Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Expansive Soil Causes more damage than floods, hurricanes & tornadoes combined.
Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Shale - The rock that has quickly transformed the oil and gas industry.
||Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
||What is Geology?
What is Geology? - The study of Earth materials, structures, processes and life over time.
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-colors
|Lightning Strikes Map
Lightning Strikes Map - A NASA map showing the worldwide distribution of lightning activity.
||What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
||US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Crushed Stone - About four tons per person is used each year in the United States.
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Gold Pans and Panning Kits - classifiers, snuffer bottles. Pans sized for kids to Goliath.
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.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Meteorites - Rocks that were once parts of planets or large asteroids.
|Utica Well Density
Utica Well Density A surprising density of horizontal wells in the Utica Shale of Ohio.
||Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
||USA Landslide Map
Landslide Incidence Map - A USGS map showing landslide incidence in the United States.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Diamonds - Learn about the properties of diamond, its many uses and diamond discoveries.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Deepest Lake in the World Lake Baikal in southern Russia is the deepest lake in the World.
Emerald is the most popular green gemstone in the United States and most of the world.
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
||What Are Minerals?
Minerals are the building blocks of our society. We use items made with them every day.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.
||What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.
|Uses of Gold
The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Rock Bags - Durable field bags with pockets for carrying maps, books, specimens and tools.
|UV Mineral Lamp
Portable UV Lamp - short / long wave for fluorescent minerals. Safety glasses included.
||Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Chalcopyrite - The most important ore of copper for over five thousand years.
||Huge Diamond Deposit
The Largest Diamond Deposit in the world could be under Popigai Crater in Russia.
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
||Types Of Eruptions
Types of Volcanic Eruptions - A description of the most common eruption types.
Wall Maps - Wall maps of the world, continents, states and the USA.
Mineral Rights Who owns the minerals under your land? Who wants to buy them?
Rock Art - People have been marking on rocks for thousands of years.
||Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Petrified Wood is a fossil that forms when dissolved material preciptates and replaces wood.
|Rocks on Mars
Rocks on Mars - Many of the rocks found on Mars are not very different from Earth rocks.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Rock Kits for classroom and personal study. A great way to learn about rocks.
|Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Range of Bear Species - Where you might encounter different types of bears.
Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah.
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
||Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
World Record Lightning - this lake has more lightning than any other place in the world.
||Sea Level Rise Maps
Sea Level Rise Maps - See what will be flooded as sea level rises.
||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.
Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.
||Arctic Seafloor Map
Arctic Ocean Seafloor Map The ridges, basins, shelves and rifts defining the Arctic seafloor.
Pavlof Volcano - one of the most active volcanoes in North America and threat to air traffic.
||Help K-12 Teachers
DonorsChoose.org allows you to support science projects proposed by K-12 teachers.
||Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
|Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
||The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Canadian Diamond Mines produce some of the largest and highest quality gems!
Diamond Production leaders include: Botswana, Russia, Angola and Canada.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
||Asteroid Impact Map
Asteroid Impact Map - Explore fifty of the most obvious asteroid impact craters on Earth.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
||Fireworks & Minerals
The Science of Fireworks Learn how the colors and shapes are created.
Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
||San Andreas Fault
The San Andreas Fault - A feature that separates the Pacific and North American Plates.
Gemstones - Colorful images and articles about diamonds and colored stones.
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
||What Is The Moho?
What Is The Moho? Learn about the Mohorovicic Discontinuity - the mantle/crust boundary.
Olivine Rain? Spitzer Telescope discovered a rain of olivine crystals on protostar HOPS-68.
|Land Below Sea Level
Land Below Sea Level - Did you know that dozens of land locations are below sea level?
||Geology of Helium
Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
||Geology of Gems
Geology of Gems - The first comprehensive book on the geology of gem deposits.
|San Andreas Fault Map
Google Map of the San Andreas Fault Zoom in to see the fault trace on satellite images.
||What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
||June 6, 1912
June 6, 1912 - The most powerful volcanic eruption of the 20th century.
|Ant Hill Garnets
Ant Hill Garnets are tiny garnets that ants haul to the surface and discard on their anthill. Honest!
||What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Chatoyant Gems look like the eye of a cat. A line of light moves across the surface of the stone.
Salt Domes - Salt structures that are often associated with oil and natural gas.
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Granite - The intrusive igneous rock that underlies continents and countertops.
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
||What are Glaciers?
What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.
Homeowners Insurance usually does not cover the most common geologic hazards.
Diamond Misconception - Lots of people think that diamonds form from coal. Not True!
||Facts About Copper
Facts About Copper - Information about copper uses, production, resources and more.
Horizontal Drilling has opened new resources and significantly improved productivity.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
||Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Dowsing is a method used to find underground water that is rejected by most geologists.
|Oil Fields from Space
Oil Fields from Space - Night views of Earth show the distribution of oil field activity.
Teacher Resources - K-12 resources for teaching about earth science.
||Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
California Earthquake Maps A collection of isoseismal maps for earthquakes in California.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.
Hydraulic Fracturing - Increases well yield by fracturing the reservoir rock with fluid injection.
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Gfeller Leather field cases, hammer holsters, lanyards, field belts, acid bottle cases, more.
Tourmaline - the most colorful mineral and natural gem material on Earth.
Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.
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.
Fossils - Learn about fossils and discoveries around the world.
||Oil and Gas
Oil and Gas - Articles about oil and natural gas in the US and around the world.