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

Uploaded: 11 Mar 2020
Last Updated: 22 May 2020

334 megapixels
21,836 x 15,308 pixels
72.8 in X 51.0 in at 300dpi
3,735 pixels per inch

Porphyritic andesite of probable Eocene age, northern Crazy Mountains, Montana. Blog posts relevant to this rock: http://www.nvcc.edu/home/cbentley/geoblog/2009/08/those-mountains-are-crazy.html and http://blogs.agu.org/mountainbeltway/2011/03/09/a-portrait-of-the-feldspar-as-a-young-mineral/