Geology and Earth Science News and Information

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

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

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

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

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

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

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

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

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

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

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

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

Incandescent Lava flows from Fissure 8 in the East Rift Zone of Kilauea Volcano.

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

Horizontal Drilling has opened new resources and significantly improved productivity.

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

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

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

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

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

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

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

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

Tourmaline - an extremely colorful mineral and gem material.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.

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

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

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

Homeowners Insurance usually does not cover the most common geologic hazards.

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

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

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

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

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

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

Chalcopyrite - The most important ore of copper for over five thousand years.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Fossils - Learn about fossils and discoveries around the world.

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

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