Mikroskopaufnahme dispers verteilter Vitrinite in einem Rotliegend-Sandstein Thüringens unter Auflicht und Ölimmersion. Links Collinit (homogen, strukturlos), rechts Telinit (mit deutlichen Zellstrukturen). Blassgelbe Körner in der Bildmitte stellen framboidalen Pyrit dar.

Vitrinite reflectance lab

Quantification of the degree of coalification and thermal maturity of sediments
Microscope image of dispersed vitrinites in a Rotliegend sandstone of Thuringia under reflected ...
Image: Kamil Ustaszewski
G. Löwe bei einer Messung der Vitrinitreflektanz am Auflichtmikroskop. Image: Kamil Ustaszewski

The determination of the reflectance of vitrinite (a specific component of terrestrial coals) with respect to certain standards is an established standard method for the quantification of the degree of coalification and thermal maturity of sediments. The measurements are carried out under reflected light microscopy under monochromatic light (546 nm) on polished sections of solid coal components. Our system consists of the coupling of a SpectraVision photomultiplier tube (A.S. & Co.) and a Zeiss Imager D1m microscope on a passive vibration-damped laboratory stage. Oil immersion objectives with 50x and 100x magnification allow the detection of particles of different sizes, including dispersed particles. A Zeiss Axiocam 105 color video camera allows the photographic documentation of the microscopic observations.

Contact: K. Ustaszewski (E-Mail)

Theses

  • Mareike Danigel, 2019: Rekonstruktion der Versenkungsgeschichte der Sächsischen Kreide auf Grundlage von Vitrinit- Reflektanzmessungen, 158 pp
  • Christian Wagner, 2016: Mikroanalytische Untersuchungen zur thermalen Reife eines eozänen Sedimentbeckens der Pyrenäen, MSc-Arbeit, Friedrich-Schiller-Universität Jena, 44 pp.
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