What type of rock feature does a geologic map NOT typically show?

A geologic map primarily focuses on the spatial distribution and relationships of various rock units and their structural features, such as faults and folds. It visually represents the different types of geological formations present in a specific area, highlighting their locations, orientations, and relationships to one another.

While the map may provide some general information about rock types and their distribution, it typically does not include detailed information regarding the mineral composition of those rocks. This specific information usually requires more detailed studies and analyses, such as petrological examinations or mineralogical surveys, rather than what is conveyed on a geologic map itself. Thus, mineral composition is not a standard feature depicted on a geologic map, making the answer clear in the context of typical content found on such maps.