Scientists categorize rocks into three different groups depending on how the rock was formed. Humans have used rocks from all groups as tools and in construction for thousands of years. Readers will be amazed to learn how heat, pressure, magma, and even water bring minerals together to form these useful compounds in this elementary title.

Guide and source-book with advice on observing and collecting gems and minerals in Wyoming.

Basic Rockhounding and Prospecting is aimed at anyone who is interested in learning the basics of collecting rocks and minerals. It's the perfect companion title to the more advanced Modern Rockhounding and Prospecting Handbook. Readers will learn how to identify common rocks and minerals, and where to look for them. Using labs, procedures, pictorials, and discussions to help readers learn, this book will cover the basics of geology, describing the...

"... A field guide to more than 130 of the most common and sought-after rocks, gems, and minerals hidden throughout the Rocky Mountain states"--From publisher description.

This is a fabulous photographic guide to the world of rocks and minerals, as well as how to build your own collection. Expertly written text describes the impact of factors such as time, weather and water erosion on the development of these substances, and the part played by natural phenomena such as volcanoes and earthquakes. Specimens are grouped according to their chemical composition and characteristics, and all entries include quick-reference...