Mineralogy is the science that deals with minerals, their structure and chemistry, the processes and environment of their formation. This science is closely integrated with crystallography, petrology, geochemistry and mineral deposits. In keeping with this, the Mineralogical Association of Canada (MAC) was formed in 1955 as a non-profit scientific organization to promote and advance the knowledge of mineralogy and the allied disciplines of crystallography, petrology, geochemistry and mineral deposits. Through its annual meetings, short courses, publications and sponsored symposia, the Association provides a forum for the presentation and dissemination of current knowledge and advances to world-wide community of earth scientists. Ever since its inception, MAC has given special attention to mineral deposits geology, particularly in organizing symposia, short courses and publishing special volumes and short-course notes on the subject.