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

Uploaded: 30 Apr 2020
Last Updated: 20 Jul 2020

63 megapixels
7,975 x 7,882 pixels
26.6 in X 26.3 in at 300dpi

Rutile needles exsolved on the surface of a biotite grain from the Devonian-aged Tioga bentonite exposed in Seven Fountains, VA. Sample provided by Dr. Dan Doctor, US Geological Survey.