Energy and Minerals


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


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 azurite and malachite against a black background
December 31, 2016

Azurite and Malachite

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.

Image shows a large black stone with a silver sign in front
July 20, 2016

Cannel Coal

Cannel coal is a type of bituminous coal, which is the second-highest rank of coal (just behind anthracite). This particular sample has a high carbon content with high pollen and spore content as well. Unlike most bituminous coal, Cannel coal can be carved into ornaments. This sample came from the Eastern Interior Coalfield in Kentucky.

Image shows a tall, triangular gray stone surrounded by grass and trees
July 20, 2016

Barre Granite

Granite is an igneous rock that we’ve used for building materials for thousands of years. It’s name comes from the Latin word “granum,” meaning “grain,” which refers to the grains of quartz and feldspar that define granite. This one is from the Barre formation in Vermont.

Attribution: Energy and Minerals
Image shows four men in visibility gear and hard hats at a coal mine
June 30, 2016

The USGS Coal Assessment Project

Coal project personnel visiting Trapper Mine in northwest Colorado in June, 2016.

Mostly beige rock with lots of round orbs contained within its matrix.
June 14, 2016

Phosphorite rock

Phosphorite rock formed on the seafloor in Southern California.

Image shows a woman in a green coat working with a drill core
June 3, 2016

Sarah Hawkins Receives the Core

USGS scientist Sarah Hawkins, lead scientist for the Mancos Shale assessment, examining a core drilled by the USGS Core Research Center. This core provided valuable data for the assessment. Image credit: Joshua Hicks, USGS.

Image shows a drill rig against blue mountains
June 3, 2016

Research Drilling Rig and Landscape

The USGS Core Research Center collaborated with the USGS Energy Resources Program to drill a core from the Mancos Shale to aid in the oil and gas assessment. Image Credit: Joshua Hicks, USGS.

May 25, 2016

What's the Big Idea?—Multiple Perspectives to Answer Complex Questions

JoAnn Holloway, biogeochemist with the USGS Mineral Resources Program, explains how interdisciplinary science can help better inform the conditions of a complex ecosystem.

Red Mountain, Colorado
April 19, 2016

Red Mountain near Silverton, Colorado

Intensely altered propylitic rocks (red and yellow) in the Red Mountain mining district, overprinting the regional, propylitically altered igneous rocks (grayish-green), peaks at top of image. View to west.

Geologist doing field work in Alaska
April 14, 2016

Geologist and Helicopter

Geologist doing field work in Alaska