Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Minerals Descriptions, photos, articles, properties and uses for common minerals.
Shale - The rock that has quickly transformed the oil and gas industry.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Hydraulic fracturing increases well yield by fracturing the reservoir rock with fluid injection.
|Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
||Life on Europa?
Life on Europa could exist in a salty ocean deep below its frozen surface.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
||What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
|Rocks on Mars
Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Wall Maps - Wall maps of the world, continents, states and the USA.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Rock Art - People have been marking on rocks for thousands of years.
Mineral Rights Who owns the minerals under your land? Who wants to buy them?
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
||Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
||What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
||Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries.
||Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
||Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood.
||Eagle Ford Shale
Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.
||Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
Canada is one of the world*s leading producers of gem-quality diamonds.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Gemstones - Colorful images and articles about diamonds and colored stones.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
||Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Rock Kits for classroom and personal study. A great way to learn about rocks.
|The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
||San Andreas Fault
The San Andreas Fault - A feature that separates the Pacific and North American Plates.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Granite - The intrusive igneous rock that underlies continents and countertops.
||What is Geology?
What is Geology? - The study of Earth materials, structures, processes and life over time.
World Record Lightning - this lake has more lightning than any other place in the world.
Homeowners Insurance usually does not cover the most common geologic hazards.
||What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Range of Bear Species - Where you might encounter different types of bears.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
||Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
|Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
||Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Teacher Resources - K-12 resources for teaching about earth science.
Deepest Lake in the World Lake Baikal in southern Russia is the deepest lake in the World.
||Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
||Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
|Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
||Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
||The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
||What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Dowsing is a method used to find underground water that is rejected by most geologists.
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Diamond Misconception - Many people think that diamonds form from coal. Not True!
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Field Courses - Over 80 field courses for undergraduate geology students.
Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
||USA Landslide Map
Landslide Incidence Map - A USGS map showing landslide incidence in the United States.
||What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Tourmaline - the most colorful mineral and natural gem material on Earth.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Meteorites - Rocks that were once parts of planets or large asteroids.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
||Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Emerald is the most popular green gemstone in the United States and most of the world.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
|Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Sand is a diverse material. This gallery includes photos of sand from around the world.
||Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
|Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Horizontal Drilling has opened new resources and significantly improved productivity.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Chalcopyrite - The most important ore of copper for over five thousand years.
||June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
||What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
|San Andreas Fault Map
Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.
||Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
||Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
||Huge Diamond Deposit
The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
Expansive Soil Causes more damage than floods, hurricanes & tornadoes combined.
|US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Pans sized for kids to Goliath.
|UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
California Earthquake Maps A collection of isoseismal maps for earthquakes in California.
||Arctic Seafloor Map
Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Crushed Stone - About four tons per person is used each year in the United States.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Pavlof Volcano - one of the most active volcanoes in North America and threat to air traffic.
Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
Fossils - Learn about fossils and discoveries around the world.
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
|Fee Mining Sites
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
||Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.