'This text by Tossell and Vaughan is outstanding and timely. This book provides the first major introduction and review of such advanced geochemical methods and shows how they can be applied to mineralogy. For anybody interested in the way in which geochemistry will evolve in the 21st century, this book is essential reading. The authors are to be congratulated in producing a first-class contribution to literature.'R.J. Price, Mineralogical Society, September 1993