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LARGE Pond Aerator System w Ranking integrated 1st place 200' Sink 3.9 2hp -2 1 Tube Direct stock discount Diffuser

LARGE Pond Aerator System w/200' Sink Tube -2 Diffuser 1/2hp 3.9


LARGE Pond Aerator System w/200' Sink Tube -2 Diffuser 1/2hp 3.9


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New: A brand-new, unused, unopened, undamaged item (including handmade items). See the seller's ...
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200' DIY280
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DIY Pond Aeration

LARGE Pond Aerator System w/200' Sink Tube -2 Diffuser 1/2hp 3.9

General Geology
Geologic Hazards
Oil and Gas
Plate Tectonics
Satellite Images
Teacher Resources
U.S. Maps
World Maps
World Records

Where Is Ukraine?

Ukraine is an independent state in eastern Europe that shares a border with Russia to its east.
Greatest Ocean Depth
stamps collections
Deepest Point in the Ocean The deepest point in the ocean is in the Mariana Trench.

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

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

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

Dig for Gems at dozens of sites across the United States. Keep what you find at most locations.

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

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

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

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

Crystal Habit is the external shape displayed by a crystal or an aggregate of crystals.
Sand Photo Collection

Sand from Around the World . A photo gallery showing the diversity of the material we call "sand".

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

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

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

Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
What Is The Moho?

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

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

Strawberry Quartz is a red to pink quartz with inclusions that look like strawberry seeds.

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

Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.
Bear Map

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

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

Great Lakes : Map of the Great Lakes with surrounding states and provinces.
Types of Maps

Types of Maps - Explore some of the most popular types of maps that have been made.

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

Birthstones are gems assigned to the month of a person*s birth. They are popular gifts in the U.S.
Lightning Strikes Map

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

Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Rock and Mineral Kits

Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
100+ Gemstones
In Bloom By Jonquil Womens Sleepwear White Ivory Size Large L La
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.

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.
The Brewery Rock ?

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

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

Geology Books - A variety of books for reference, field trips, reading and more.
What is a Geyser?

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

Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.

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

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

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

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

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

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

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

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

Gifts That Rock - What are the most popular gift items in the Geology.com store?
Fool*s Gold

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

Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Uses of Marble

The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
What is Geology?
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What is Geology? The study of Earth materials, structures, processes and life over time.
Petrified Wood

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

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

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

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

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

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

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

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

Tourmaline - an extremely colorful mineral and gem material.
Record Lightning

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

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

Gemstones - Colorful images and articles about diamonds and colored stones.
Types Of Eruptions

Types of Volcanic Eruptions - A description of the most common eruption types.
What is LNG?

What is LNG? Liquefied Natural Gas. The gas is condensed into a liquid for efficient transport.
The British Isles

Names Used for Great Britain, British Isles, United Kingdom, and Ireland. What they mean.
Mineral Luster

What Is Luster? Luster is the light-reflecting characteristics of a mineral specimen.

Andalusite is a metamorphic mineral and a strongly pleochroic gem material.
Largest Earthquake

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

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

Curling Stones are made from a special type of granite, found at just a few locations worldwide.
Crater of Diamonds

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

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

World*s Largest Diamonds Records for the largest rough, faceted and carbonado diamond.
US Diamond Mines
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US Diamond Mines - Did you know that diamonds have been mined in the United States?
Grape Agate

Grape Agate is a popular mineral specimen with the color and the shape of a bunch of grapes.
What Is Earth Science?

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

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

Mined in America - Small mines in the United States produce a diversity of beautiful gemstones.
Rock Salt

Rock Salt is a sedimentary rock composed of the mineral halite. It has many uses!
Map of the Oceans

Map of the Oceans - showing the Atlantic, Pacific, Indian, Arctic, and Southern Oceans.
Green River Fossils

The Green River Formation is one of the most famous rock units in the world for its fossils.
Darvaza Gas Crater

The Doorway to Hell is a flaming sinkhole seeping natural gas that has been burning for decades.

Citrine is the transparent variety of quartz with a yellow to orange to reddish color.

Copper is a metal used in coins, electronics, pipes, wiring, motors, alloys and many other products.
Storm Surge

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

Charoite is a purple silicate mineral, found only in Russia, used as a gem material.

Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
San Andreas Fault

What is the San Andreas Fault? Map, photos and description of the fault.

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

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

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

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

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

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

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

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

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

RAVENOUS guy pearce-Framed original advert is a set of reference minerals used for classroom hardness testing.
Cave of the Hands

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

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

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

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.
Teacher Resources

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

Cinder Cones are the smallest, simplest, and most common type of volcano.
Rocks on Mars

Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.
Mount Vesuvius

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

The Science of Fireworks Learn how the colors and shapes are created.
Watch out for Ticks!

Sierra Alpha Drive Shaft 18-2261 are a problem for geologists in some areas. Learn to recognize and avoid them.
Crushed Stone

The Unsung Mineral Hero - and the commodity upon which almost everything is built.

Emerald is the most popular green gemstone in the United States and most of the world.
Homeowners Insurance
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Homeowners Insurance might not cover earthquake, hurricane and other geohazard damage.
Hand Lens

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

Spatter Cones are small, steep, volcanic cones built of welded basaltic lava.
Gold Pans

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

Blue Flames 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.

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

Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Fire Opal
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Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Hawaiian Hot Spot

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

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

Hawaii*s Next Island could be growing in the Pacific Ocean right now. Its name is Lo*ihi.
Tallest Tsunami

Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Largest Volcanoes
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Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Debris Flows

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

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

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

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

Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.
Waterproof Paper

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

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

Anita Toddlers Lot of 3 Sets Ponytail Holders Black Green Burgun is a variety of limestone formed from fine-grained marine sediment known as ooze.
Ruby and Sapphire

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

Morganite is an orange to pink gemstone, a variety of beryl, that is growing rapidly in popularity.
Mars Meteorites

Mars Meteorites Mars rovers have found dozens of meteorites while exploring the red planet.
Don*t Go To Jail

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

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

Coquina - A porous limestone composed almost entirely of fossil debris.
Field Courses

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

California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.
June 6th 1912

Novarupta - The most powerful volcanic eruption of the 20th century occurred in the U.S.A.

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

Angel Falls in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.