Fans of needle-like crystals radiating from the bottom of a nodule of anhydrite. From a Cretaceous core of an oil reservoir.
Showing posts with label botryoids. Show all posts
Showing posts with label botryoids. Show all posts
Wednesday, August 10, 2016
More geology
Fans of needle-like crystals radiating from the bottom of a nodule of anhydrite. From a Cretaceous core of an oil reservoir.
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