EPOD - a service of USRA

09/12/23 Spiral Pattern in Australian Opal

07/18/23 Opal Pseudomorphs

06/07/23 Opalized Coprolite

02/07/23 La Scala dei Turchi

01/09/23 Subterranean Cathedral of Salt in Sicily

07/20/22 Dendrite Inclusion in Opal

04/06/22 Muonionalusta Siderite Sample

03/29/22 Rainbow Pyrite

01/10/22 Above Great Salt Lake: Colors, Contrasts, Arcs, and Angles

01/05/22 Calcite Crystals and Earth’s Microbial History

10/16/21 Archive - Pamukkale, Turkey

08/19/21 Atoms and Molecules

08/14/21 Archive - Bonneville Salt Flats Panorama

06/16/21 Mineral Moon and ISS Transit

02/25/21 Opalescent Fossil Shells

01/09/21 Archive - Black Hills Flume

11/06/20 Dendrites in Amber

09/23/20 EPOD 20th - Rubies and Lapis Lazuli

09/18/20 EPOD 20th - Calcite Crystals and Microbial Activity Within the Earth's Crust

07/18/20 Encore - Salar de Atacama

07/09/20 The Beaver's Tale

06/25/20 Young Lava and Old Olivine

05/25/20 Field of Balls at Ichigualasto Provincial Park

04/09/20 The Bismantova Stone

02/02/20 Archive - Sulfur

10/26/19 Encore - Preserved in Amber

10/24/19 Signatures for Ancient Life in Europe’s Largest Impact Structure

10/01/19 Rimstone Dams at the El Tatio Geyser Field

09/22/19 Archive - Saw Mill at Ramon Crater, Israel

09/04/19 Clay Pebbles in Providence Canyon, Georgia

08/25/19 Archive - Bentonite Hills of Utah

08/21/19 Indian Rock

08/12/19 Sandstone Cliff Erosion on De Courcy Island, British Columbia

08/04/19 Archive - Obsidian in Pennsylvania

06/04/19 Apache Tears

05/03/19 Roadside Outcrop Near Malibu, California

04/16/19 Travertine Fossil Leaves in the Getty Center

03/26/19 Crack in the World

02/20/19 Triassic Gypsums in the Secchia River Valley

02/05/19 Caldera of Sierra Negra on Isabela Island

01/24/19 Volcanic Tuff in Central Utah

01/12/19 Encore - Moqui Marbles and Martian Blueberries

01/10/19 Intrusive Igneous Dike in Northwestern Arizona

01/07/19 The Elkhorn Mountains

12/27/18 Salton Sea Salt Formations

11/07/18 Faulting of Folded Paleocene Limestone

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