All images are the original work of Hannes Grobe/AWI.

The images in this directory are licensed according to the Creative Commons
CC BY 3.0 license: https://creativecommons.org/licenses/by/3.0/

sample_0001.png
    https://commons.wikimedia.org/wiki/Category:Scanning_electron_microscopic_images_of_minerals#/media/File:Arnager-kalk-bornholm_01_hg.jpg

sample_0002.png
    https://commons.wikimedia.org/wiki/Category:Scanning_electron_microscopic_images_of_minerals#/media/File:Arnager-kalk-bornholm_03_hg.jpg