Rock Tumblers Step-by-step guide to tumble-polishing rocks into gemstones.
Sand is a diverse material. This gallery includes photos of sand from around the world.
Difficult Rocks Elementary students find lots of rocks that you will not be able to identify.
Carbonatite Lava Flows at Oldoinyo Lengai CO2-rich lavas that flow like motor oil.
Sliding Rocks on Racetrack Playa How they slide across a dry lake bed is a mystery.
Rock Kits Get a collection of sedimentary, metamorphic and igneous rocks.
Shale The rock that is quickly transforming the energy industry.
Soapstone is a talc-rich rock with properties that make it suitable for a variety of projects.
A Grain of Sand Gallery of sand grains through a microscope by Dr. Gary Greenberg.
||Rocks on Mars
Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.
Mineral Show Photos From the 2010 Tucson Gem, Mineral & Fossil Show.
||Uses of Granite
Uses of Granite The rock used everywhere from the kitchen to the facing stone of skyscrapers.
|Coal Close Up
Coal Through a Microscope Coal is more than a black rock. It\'s THE most interesting rock.
Rock Art People have been producing rock art for thousands of years. A world-wide collection.
Spectacular Yosemite Rockfall A photo sequence of rockfall and debris avalanche by Herb Dunn.
Limestone A versatile rock used in cement, food, paint, paper, drugs, concrete & more!
Forensic Geology My students come to class thinking that dirt is dirt and sand is sand...