Tumbled Stones are rocks that have been rounded, smoothed and polished in a rock tumbler.
Quartzite a nonfoliated metamorphic rock composed almost entirely of quartz.
Siltstone is a sedimentary rock composed mainly of silt-sized particles.
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Rock Kits Get a collection of sedimentary, metamorphic and igneous rocks.
Difficult Rocks Elementary students find lots of rocks that you will not be able to identify.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
|The Brewery Rock ?
The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
Trap Rock is a name applied to any dark-colored igneous rock used to produce crushed stone.
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Sliding Rocks on Racetrack Playa How they slide across a dry lake bed is a mystery.
A Grain of Sand Gallery of sand grains through a microscope by Dr. Gary Greenberg.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Shale The rock that is quickly transforming the energy industry.
Mineral Show Photos From the 2010 Tucson Gem, Mineral & Fossil Show.
Unakite is a metamorphosed granite composed of green epidote and pink orthoclase.
Sand is a diverse material. This gallery includes photos of sand from around the world.
The Richest Meteorite Field - More meteorites found here than anywhere else on Earth.
||Uses of Granite
Uses of Granite The rock used everywhere from the kitchen to the facing stone of skyscrapers.
Crushed Stone - Four tons per person is used each year in the United States.
Soapstone is a talc-rich rock with properties that make it suitable for a variety of projects.
Rock Art People have been producing rock art for thousands of years. A world-wide collection.
||Rocks on Mars
Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.
Forensic Geology My students come to class thinking that dirt is dirt and sand is sand...
Limestone A versatile rock used in cement, food, paint, paper, drugs, concrete & more!
Carbonatite Lava Flows at Oldoinyo Lengai CO2-rich lavas that flow like motor oil.
||Coal Close Up
Coal Through a Microscope Coal is more than a black rock. It\'s THE most interesting rock.
|Azurite Granite ?
Azurite Granite? Found at the base of K2, the second highest mountain in the world.
What Are Pictographs? They are drawings or paintings on rocks made by people.
Spectacular Yosemite Rockfall A photo sequence of rockfall and debris avalanche by Herb Dunn.