
            
            By: magic-gigapans
            
              Image: Robin Rohrback, Mid-Atlantic Geo-Image Collection
                
            
            
              License:
                 Creative Commons Non Commercial ⧉
              
            
          
            Uploaded: 2 Apr 2020
            Last Updated: 29 May 2020
          
              425 megapixels
            23,328 x 18,236 pixels
            77.8 in X 60.8 in at 300dpi
            
          
Collected from the shore of Lake Superior near Castle Danger, MN, USA. Click here to explore another face of this cobble: https://viewer.gigamacro.com/view/H455UVo7BTHjKJ1k Click here to explore sub- to euhedral calcite in this cobble: https://viewer.gigamacro.com/view/Fdv18PV14JHTRXmW Click here to explore a thin section cut from this sample in plane polars: https://viewer.gigamacro.com/view/xXGqKDQZ711jJ6V6 Click here to explore a thin section cut from this sample in crossed polars: https://viewer.gigamacro.com/view/DZzrto6XxhlXSsWc Sample contributed by Dr. Kenneth Rasmussen.