Geology and Earth Science News and Information

Meteorites - Rocks that were once parts of planets or large asteroids.

Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.

Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.

Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!

Geology.com News contains news about geology and earth science from around the world.

Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.

Moldavite is a gem material born about 15 million years ago when a pair of asteroids struck Europe.

Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.

Extraterrestrial Gems - A number of materials from space are used as attractive gems.

Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.

Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.

Minerals - Descriptions, photos, articles, properties and uses for common minerals.

Wall Maps - Wall maps of the world, continents, states and the USA.

Solar System Volcanoes - Earth is not the only location of volcanic activity.

Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.

Arctic Ocean Seafloor Map - The ridges, basins, shelves and rifts defining the Arctic seafloor.

Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.

Geology Dictionary - contains thousands of geological terms with their definitions.

Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.

Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.

The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.

Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.

Ethiopian Opal - The new opal heavyweight that might give Australia a run.

Free Google Earth software allows you to browse seamless world satellite images. Free.

Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.

Debris Flows are moving masses of loose mud, sand, soil, rock and water.

How Are Hurricanes Named? There is a plan for naming tropical storms.

Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.

The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.

100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.

Geodes look like ordinary rocks on the outside but can be spectacular inside!

Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?

Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.

Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.

Geology Books - A variety of books for reference, field trips, reading and more.

What Is Earth Science? The study of Earth and its neighbors in space. Learn more!

Spectacular Diamonds have an exceptional size, color, clarity, crystal form or other property.

United States Gemstones Small mines in the U.S. produce a diversity of gemstones.

The Many Uses of Gold - Unique properties make gold one of the most useful metals.

Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.

Know the Rules before removing rocks, fossils or minerals from public or private property.

What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.

Green Diamonds - one of rarest and most valuable diamond colors.

Crater of Diamonds - The only diamond mine in the world where you can be the miner.

Gemstones - Colorful images and articles about diamonds and colored stones.

Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.

Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.

Storm Surge can be the most damaging and deadly aspect of a hurricane.

Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.

Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.

Granite - The intrusive igneous rock that underlies continents and countertops.

Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.

Kilauea Eruption - photos of the 2018 eruption in the East Rift Zone of Kilauea Volcano.

Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?

Teacher Resources - K-12 resources for teaching about earth science.

Dowsing is a method used to find underground water that is rejected by most geologists.

Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.

Helium is a byproduct of the natural gas industry. Its most important use is in MRI.

The East Africa Rift System - The extensive fault system that is tearing Africa apart.

Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.

What are Glaciers? Learn how glaciers form, flow, advance, retreat, and change over time.

Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.

Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.

Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.

Facts About Copper - Information about copper uses, production, resources and more.

Rock Art - People have been marking on rocks for thousands of years.

Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.

Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.

Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!

Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.

Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.

Variscite is a yellowish green to bluish green mineral. It is similar to turquoise and cut as a gem.

The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.

Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.

The Uses of Marble are numerous and diverse. You will be surprised by how it is used.

Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.

Field Courses - Over 80 field courses for undergraduate geology students.

Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.

How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.

Abandoned Mine Accidents kill several people every year. Education can prevent deaths.

California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.

Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.

Sunstone - A gem feldspar with aventurescence caused by light reflecting from platy inclusions.

Emerald is the most popular green gemstone in the United States and most of the world.

Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.

Canadian Diamond Mines produce some of the largest and highest quality diamonds!

Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.

Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.

Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.

Pavlof Volcano - one of the most active volcanoes in North America and a threat to air traffic.

Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.

Diamond Misconception - Many people think that diamonds form from coal. Not True!

Types of Volcanic Eruptions - A description of the most common eruption types.

Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.

Mineral Rights - Who owns the minerals under your land? Who wants to buy them?

Rare Earths - Special materials used in electronics, defense, medical & many other products.

Shale - The rock that has quickly transformed the oil and gas industry.

Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.

Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.

Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.

Range of Bear Species - Where you might encounter different types of bears.

Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.

Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.

World Record Lightning - this lake has more lightning than any other place in the world.

Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.

What is a Maar? The second most common volcanic landscape feature on Earth.

Steamboat Geyser - The world*s tallest geyser has erupted three times this year.

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.

Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.

Ilmenite - The primary ore of titanium and source of most titanium dioxide.

Hematite - The most important ore of iron. A source of mineral pigment since prehistory.

Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.

Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.

What is Geology? The study of Earth materials, structures, processes and life over time.

Tourmaline - an extremely colorful mineral and gem material.

June 6, 1912 - The most powerful volcanic eruption of the 20th century.

Zircon is the primary ore of zirconium and a gemstone that is available in many colors.

Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.

The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.

Pele*s Hair and Pele*s Tears are two unusual types of lava found at Kilauea and other volcanoes.

Diamond Production leaders include: Botswana, Russia, Angola and Canada.

Pictures of Opal - A collection of different types of opal from all around the world and Mars too!

Homeowners Insurance might not cover the types of damage that you think it should.

Rock-Forming Minerals - most of Earth*s crust is made-up of a small number of minerals.

Fossils - Learn about fossils and discoveries around the world.

Salt Domes - Salt structures that are often associated with oil and natural gas accumulations.

Oil and Gas - Articles about oil and natural gas in the US and around the world.

Azurite Granite ? A white granite with blue orbs of azurite. A new material from Pakistan.

Oil Fields from Space - Night views of Earth show the distribution of oil field activity.

Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.

Landslides A USGS fact sheet about landslides and events that trigger them.

Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.

Frac Sand - A specialty sand used to maintain porosity in hydraulic fracturing.

Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.

What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.

Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.

Sand is a diverse material. This gallery includes photos of sand from around the world.

US Diamond Mines - Did you know that diamonds have been mined in the United States?

Turquoise - A bluish-green gem material that has been used for over 6000 years.

Horizontal Drilling has opened new resources and significantly improved productivity.

Eagle Ford Shale - One of the most prolific oil and gas producers in the United States.

Vanadinite is an important ore of vanadium and a minor source of lead.

Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.

Hydraulic Fracturing increases well yield by fracturing the reservoir rock with fluid injection.

What is a Geyser? Photos and information about geysers in many parts of the world.

Crushed Stone - About four tons per person is used each year in the United States.