Home » Rocks. Rocks: Igneous, Metamorphic and Sedimentary Rocks hold the history of the earth and the materials that will be used to build its future.

Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.

An identification and reference guide to over 350 minerals, rocks, and gems. This book is a 4 1/2" x 7 5/8" paperback with 254 pages, and there are multiple color photos on practically every …

If you are a teacher or a geologist visiting a classroom, don't be surprised if students bring in some very interesting rocks for you to identify. Being prepared for the experience can be …

Some rocks contain carbonate minerals, and the acid test can be used to help identify them. Limestone is composed almost entirely of calcite and will produce a vigorous fizz with a drop …

What Are Rock-Forming Minerals? Scientists have identified over 4,000 different minerals. A small group of these minerals make up almost 90% of the rocks of Earth’s crust. These minerals are …

Fluorescent lamps can be used in underground mines to identify and trace ore-bearing rocks. They have also been used on picking lines to quickly spot valuable pieces of ore and separate …

Get a rock, mineral or fossil kit to teach your students about earth materials and how to identify them. We offer ten different kits in various sizes. Photos of Common Rock Types

Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include: andesite, …

Rocks: Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Minerals: Information about ore minerals, gem materials and rock-forming minerals. …