EGS relevant review of ore-body structures

Three types of target orebodies have been identified earlier in this proposal and described in Chapter 1. It is conceivable that Tasks 1.1 and 1.2 will lead to the identification of additional target types that could be relevant for a CHPM. Task1.3 will investigate the characteristics of deep ore bodies relevant to heat and metal extraction, including ore mineralogy, texture, geochemical conditions, thermal properties, fluid and heat flow properties. Rock stresses and their impact on fracture formation will be investigated with the help of pressure dependent petrophysical models. EGS-relevant properties, such as fracture system, chemical composition, solubility of metallic minerals of the different types of orebodies and their suitability to geo-engineering techniques will be reviewed. In situations where representative samples are not available these will be obtained with the help of the partner geological surveys, or careful extrapolations will be made. The unique minerals collection of the University of Miskolc (dating back to 1735) and other project partners will also be utilised in this respect.