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Close up of Lead
March 23, 2017

Lead

Lead is a corrosion-resistant dense metal that is easily molded and shaped. 85% of lead in the US is used for lead-acid batteries, which are used in automobiles, as industrial-type batteries for standby power for computer and telecommunications networks, and for motive power.

Close up of Bauxite
March 23, 2017

Bauxite

Mineral: Bauxite
Mineral Origin: Les Baux, France (Sample donated by Gary Kingston)
Primary Commodity: Aluminum and Gallium
Primary Commodity Uses: Aluminum is one of the most used metals on the planet, finding roles in transportation, construction, packaging, electronics, and other consumer

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Close up of Graphite
March 23, 2017

Graphite in Pegmatite Rock

Mineral: Graphite (C) in pegmatite rock
Mineral Origin: Ticonderoga, NY
Primary Mineral Commodity: Graphite
Mineral Commodity Uses: brake linings, foundry operations, heat-resistant lubricants, refractory applications, and steelmaking

Close up of Bastnaesite
March 23, 2017

Bastnaesite (the reddish parts) in Carbonatite

Mineral: Bastnaesite (the reddish parts) in Carbonatite
Mineral Origin: Mountain Pass, CA
Primary Commodity: Rare earth elements
Primary Commodity Uses: Rare earth elements are used to make strong magnets for smartphone speakers, microphones, vibration motors, smartphone screens, as well as

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Close up of Specularite
March 23, 2017

Specularite

Mineral: Specularite (a variety of Hematite)
Mineral Origin: Republic Mine, MI
Primary Mineral Commodity: Iron
Commodity Uses: Steelmaking

Close up of Conglomerate (Gold Ore)
March 23, 2017

Conglomerate (Gold Ore)

Rock: Conglomerate (Gold Ore) Contains sediments of Precambrian age; contains about 8 grams of gold per ton of rock.
Mineral Origin: Witwatersrand formation, South Africa. The gold in the Witwatersrand Basin area was deposited in Archean river deltas having been washed down from surrounding gold-rich greenstone belts to the north and

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February 23, 2017

PubTalk 2/2017 — Geology up-close

  • How does a scanning electron microscope (SEM) work?
  • What does USGS study with the SEM?
    • Earthquakes
    • Volcanoes
    • Mineral and energy resources
    • Soil and aquifer processes

By Leslie Hayden, USGS Geologist, Diane Moore, USGS Geologist, Kathryn Watts, USGS Research Geologist, Marjorie Schulz, USGS Research

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Scintillometer sitting on top of a rock outcropping surrounded by trees
February 17, 2017

Torrs of the Ruby Batholith

Scintillometer and torrs of the Melozitna granite in the Ruby batholith.  This granite contains abundant monazite and high levels of thorium and rare earth elements. This area is part of the Bureau of Land Management's Central Yukon Planning Area, which USGS did a mineral assessment of in 2015.

January 27, 2017

NMIC - 2017 Mineral Commodity Summaries Release

The National Minerals Information Center, the primary agency for collecting and analyzing nonfuel minerals information, releases the 2017 Mineral Commodity Summaries, a collection of reports on over 85 commodities essential to the U.S. economy and national security.

Image shows a sample of gold against a black background
December 31, 2016

Native Gold

A sample of native gold. Gold has been treasured since ancient times for its beauty and permanence.   Most of the gold that is fabricated today goes into the manufacture of jewelry, but it also performs critical functions in computers, communications equipment, spacecraft, jet aircraft engines, and a host of other products. Read more about gold

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Image shows a sample of rutile against a black background
December 31, 2016

Rutile

This is a sample of rutile, one of the primary mineral sources of titanium. While as a metal, titanium is well known for corrosion resistance and for its high strength-to-weight ratio, approximately 95% of titanium is consumed in the form of titanium dioxide (TiO2), a white pigment used in paints, paper, and plastics. Read more about titanium

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Image shows a sample of augelite and quartz on a black background.
December 31, 2016

Augelite and Quartz

A sample of augelite and quartz. Augelite is an aluminum phosphate mineral, primarily prized for collecting rather than as a source for its industrial mineral components.

Sample provided by Carlin Green, USGS. Sample originated from Mundo Nuevo Mine, Peru, and is 3.7cm in size.