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The rocks that cover Earth's surface wouldn't exist without crystals.

Minerals are the building blocks of rocks. Formed without any human assistance, these natural substances are used in almost everything people use on a daily basis.

An introduction to rocks that discusses what they are made of, different types and how they are formed, the rock cycle, how they are used by people, and mining.

Gives information on rocks, volcanoes, fossils, and soils.

Describes the characteristics of minerals; explains how minerals make up igneous, sedimentary, and metamorphic rock; introduces several kinds of gems during a visit to a lapidary shop; and presents a hands-on demonstration of how crystals can be made from liquids.

When a young boy finds a rock that had floated through space and landed on Earth millions of years earlier, he writes a letter to NASA asking them to return it to the heavens.

A comprehensive, illustrated guide to over seven hundred minerals, rocks, and fossils found around the world, explaining how to determine classification, date, and identification.

This program presents an overview and a visual encyclopedia of rocks and minerals.

Explains basic concepts about rocks and soils, describes their composition and formation, and suggests activities and experiments to reinforce this information.

Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on the characteristics and formation of different types of rocks; features a visit to the Obsidian Dome rock formation at Mammother Mountain in California; and includes a demonstration of how particles of sediment settle.

A comprehensive guide to the natural riches of the earth - minerals, rocks, and precious stones.

An introductory geology text filled with photos and descriptions of various types of rocks and earth processes.

Detailed full-color spreads help beginning naturalists observe and understand over 150 types of rocks and minerals.