This paper introduces a new down-plunge projection method that allows geologists to rapidly determine the first-order structural geometries of mineral deposits. The method assumes that the mineralised bodies under analysis resulted when hydrothermal fluids flowed through highly permeable zones that were formed from deformation. Therefore, the grade patterns should mimic the significant structures that controlled the fluid flow. Once these structural geometries are determined, the patterns can be used to simplify, speed up, and substantially increase the accuracy of the geological modelling processes of both explicit and implicit methods of modelling.