Abstract: The article describes the experience of usage of new mobile map platform «CarryMap» in preparation for the detailed geostructural mapping and geochemical study of the Olon-Obod gold ore cluster (Southern Mongolia). The authors accumulated all types of geological information into a single ArcGIS project. The project contains raster maps, vector maps, and digital geological information. We converted this project in CMF2 and placed on mobile iOS & Android devices.