The Evolution of the Igneous Rocks, by N. L. Bowen, appeared in 1928 and had a profound influence on later generations of petrologists. Drawing on his series of lectures at Princeton University in the spring of 1927, Dr. Bowen identified, outlined, and applied the principles of physical chemistry relevant to petrological processes. Whereas the major petrochemical questions he discussed are still relevant today, the answers appear to change with time. The purpose of the present volume is to provide an updated view of those questions, in the light of almost fifty years of accumulated observations, using the principles Bowen set forth. Originally published in 1979. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Your beachcombing guide to California, Oregon, and Washington Keep this tabbed booklet close at hand on your next rock-hunting adventure. Based on Dan R. Lynch’s best-selling field guides and featuring the most common and desirable agates and other collectibles along the Pacific Coast, the booklet is organized by rocks/minerals and then by general appearance for quick and easy identification. With six varieties of agates, as well as popular finds like Jasper, Quartz, and even Jade, this handy guide has the information you want. Narrow your choices by appearance, and view photos of just a few specimens at a time. The easy-to-use format means you’ll quickly find what you need to know. Plus, the quick guide is much easier to use than laminated foldouts, and the tear-resistant pages help to make the book durable in the field.

Among rock-forming minerals, the zeolite group is large and widespread, and is enormously important to industry. Zeolites form excellent crystals. The group is structurally complex and notable for its ability to exchange cations with surrounding solutions. Numerous diagrams help visualize important structural features that define various framework types. Over 200 photographs of these beautiful minerals show each species in its geological context. After a brief introduction, the general treatment of the subject begins with an explanation of the structural chemistry and taxonomy of the group. A section on their formation and geochemistry explains the kinds of environments where zeolites are formed. Then, an entry for each mineral series provides locality information and full-color photos wherever possible so that collectors can see what good specimens look like and which minerals one might expect to find in association with them. An extensive bibliography is provided for readers who wish to learn more about particular topics.

This must-have guide for Michigan, Minnesota, Wisconsin, and Ontario features full-color photographs and information to help readers identify rocks and minerals. Get the perfect guide to rocks and minerals of the Lake Superior region! With the new edition of this famous guide by Bob Lynch and Dan R. Lynch, field identification is simple and informative. This book features comprehensive entries for 75 rocks and minerals, from common rocks to rare finds. That means you're more likely to identify what you've found. The authors know rocks and took their own full-color photographs to depict the detail needed for identification-no more guessing from line drawings. The entries are organized by area, so you can find rocks unique to each state or common to all three. The field guide's easy-to-use format helps you to quickly find what you need to know and where to look. Inside you'll find: 75 specimens of the Lake Superior region Quick Identification Guide: Identify rocks and minerals by color and common characteristics Range/occurrence maps to show where each specimen is commonly found Professional photos: Crisp, stunning images This second edition includes updated photographs, expanded information, and even more of the authors' expert insights. With this book in hand, identifying and collecting is fun and informative.

The Balmat Mining District in southern St. Lawrence County, New York, is a former mining site known among collectors for its highly prized minerals. For more than 100 years, it was one of the world's most important sources of talc and zinc. Because most of the zinc ore was crushed underground and brought to the surface for separation, only mineral specimens brought out by miners and geologists have survived. Outstanding specimens from both the talc and zinc mines, preserved in only a few collections, are featured in this book-many for the first time. Some of the fine specimens included are hexagonite, manganocummingtonite, groutite, calcite, sphalerite, and magnetite. With more than 200 photographs, this book is the first comprehensive description of the history, geology, and mineralogy of this important mining district.

Perfect for mountain climbers and hikers, this valuable reference covers more rocks and minerals in North America than any other available guide. 794 full-color photographs depict all the important rocks, gems, and minerals -- in many variations of color and crystal form -- and the natural environments in which they occur; written descriptions provide information on field marks, similar rocks and minerals, environment, areas of occurrence, and derivation of names. Includes a guide to mineral collecting and a list of rock-forming minerals

Gemstones are naturally beautiful, but you can make them glisten and shine. This beginner's guide covers all the techniques you need to know: tumbling, cutting, face polishing and more. It pertains to a wide range of popular gemstones, from agates to turquoise, and it provides information about recommended equipment and supplies. Plus, it introduces jewelry making with seven projects. By following the authors' simple approach, you'll create finished stones worthy of displaying, selling or making into jewelry.

In recent years, minerals and gems have enjoyed growing renown and popularity. At this time there are some 3,800 different minerals known from all parts of the world that have been deep in the earth for millions of years and grew there over thousands of years. Learn to identify the most important groups of minerals, including quartz, feldspar, beryl, tourmaline, corundum, diamond, garnet, spinel, fluorite, precious metals, and more. More than 150 photos with descriptions relate how minerals originate, are found, and what they signified in ancient times.