Digitization of the multi-compositional Storkwitz carbonatite diatreme (Delitzsch Complex, Germany)

<p> </p><p>The Storkwitz diatreme is a multiphase composite body within the Late Cretaceous Delitzsch Complex in north-western Saxony, Germany. The lithology of the Delitzsch Complex varies from rauhaugite and fenite aureole to ultramafic and alkaline lamprophyric intrusions (dykes, sills and pipe-shaped bodies) accompanied by the formation of diatremes of variable composition (Krüger et al., 2013; Röllig et al., 1990). The final stages are represented by beforsite and alvikite dykes (Röllig et al., 1990). The multi-component nature of the Storkwitz diatreme can be attributed to the formation of polymict breccias and numerous injections of compositionally varied carbonatites (Gevorgyan et al., 2020; Seifert et al., 2000).  </p><p>The entire area was extensively explored through an intensive drilling campaign by the <em>SDAG Wismut</em> between 1972 and 1989, due to a locally increased REE content. For a better understanding of the development of the diatreme, detailed petrographical observations and new imaging methods on extensive drill core material were applied. The combination of microscopic images and high-resolution 2D-images allows to create 3D-models of drill core sections via photogrammetry. Identifying the components (xenoliths and intraclasts) and analyzing the pattern of their distribution in the 3D-models of drill cores will enable obtaining textural information of the minerals within the rocks.</p><p>Further investigations using Hyperspectral Imaging (HIS) for chemical information, to be carried out in cooperation with the <em>Institute for Mine Surveying and Geodesy, TU Bergakademie Freiberg</em>, combined with mineralogical information and 3D-models, will provide new insights into the shape and geometry of the diatreme body.</p><p> </p><p><strong>References</strong></p><p>Gevorgyan, H., Schmidt, S., Kogan, I., Lapp, M., 2020. EGU2020-10678.</p><p>Krüger, J.C., Romer, R.L., Kämpf, H., 2013. Chemical Geology, 353, 140-150.</p><p>Röllig, G., Viehweg, M., Reuter, N., 1990. Zeitschrift für Angewandte Geologie, 36, 49-54.</p><p>Seifert, W., Kämpf, H., Wasternack, J., 2000. Lithos, 53, 81-100.</p>