Geology Field Guide

Photograph a rock, mineral or outcrop and receive a ranked list of likely types, each with traits to verify by eye and hand. Add photos of the other sides. Run the field tests that matter: scratch hardness, streak, magnet response, acid fizz, luster and break pattern. Every result reorders the candidates on the device against a built in ledger of common minerals and rocks. GPS pins record where each sample was found. Drill mode shows an unknown specimen, and you name it after running your own tests. Practice samples come from the ledger or from finds you confirmed earlier. Collection, notes and map pins stay on the device.