Sensor device and method for the geoelectrical prospecting of raw mineral deposits

The invention relates to a sensor device and a method for the geoelectrical prospecting of the location, the (stratographic) arrangement, and the course of raw mineral deposits and of the adjoining rock delimiting these deposits, particularly in the continuous working of the mineral deposits, having a sensor head (51) whose front surface forms the sensor measuring surface (53), and at least one electrode. According to the invention, the sensor head (51) can make contact with a ground surface, and a central electrode (54) and a plurality of outer electrodes (55) distributed geometrically uniformly around the central electrode (54) are arranged on the sensor measuring surface (53), the central electrode (54) and the outer electrodes (55) being electrically conductive and electrically separated from one another.