Resource of the Month: Iron oxide pigments

Iron oxide pigments, natural or synthetic, are inorganic materials commonly used as coloring agents. They are valued for their resistance to color-change (especially from exposure to sunlight), chemical resistance, stability under ambient environmental conditions, nontoxicity and relatively low cost.

 
29 May 2015

Energy Notes: October 2013-2014

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.

 
18 May 2015

Mineral Resource of the Month: Graphite

Graphite is one of four natural forms of crystalline carbon, along with carbon nanotubes, diamonds and fullerenes. It is gray to black in color, opaque and usually has a metallic luster, although it sometimes exhibits a dull earthy luster. Graphite is soft, flexible, low-density, chemically inert and highly refractory. It is the most electrically and thermally conductive of the nonmetals. 

 
12 May 2015

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