This advanced level text covers the range of microprobe techniques available for the analysis of geological samples, principally in research applications. Each chapter is designed to introduce each technique in a tutorial manner. Overviews of instrumentation, analytical practice and the range of applications allow the reader to make informed assessments as to whether the technique is relevant to the research problem in hand. Comparisons with competitive techniques and summaries of the principal advantages and limitations of each technique make this book a useful text for beginning and experienced researchers who are not familiar with the full gamut of microprobe techniques and also workers in allied fields, including ceramics, metallurgy and possibly environmental applications. This book should be of interest to graduate students in geology and researchers in the field, as well as those in ceramics and metallurgy.