
            
            By: magic-gigapans
            
              Image: Callan Bentley, Mid-Atlantic Geo-Image Collection
                
            
            
              License:
                 Creative Commons Non Commercial ⧉
              
            
          
            Uploaded: 6 May 2020
            Last Updated: 7 Oct 2020
          
              194 megapixels
            21,728 x 8,936 pixels
            72.4 in X 29.8 in at 300dpi
            
              5,478 pixels per inch
          
Muscovite schist (metamorphosed Harpers Formation?) from Throroughfare Gap / Bull Run Mountain, Virginia, bearing euhedral porphyroblasts of magnetite.