This is a very detailed colour atlas for ore/opaque minerals (ore microscopy) with the main emphasis on name and synonyms, mineral group, chemical composition, information about major formation environment, optical data, reflection colour/shade comparison with 4 common/standard minerals of a similar colour or grey shade, up to 5 high-quality photos for each mineral with scale, and a short description of the pictures. A compilation from some of the prominent publications in the field of ore microscopy yielded a list of 431 minerals are included in this atlas.* Concise full-color pictorial reference for scientists and geologists* Explains how to describe and identify microscopic samples of minerals* Draws material from prominent literature yielding over 400 different minerals