"The authors are to be congratulated and thanked for their tremendous accomplishment in rendering an enormous mass of published information into a comprhensive and comprehensible form. For anyone engaged in the study of rock-forming minerals or the origin and stability of rocks this volume is absolutley necessary."
Smithsonian Institute

A second edition, in two parts, of Volume 2 of this well-known reference series. This volume deals mainly with the pyroxene minerals, but also with pyroxenoids, sapphirine and aenigmatite. The double-chain silicates are covered in Volume 2B.