This is the third edition; the first in 1961 was titled Gemstones and Minerals: How and Where to Find Them, the second in 1970 was titled Prospecting for Gemstones and Minerals, and this third edition is perhaps the most appropriately titled; all editions are very similar with minor changes, and all are excellent.
This clearly written how-to book is written for the layman, with very descriptive text accompanied by diagrams and pictures. Not a guide to localities, nor a descriptive mineralogy (see the author's excellent mineralogy text for that); this tells HOW to collect minerals. Chapters cover field trips, tools and how to use them, rock classes and how to recognize them, how mineral deposits form, field features of mineral deposits (pegmatites, sulfide veins, basalt and diabase sills, alpine vugs, etc.), collecting practices, preparation of specimens (cleaning, trimming, and preservation), storage and exhibit (labelling, cataloging, assembling and arrangement), with useful appendices, bibliography, and index.
I bought an edition years ago and soon found it very useful, particularly the section on Tools and How to Use Them. For field collecting, this book shows you how. -DMM