"A fully updated and revised guide to the mineral-rich region of Montana. Describes the states best rockhounding sites and covers popular and commercial sites as well as numerous little-known areas"-- Provided by publisher."With this informative, fully updated and revised guide, you can explore the mineral-rich region of Montana. It describes the states best rockhounding sites and covers popular and commercial sites as well as numerous little-known areas. This handy guide also describes how to collect specimens, includes maps and directions to each site, and lists rockhound clubs around the state. This is truly a complete guide to popular collecting sites in Montana and source-book brimming with advice that can be of use to both the novice and the experienced rockhounder"-- Provided by publisher.