In the book, data on geology, petrography of the rocks of the Khibiny massif, description of 70 mineral localities, as well as a brief historical report about industrial development of the massif are given. The main section of the book is devoted to the description of occurences, morphology and properties of 436 minerals found within the massif. In addition, brief information about 35 doubtful of insufficiently investigated minerals is given in a separate section at the end of the book. The book includes 722 original microprobe analyses and contains 592 original colour and SEM-BSE photos, and also 342 references.