Rocks

Most Popular Free Guide to Rock Tumbling: Step-by-step guide to tumble polishing rocks into gemstones. Also, How to Select a Tumbler. Sliding Rocks - Racetrack Playa How these rocks slide across a dry lake bed is a mystery. Photo © iStockphoto / Stephan Hoerold Spectacular Yosemite Rockfall: A photo sequence of rockfall and debris avalanche by Herb Dunn. Wall Arch Collapses: Wall Arch, a popular feature at Arches National Park Collapsed in the night on August 4, 2008. Petroglyphs and Pictographs A world-wide collection of rock art. © iStockphoto / Kevin Lange. Mineral Rights / Surface Rights Who owns the minerals under your land? Have they been sold? Opal Pictues and Descriptions: A colorful photo gallery showing different types of opal. "A Grain of Sand": A gallery of sand grains from around the world as photographed through a microscope by Dr. Gary Greenberg. If it is not grown, it is mined. Igneous Igneous Rocks: Photos and facts about intrusive and extrusive igneous rocks. Andesite Basalt Diorite Gabbro Granite Obsidian Pegmatite Peridotite Pumice Rhyolite Scoria Tuff Uses of Granite: The rock used everywhere from the kitchen to the facing stone of skyscrapers. Carbonatite Lava Flows: Some of the most fluid lavas in the world! Oil is found first in the mind.

Metamorphic Metamorphic Rocks: Photos and facts about foliated and non-foliated metamorphic rocks. Amphibolite Gneiss Hornfels Marble Phyllite Quartzite Schist Slate Ads by Google Weekly Mineral Auctions Amazing deals on investor quality samples. Sold at far below retail! www.mineralauctions.com/ Oil Field Composition Reservoir Fluids Testing Oil, Gas, Condensates, Drill Mud www.intertek-cb.com Geology News Spectacular Glacial Dust Plume: "In this image, the wind is blowing from... The Coldest Decade in the Past 500 Years: A previously unknown volcanic eruption in 1809 kicked... Kilimanjaro Glaciers Are Melting: An article on the CNN website reports that... New Nuclear Power Plant in Texas?: Construction of a new nuclear plant is being... Zimbabwe and Kimberly Process Standards: The Kimberly Process is a set of standards... Geology and the Taste of Wine: Discussions at the recent Geological Society of America... Can Changes in Air Pressure Trigger Landslides?: An article on the Nature.com website reports that... The Only Volcano Crisis Response Team: "Every year an average of 50 volcanoes erupt... Timor Sea Oil Well Still Leaking: More than two months after a blowout at... Galeras Volcano Threatens to Erupt: Galeras, a stratovolcano in Colombia, is threatening to... The present is the key to the past. Sedimentary Sedimentary Rocks: Photos and facts about clastic, chemical and organic sedimentary rocks. Breccia Chert Coal Conglomerate Iron Ore Limestone Rock Salt Sandstone Shale Siltstone Coal Through a Microscope: Coal is more than a black rock. It's THE most interesting rock. Marcellus Shale: The most overlooked resource in the eastern United States! Great Bahama Bank: A spectacular satellite image of the Bank, islands and surrounding ocean - a classic carbonate environment. Colorado Oil Shale: A USGS reassessment reveals that there is 50% more in-place oil than preveiously estimated. Geology un