By: magic-gigapans
Image: Robin Rohrback, Mid-Atlantic Geo-Image Collection
License: Creative Commons Non Commercial ⧉

Uploaded: 3 Apr 2020
Last Updated: 29 May 2020

415 megapixels
22,721 x 18,280 pixels
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Precambrian-aged amygdaloidal basalt collected near Castle Danger, MN. The amygdules are comprised of clinochlore and the zeolite mineral laumontite. Click here to explore some amygdules liberated from this sample: https://viewer.gigamacro.com/view/fkPldtPJDXdoQ4iK Click here to explore a thin section from this sample in plane polars: https://viewer.gigamacro.com/view/W0vNcW2kdwm6vDtF Click here to explore a thin section from this sample in crossed polars: https://viewer.gigamacro.com/view/oryPfmHyMDsKuvAt Sample contributed by Dr. Kenneth Rasmussen.