099W0970 https://collections.naturalsciences.be/ssh-geology-archives-plone6/boreholes/descriptions/ocr-descriptions/099w/099w0970 https://collections.naturalsciences.be/ssh-geology-archives-plone6/@@site-logo/logo-rbins.jpg 099W0970 PL.FLOBECQ 99W E.DELVAUX 970 (V) Même observation. très rares cailloux.
