Categories
Largest Volcanoes
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
What Is Earth Science?
What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
Gem Silica
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Underwater Volcano
Hawaii*s Next Island could be growing in the Pacific Ocean right now. Its name is Lo*ihi.
Coal Close Up
Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Largest Diamonds
World*s Largest Diamonds Records for the largest rough, faceted and carbonado diamond.
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
100+ Gemstones
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Darvaza Gas Crater
The Doorway to Hell is a flaming sinkhole seeping natural gas that has been burning for decades.
Homeowners Insurance
Homeowners Insurance might not cover earthquake, hurricane and other geohazard damage.
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Grape Agate
Grape Agate is a popular mineral specimen with the color and the shape of a bunch of grapes.
Birthstones
Birthstones are gems assigned to the month of a person*s birth. They are popular gifts in the U.S.
Rhyolite
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Green River Fossils
The Green River Formation is one of the most famous rock units in the world for its fossils.
Waterproof Paper
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Hand Lens
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Fire Opal
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Opals
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Fool*s Gold
Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Fluorescent Minerals
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Copper
Copper is a metal used in coins, electronics, pipes, wiring, motors, alloys and many other products.
Gems from Space
Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Blue Flames
Wobble Wedges Rigid Plastic Shims 300 Pack - Multi-Purpose Shim and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Canary Islands
Where Are the Canary Islands? Off the northwest coast of Africa, 60 miles west of Morocco.
Rhodochrosite
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Tallest Tsunami
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
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The British Isles
Names Used for Great Britain, British Isles, United Kingdom, and Ireland. What they mean.
Great Rift Valley
The East Africa Rift System - The extensive fault system that is tearing Africa apart.
Geology Tools
Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Rock Tumblers
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Morganite
Morganite is an orange to pink gemstone, a variety of beryl, that is growing rapidly in popularity.
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Cinnabar
Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
June 6th 1912
Novarupta - The most powerful volcanic eruption of the 20th century occurred in the U.S.A.
Tanzanite
4L60E 13V Pump Overdrive Rebuild 3/4 Piston Alto W/ Steels FilTanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Record Lightning
World Record Lightning - this lake has more lightning than any other place in the world.
Mineral Hardness
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Map of the Oceans
Map of the Oceans - showing the Atlantic, Pacific, Indian, Arctic, and Southern Oceans.
Mars Meteorites
Mars Meteorites Mars rovers have found dozens of meteorites while exploring the red planet.
Tallest Mountain
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Shale
Timing Belt Tensioner ~ Fits Mazda 2.0L FE ~ TT109Shale - The rock that has quickly transformed the oil and gas industry.
Crystal Habit
Crystal Habit is the external shape displayed by a crystal or an aggregate of crystals.
Volcanic Explosivity
Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Sliding Rocks
Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Hawaiian Hot Spot
Osg 1725401 Spiral Point Tap, 1"-8, Plug, Unc, 3 Flutes, Oxide The power of a moving plate over a stationary hot spot.
Largest Hurricanes
Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
Petrified Wood
Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Colored Diamonds
Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.
Peridotite
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Pyroxene Minerals
Pyroxene Minerals are a group of chain silicate minerals found in igneous and metamorphic rocks.
Tallest Waterfall
Angel Falls in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.
Phytoplankton Blooms
Phytoplankton Blooms are caused by an explosive growth rate of plankton in surface waters.
Earthquake Maps
California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
Greatest Ocean Depth
Deepest Point in the Ocean The deepest point in the ocean is in the Mariana Trench.
Soapstone
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Mount Etna
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Utica Shale
Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.
American Gemstones
H000466 Donaldson Inlet Hood, Plastic - Small mines in the United States produce a diversity of beautiful gemstones.