An introduction to metalliferous ore deposits, including the use of reflected light microscopy for identifying ore minerals. Mineral deposits formed in a wide variety of geological environments are introduced, emphasising their relationship to petrological processes and geological settings. The importance of rock associations will be emphasised. There are 10, 4-hour sessions, consisting usually of 1-hour lecture, break and 3-hours' practical. Practical sessions will be concerned with the examination and interpretation of materials discussed in the corresponding lectures.