This major revision takes place 40 years after publication of the first edition, and deals with feldspathoids, silica minerals and zeolites. The text has been completely re-written and very much expanded, incorporating the advances in knowledge and understanding arising from the new and improved techniques for the study of minerals that have developed.

Each chapter is headed by a brief tabulation of mineral data and sketches showing optical orientation, and ends with full references. Diagrams of crystal structures are presented and followed by discussion of the structural features, making use of data from various spectroscopic as well as diffraction methods. The chemical sections include many analyses from which structural formulae have been calculated.

This book is a standard reference work for professionals in mineralogy, petrology and geochemistry, as well as having appeal as a reference work for postgraduate research students and research workers in these and related fields.