Abstract
A crystallography course, consisting of 24 lectures and 12 three-hour laboratory periods, is shown to cover the foundations of morphological as well as structural crystallography. It is meant to give the entering geology student the basic crystallographic understanding on which to build the solid knowledge of minerals without which no study of rocks is conceivable. Facing his overwhelming responsibility, the crystallography teacher in a geology department must select his topics with extreme care and strive to impart the know-why as well as the know-how. A realistic goal is to bring the student to a point where he can: morphologically, get all information from the external form (to be able to find the morphological space group of a euhedral crystal) and, structurally, understand how a crystal structure is built and how it can be solved by diffraction (to be able to build a crystal-structure model after studying a structure paper in the literature).
