|Herkimer Diamonds: Learn the secrets behind finding these interesting doubly terminated quartz crystals.|
|Rock Photos: Galleries of igneous, sedimentary and metamorphic rock photos. They work well with computer projection.|
|What Does a Geologist Do? |
Learn about the interesting work of geologists in two short videos about the relevance of geology today.
|Fluorescent Minerals glow with spectacular colors when illuminated in the dark with an ultraviolet lamp.|
|What is Earth Science?It is the study of Earth and its neighbors in space. It includes geology, astronomy, meteorology & oceanography.|
|Roadside Geology Guides: A great way to learn about the geology of your home area and the perfect road trip companion. |
|Diamond: Articles, news, videos, production data, and information related to gem and industrial diamond worldwide.
|United States Gemstones: A diversity of gemstones are produced in the U.S. - mostly from very small mines and by rockhounds.|
|Rocks from Space: Intro to meteorites by Geoff Notkin, Science Channel Meteorite Man and professional meteorite hunter.|
|| Herkimer Diamonds: Amazing doubly-terminated quartz crystals that you can find and keep at a mine near Herkimer, NY.|
|Rock Tumblers: Step-by-step guide to tumbling agate, jasper, petrified wood and other rocks into beautiful gemstones. |
|What Are Minerals? They are part of nearly everything that we use: vehicles, medicine, coins, pencils, cell phones, food and more.|
|The Many Uses of Gold: Learn how the unique properties of gold make it extremely suited for a large number of industrial uses. |
| Diamond Misconceptions: Diamonds form under a variety of conditions that do not involve coal as a source of carbon.|
| East Africa Rift: One of the best places in the world to learn about plate tectonics. By James Wood and Alex Guth Michigan Tech.|
|Mohs Hardness Scale is a set of reference minerals used to estimate the relative hardness of mineral specimens.|
|Petrified Wood is a fossil that forms when dissolved solids in groundwater preciptate and replace woody material.|
|The Acid Test: Geologists use dilute hydrochloric acid to identify carbonate minerals and detect their presence in rocks.|
|Landslides: A USGS fact sheet explains different types of landslides and the kind of events that might trigger them.|
|Marcellus Shale: One of the most overlooked natural gas resources in the United States!||
|Homeowners Insurance: Most people are surprised to learn that damage done by geological hazards is usually not covered.
|Chrysoberyl is an extreme mineral with a hardness of 8.5, high dispersion, high specific gravity, cat's eye and color-change.|
|Olivine is a common rock-forming mineral of Earth's crust. It is also found in Earth's mantle and in some meteorites.|
|Fire Opal is a transparent to translucent opal with a background color of yellow, orange or red. It may or may not exhibit play-of-color.|
|Ammolite is a fossil and a gemstone. It is a layer of iridescent shell material from fossil ammonites found in Alberta, Canada.
|Rare Earth Elements: China has been dominant producer since the 1990s but the USA and Australia are producing again.|
|| Earth's Largest Volcano?Tamu Massif is the "largest" but Mauna Kea and Ojos del Salado exceed Tamu in height and elevation.|
|Utica Well Density: A Google map shows the surprising density of horizontal wells in parts of Ohio's Utica Shale.|
|Turquoise is a blue to blue-green gem material that has been used by people worldwide for over 6000 years.|
|Cave of the Hands is a cave in Argentina where ancient people painted hand silhouettes about 9000 years ago.|
|Iris Agate is a finely-banded agate that can produce a rainbow of colors caused by a diffraction grating effect.|
|A New Use for Helium: This rare natural gas byproduct will now be used to make millions of high performance hard drives.|
||Utica Shale: Drilling in Ohio confirms the Utica as a major source of oil, natural gas and natural gas liquids.|
|Ametrine is a bicolor quartz and a gemstone of growing popularity. It is produced commercially from just one mine in the world.|
||Mount Etna, the highest and most active volcano in Europe, continues an eruption that started in 2001.|
|Bear Attacks If you spend any time in bear country, knowing how to react to a bear encounter and attack could save your life.|
|Sand is an extremely diverse material. This gallery includes colorful photos of sand from many parts of the world.|
|The Eagle Ford Shale once attracted very little attention. Now it is one of the most prolific producers of oil and gas in the United States.|
|Oil from Space at Night: These night views of Earth from the Suomi satellite show oil field illumination and natural gas flaring.||
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|Homeowners Insurance usually does not cover damage caused by floods, landslides, earthquakes and other geohazards.|
|Opals: Gem quality opal is one of the most spectacular gemstones. A single stone can flash with every color of the spectrum.|
|Gold: A survey of how gold has been an important metal for thousands of years. Learn about uses, prospecting, mining, more.|
|Custom Topo Maps & Images
|Geology Tools: Visit the Geology.com store for rock hammers, hand lenses, field books and other tools for the geologist.|