The Missouri Handbooks are intended to bring the products of extensive research to the general public in nontechnical yet scholarly terms and in a convenient paperback format.

From the spiky teeth of a geode containing sparkling quartz crystals, the rich browns and golds of smoky quartz and goethite needles on calcite, and the coral-like branches of plumose barite to the abstract reds and whites of polished agate cabochons, world-class mineral crystals are harvested from the rocks of the Hawkeye State. Collecting these high-quality crystals requires access to active mines, pits, and quarries, and individual collectors are rarely allowed entrance to these facilities. With information about each specimen’s type, source, size, and current location, Paul Garvin and Anthony Plaut’s Iowa Gems and Minerals in Your Pocket provides access to the glittering, gleaming world of Iowa crystals.

Most, if not all, of Iowa’s gems and minerals are products of crystallization in underground cavities that filled with water containing dissolved chemicals. The famed Iowa geodes (Iowa’s state rock) are products of a complex process of replacement and cavity-filling in the Warsaw Shale. Armored by a rind of tough chalcedonic quartz, these spheroidal masses, which range up to more than a meter across, weather out of the host rock and accumulate along streams in the southeastern part of the state. During the Pleistocene Epoch, large masses of glacial ice rafted the ultra-fine-grained variety of quartz called Lake Superior agates, which had previously weathered out of their host rocks, southward into Iowa. They can be found in the gravels that have accumulated along major streams in the eastern half of the state.

Iowa’s long record of mining lead, coal, gypsum, and limestone contains a rich history; the forty-seven mineral specimens inIowa Gems and Minerals in Your Pocketmake up a fascinating illustrated guide to that history. Carefully lit and photographed to reveal both maximum detail and maximum beauty, each specimen becomes a work of art.

Completely revised and expanded, this fourth edition covers the 986 minerals found in Arizona, showcased with breathtaking new color photographs throughout the book. The new edition includes more than 200 new species not reported in the third edition and previously unknown in Arizona.

Chapters in this fourth edition of Mineralogy of Arizona cover gemstones and lapidary materials, fluorescent minerals, and an impressive catalog of mineral species. The authors also discuss mineral districts, including information about the geology, mineralogy, and age of mineral occurrences throughout the state. The book includes detailed maps of each county, showing the boundaries and characteristics of the mineral districts present in the state.

Arizona’s rich mineral history is well illustrated by the more than 300 color photographs of minerals, gemstones, and fluorescent minerals that help the reader identify and understand the rich and diverse mineralogy of Arizona. Anyone interested in the mineralogy and geology of the state will find this the most up-to-date compilation of the minerals known to occur in Arizona.

Nevada has an extraordinary diversity of minerals, some of them unique to the state and some the focus of human exploitation for millennia. Minerals of Nevada is the first synoptic catalog of Nevada minerals, listing every mineral found in the state along with the places where they occur. The book includes the geologic history of the state, the history of mining in Nevada, descriptions of significant mineral deposits and mining districts, maps, and an album of striking color photographs of rare and important minerals.