In order to dissolve minerals from its compound that are suitable for radiometric dating and to get rid of their adhesions in the best possible way, the stone is ground several times with the jaw crusher and the roller mill. The minerals suitable for the chosen dating methodology are separated using density differences, magnetic properties and grain shape. Subsequently, the millbase is sieved; the finer grain fraction is of interest for further processing.
The Wilfley wet-shaking hearth …

Sample preparation instruments are available for all kinds of samples for scanning electron microscopes: Gold-Palladium Sputter Coater - Leica; Carbon Coater - Leica; Cryo Sample Preparation - Leica; Gatan Model 656 Dimple Grinder - a precision tool used to mechanically produce dimples in the surface of materials like ceramics, semiconductors and metals; Gatan Model Duo Mill 600 - a post-ion milling device used to prepare electron transparent specimens for transmission electron microscopy; …

The section is well equipped for rock crushing, sieving and milling, preparation of thin and polished sections and grain mounts, and mineral separation by gravimetric and magnetic methods. We maintain central facilities and equipment for cleaning, crushing, sieving and grinding rock samples, both for preparation of homogenized whole rock powders and for the production of mineral separates. Whole rock powders (grain sizes < 62 μm) are typically used for X-Ray diffraction (XRD), X-Ray …