EPOD - a service of USRA

11/01/18 Pillow Basalts and Radiolarian Cherts

10/13/18 Encore - Glomerocryst Photomicrograph

10/11/18 Isla de los Estados, Argentina

03/25/18 Archive - Chrysotile

03/07/18 Garzweiler Coal Mine in Germany

02/05/18 Valley of Fire in Nevada

01/18/18 Concretions Decorate the Grounds of the MetraPark

01/16/18 Snow Canyon State Park

11/16/17 Mining Salt in France

06/20/17 Tabby Concrete

05/18/17 Calcite Crystals and Microbial Activity Within the Earth's Crust

05/05/17 Yellow Rocks in the Agrio River

04/07/17 Colorful Landscape of Zhangye Danxia Geopark, China

03/30/17 Florissant Fossil Beds National Monument

03/05/17 Archive - Zincite Crystals

02/21/17 Liesegang Phenomenon in a Granite Panel

01/19/17 Cave Creek Golden Reef Mine Stamp Mill

01/09/17 Accidental Discoveries: Unusual Salt Crystal Whiskers

10/07/16 Red Canyon in Israel

08/04/16 Mining Tailings Viewed from Aloft

06/10/16 Bendigo Gravels

04/19/16 Cardona Salt Mountain, Spain

01/15/16 Lake Superior Agate

08/20/15 Las Médulas, Spain

08/13/15 Borax Mine In California

05/31/15 Rio Tinto's Red Water

05/18/15 Copper from Timna Valley, Israel

05/12/15 Iron-rich Granitic Inclusions in British Columbia

05/01/15 Marbles and Sandstone in Snow Canyon

02/09/15 Red Creeks in the Western Alps

09/21/14 Bedded Chert at Marin Headlands

09/17/14 Salar de Atacama

08/04/14 The Richest Hole on Earth -- Bingham Canyon Mine

07/15/14 Waiotapu Mud Pool

06/06/14 Behrens Trench

04/02/14 Eucryptite Fluorescence

02/06/14 Sulfur

01/30/14 Preserved in Amber

09/22/13 Saw Mill at Ramon Crater, Israel

09/16/13 Pamukkale, Turkey

08/14/13 Bentonite Hills of Utah

08/07/13 Obsidian in Pennsylvania

07/02/13 Ribbons of Coal in Utah

05/21/13 Bonneville Salt Flats and Pilot Peak

05/19/13 Moqui Marbles and Martian Blueberries

05/05/13 Gypsum Quarry Restoration at Ramon Crater

12/15/12 Metamorphic Rock Structure Reflected in Soil Profile

02/26/12 Dodecahedron Geode

01/29/12 Oil Platform in the Strait of Hormuz

12/10/11 Efflorescence