Mining and quarrying are very destructive industries to the environment. They have a direct impact on the countryside by leaving tons of waste material, which are not used. In fact, in 2020 we are reaching a primary raw material shortage, many slate quarries have been closed in Europe. With project Geo Slate Studio Mixtura is aiming to bring alternative and rethink the usage of waste streams from the stone quarries and create valuable sustainable material with great aesthetics from mineral residues. Annually slate stone waste streams compose 600.000 tones per quarry. Together with partners TU Delft, Lei Import and Concr3de, Studio Mixtura is exploring different contemporary prototyping techniques to show the potential of the new material and modular facade tile system, which can be used in design and architecture.