Sample preparation
Our research mainly focus on provenance, diagenesis, weathering, geochemistry and geochronology of siliciclastic sediments and sedimentary rocks. The preparation of grain-size and heavy mineral fractions is a crucial issue in these studies. Significant efforts were done to improve the quality and effectivity of mineral separation.
We have a complete sample preparation line including (1) coarse crushing, (2) agate milling for geochemistry, (3) grain size separation by sieves, centrifuge and Atterberg method, (4) hydrodynamic gravity separation, (5) heavy liquid separation, (6) magnetic separation.
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| The agate-inlayed device is used to pulverize small amount rock samples for geochemical analyses and for clay mineralogy / illite crystallinity. | The steel or agate-inlayed device contains 4 mills, thus it is suitable to pulverize high number of samples. | The steel or agate-inlayed device pulverizes medium size samples for chemical analysis. |
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| Complete grain-size separation laboratory with several devices and sets of sieves. | Shaking table (run by Dr. Klaus Wemmer, Isotope Geology Dept.) | Density separation by Na-polytungstate and LST (fastfloat heavy liquid). |