It would be great if a separate tab was dedicated to the various resources, general whereabouts on each map and the many uses of what you can find. Could show a picture of the raw resource before harvest and the best tools to use to get that resource.
An example would be Obsidian. That entry can show an obsidian rock, harvested by a pick, it can list any recipe that needs obsidian (polymer, scissors, ex.) then at the bottom show the maps with areas circled or shaded that have a high concentration of obsidian.