Eastern Mineral and Environmental Resources Science Center

Multimedia

Filter Total Items: 30
Image shows a sample of torbernite against a black background
December 31, 2016

Torbernite

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

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Image shows a sample of Apophyllite and Prehnite on a black background
December 31, 2016

Sample of Apophyllite and Prehnite

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 cerussite on a black background
December 31, 2016

Sample of Cerussite

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.

bertrandite nodule
December 31, 2016

Nodule from Spor Mountain

Large layered nodule from the Roadside pit, Spor Mountain, Utah, showing fluorite, opal, and bertrandite mineralization. Beryllium is concentrated in the outer opal-fluorite zone; such samples can contain as much as 1-percent beryllium as bertrandite.

Image: Mineralization
January 1, 2010

Mineralization

Mineralized section in the Cerro Maimón copper-gold-silver mine in the Dominican Replublic.

Image: Loading & Unloading
January 1, 2010

Loading & Unloading

Mine trucks transporting material from the Cripple Creek and Victor Gold Mine in Colorado.