Mission Areas

Energy and Minerals

Mission Areas L2 Landing Page Tabs

Filter Total Items: 557
Year Published: 2016

Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

Scientific Investigations Report 2016–5089 and accompanying data releases are the products of the U.S. Geological Survey (USGS) Sagebrush Mineral-Resource Assessment (SaMiRA). The assessment was done at the request of the Bureau of Land Management (BLM) to evaluate the mineral-resource potential of some 10 million acres of Federal and adjacent...

Day, Warren C.; Frost, Thomas P.; Hammarstrom, Jane M.; Zientek, Michael L.
Day, W.C., Frost, T.P., Hammarstrom, J.M., and Zientek, M.L., eds., 2016, Mineral Resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming: U.S. Geological Survey Scientific Investigations Report 2016–5089, http://dx.doi.org/10.3133/sir20165089.

Year Published: 2016

Overview with methods and procedures of the U.S. Geological Survey mineral-resource assessment of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming: Chapter A in Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

This report, chapter A of Scientific Investigations Report 2016–5089, provides an overview of the U.S. Geological Survey (USGS) Sagebrush Mineral-Resource Assessment (SaMiRA). The report also describes the methods, procedures, and voluminous fundamental reference information used throughout the assessment. Data from several major publicly...

Day, Warren C.; Hammarstrom, Jane M.; Zientek, Michael L.; Frost, Thomas P.
Day, W.C., Hammarstrom, J.M., Zientek, M.L., and Frost, T.P., eds., 2016, Overview with methods and procedures of the U.S. Geological Survey mineral-resource assessment of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming (ver. 2.0, October 2016): U.S. Geological Survey Scientific Investigations Report 2016–5089–A, 211 p., http://dx.doi.org/10.3133/sir20165089A.

Year Published: 2016

Three-dimensional electrical resistivity model of the hydrothermal system in Long Valley Caldera, California, from magnetotellurics

Though shallow flow of hydrothermal fluids in Long Valley Caldera, California, has been well studied, neither the hydrothermal source reservoir nor heat source has been well characterized. Here a grid of magnetotelluric data were collected around the Long Valley volcanic system and modeled in 3-D. The preferred electrical resistivity model...

Peacock, Jared R.; Mangan, Margaret T.; McPhee, Darcy K.; Wannamaker, Phil E.
J.R. Peacock, M.T. Mangan, D. McPhee, and P.E. Wannamaker, 2016, Three-dimensional electrical resistivity model of the hydrothermal system in Long Valley Caldera, California, from magnetotellurics: Geophysical Research Letters,

Year Published: 2016

Geochemistry of the Black Sea during the last 15 kyr: A protracted evolution of its hydrography and ecology

The Black Sea is a 2200 m deep anoxic, marine sea connected to the Mediterranean Sea via the Dardanelles Strait, Marmara Sea, and the 3 km wide, 35 m deep Bosphorus Strait. The biogeochemistry of sediment from the Anatolia slope has recorded changes to the hydrography leading up to and following the input of Mediterranean water at ~9.4 ka (103 ...

Piper, David Z.
Piper, D.Z., 2016, Geochemistry of the Black Sea during the last 15 kyr; a protracted evolution of its hydrography and ecology: Paleoceanography.

Year Published: 2016

Late Neogene deformation of the Chocolate Mountains Anticlinorium: Implications for deposition of the Bouse Formation and early evolution of the Lower Colorado River

Deformation related to late Neogene dextral shear can explain a shift from an estuarine to lacustrine depositional environment in the southern Bouse Formation north of Yuma, Arizona. We infer that late Neogene deformation in the Chocolate Mountain Anticlinorium (CMA) created a barrier that blocked an estuary inlet, and that pre-existing and...

Beard, Sue; Haxel, Gordon B.; Dorsey, Rebecca J.; McDougall, Kristin A.; Jacobsen, Carl E.

Year Published: 2016

The Provo shoreline of Lake Bonneville: Chapter 7

G.K. Gilbert studied the Bonneville basin 150 years ago and his findings have largely stood the test of time: The Provo shoreline, the most prominent geomorphic feature of Lake Bonneville, reflects threshold-stabilized overflow of the lake after the Bonneville flood and before a drier climate caused the lake to shrink. Subsequent refinements in...

Miller, David
D.M. Miller, The Provo Shoreline of Lake Bonneville, Developments in Earth Surface Processes, Volume 20, 2016, Pages 127-144, ISSN 0928-2025, http://dx.doi.org/10.1016/B978-0-444-63590-7.00007-X.

Year Published: 2016

Spatial database for a global assessment of undiscovered copper resources: Chapter Z in Global mineral resource assessment

As part of the first-ever U.S. Geological Survey global assessment of undiscovered copper resources, data common to several regional spatial databases published by the U.S. Geological Survey, including one report from Finland and one from Greenland, were standardized, updated, and compiled into a global copper resource database. This integrated...

Zientek, Michael L.; Hammarstrom, Jane M.; Johnson, Kathleen M.; Dicken, Connie L.; Dunlap, Pamela; Parks, Heather L.; Hammarstrom, Jane M.; Zientek, Michael L.
Dicken, C.L., Dunlap, Pamela, Parks, H.L., Hammarstrom, J.M., and Zientek, M.L., 2016, Spatial database for a global assessment of undiscovered copper resources: U.S. Geological Survey Scientific Investigations Report 2010–5090–Z, 29 p., and GIS data, available at http://dx.doi.org/10.3133/sir20105090Z.

Year Published: 2016

Aeromagnetic map of northwest Utah and adjacent parts of Nevada and Idaho

Two aeromagnetic surveys were flown to promote further understanding of the geology and structure in northwest Utah and adjacent parts of Nevada and Idaho by serving as a basis for geophysical interpretations and by supporting geological mapping, water and mineral resource investigations, and other topical studies. Although this area is in general...

Langenheim, Victoria

Year Published: 2016

GIS methodology for geothermal play fairway analysis: Example from the Snake River Plain volcanic province

Play fairway analysis in geothermal exploration derives from a systematic methodology originally developed within the petroleum industry and is based on a geologic and hydrologic framework of identified geothermal systems. We are tailoring this methodology to study the geothermal resource potential of the Snake River Plain and surrounding region....

DeAngelo, Jacob; Shervais, John W.; Glen, Jonathan; Nielson, Dennis L.; Garg, Sabodh; Dobson, Patrick; Gasperikova, Erika; Sonnenthal, Eric; Visser, Charles; Liberty, Lee M.; Siler, Drew; Evans, James P.; Santellanes, Sean

Year Published: 2016

Hyperspectral surveying for mineral resources in Alaska

Alaska is a major producer of base and precious metals and has a high potential for additional undiscovered mineral resources. However, discovery is hindered by Alaska’s vast size, remoteness, and rugged terrain. New methods are needed to overcome these obstacles in order to fully evaluate Alaska’s geology and mineral resource...

Kokaly, Raymond F.; Graham, Garth E.; Hoefen, Todd M.; Kelley, Karen D.; Johnson, Michaela R.; Hubbard, Bernard E.
Kokaly, R.F., Graham, G.E., Hoefen, T.M., Kelley, K.D., Johnson, M.R., and Hubbard, B.E., Hyperspectral surveying for mineral resources in Alaska: U.S. Geological Survey Fact Sheet 2016-3029, 2 p., http://dx.doi.org/10.3133/fs20163029.

Year Published: 2016

The Pilot Valley shoreline: An early record of Lake Bonneville dynamics: Chapter 3

The Pilot Valley shoreline is named for distinctive gravel beaches on the eastern, northern, and western sides of Pilot Valley playa, Utah. The shoreline has been identified across the Bonneville basin where it is characterized by one to three beach crests between ~ 1305 and 1309 m elevation, all overlain by deep-water marl of Lake...

Miller, David; Phelps, Geoffrey

Year Published: 2016

Accretionary lapilli: what’s holding them together?

Accretionary lapilli from Tagus cone, Isla Isabela, Galápagos were analyzed using scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) techniques. Our main findings are (1) the lapilli formed and hardened in a few minutes while still aloft in the dispersing eruption column. (2) Palagonite rinds developed first...

Adams, Paul M.; Lynch, David K.; Buesch, David C.
Adams, P.M., Lynch, D.K., and Buesch, D.C., 2016, Accretionary lapilli: what’s holding them together? in Reynolds, R.E., ed, “Going LOCO: Investigations along the Lower Colorado River”, California State University Desert Studies Consortium, p. 256-265.

Filter Total Items: 82
Image shows a cubical sample of pyrite with a quartz crystal extending beneath it
2016 (approx.)
A sample of pyrite and quartz. Iron pyrite, also known as Fool's Gold due to its resemblance to gold, often occurs in quartz veins. Pyrite is an important source of sulfur dioxide, which is primarily used to create sulfuric acid, an important industrial acid. In fact, consumption of sulfuric acid has been regarded as one of the best indexes of a nation's industrial development. More sulfuric acid...
Image shows a sample of pyrrhotite against a black background
2016 (approx.)
Pyrrhotite is an iron sulfide mineral related to iron pyrite, which is one of the minerals known as Fool's Gold. Pyrrhotite, although not one of the Fool's Gold minerals, is sometimes called magnetic pyrite as it is weakly magnetic. It is most valued as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Eagle Mine, Michigan, and is 4.5cm in size.
Image shows a sample of rutile against a black background
2016 (approx.)
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 (TiO 2 ), a white pigment used in paints, paper, and plastics. Read more about titanium here , and learn about the titanium industry here ...
Image shows a sample of axinite against a black background
2016 (approx.)
This is a sample of axinite with iron, making it ferroaxinite. Axinite is primarily used as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Puiva Mount, Russia, and is 3.0cm in size.
Image shows a sample of cerussite on a black background
2016 (approx.)
This sample is of the mineral cerussite, once an important source of lead for paints and pigments. With the phasing out of lead-based paints, cerussite is now mostly valued as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Mibladen, Morocco, and is 5.6cm in size.
Image shows a sample of clinozoisite against a black background
2016 (approx.)
This sample is clinozoisite, a calcium aluminum silicate mineral. It is mostly prized as a collectors mineral rather than a source of its industrial mineral commodities. Sample provided by Carlin Green, USGS. Sample originated from Hachupa, Pakistan, and is 6.0cm in size.
Image shows a sample of epidote and quartz against a black background
2016 (approx.)
Epidote is a silicate mineral used mostly as a semiprecious gemstone. Sample provided by Carlin Green, USGS. Sample originated from Prince of Wales Island, Alaska, and is 6.0cm in size.
Image shows a sample of gold against a black background
2016 (approx.)
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 here . Sample provided by Carlin Green, USGS. Sample...
Image shows a sample of torbernite against a black background
2016 (approx.)
Torbernite is a copper phosphate mineral that contains uranium, making it somewhat radioactive. Although it can be used as a uranium ore, it's more valued as a collectors mineral. It can be used as a good indicator of uranium deposits, however. Sample provided by Carlin Green, USGS. Sample originated from Musonoi Mine, Democratic Republic of the Congo, and is 5.0cm in size.
Image shows a sample of augelite and quartz on a black background.
2016 (approx.)
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.
Image shows a sample of Apophyllite and Prehnite on a black background
2016 (approx.)
These two minerals are apophyllite and prehnite. Both apophyllite, the clear crystals, and prehnite, the green mineral, are primarily prized as collectors minerals. Sample provided by Carlin Green, USGS. Sample originated from Virginia Crushed Stone Quarry, Virginia, and is 4.6cm in size.
Image shows a sample of azurite and malachite against a black background
2016 (approx.)
A sample of azurite, the blue mineral, and malachite, the green mineral. Both azurite and malachite are copper minerals that were once used as pigments but are now mostly valued as collectors minerals. They do serve as good indicators of copper deposits that can be developed. Read more information about copper here . Sample provided by Carlin Green, USGS. Sample originated from Milpillas Mine,...
Filter Total Items: 103
Image shows sagebrush lands with cloudy sky
October 4, 2016

At the request of the Bureau of Land Management, USGS has released an assessment of mineral resources in six Western states.

Image shows the seminar poster with the date and time of the seminar
August 15, 2016

We're live-streaming this seminar at 1:00pm ET on our Facebook page: https://www.facebook.com/USGeologicalSurvey/ Check it out!

Image shows a man standing ankle-deep in a stream with an orange sampler
July 18, 2016

“Whatcha gonna do when they come for you”-thinks this week’s EarthWord...

Illustrated map of Iran showing various mining sites and refining/smelting plants of nonfuel minerals.
July 11, 2016

The USGS released a publication highlighting the nonfuel minerals industry of Iran. 

USGS logo
July 7, 2016

Alaska is a major producer of base and precious metals and has a high potential for additional undiscovered mineral resources. However, discovery is hindered by Alaska’s vast size, remoteness and rugged terrain. New methods are needed to overcome these obstacles in order to evaluate Alaska’s geology and mineral resource potential.

Painting - Denali in Midsummer
June 21, 2016

The U.S. Geological Survey has produced a new compilation of landscape-scale sediment and soil geochemical data for Alaska. This was last completed nearly 40 years ago in 1978, but the new effort uses modern modeling and analysis techniques to map 68 elements across a newly developed and updated geochemical atlas of Alaska.

Image shows sunrise through a drill rig
June 8, 2016

This is the second-largest assessment of potential shale & tight gas resources that the USGS has ever conducted.