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

Uploaded: 14 May 2020
Last Updated: 7 Jul 2020

930 megapixels
54,716 x 17,004 pixels
182.4 in X 56.7 in at 300dpi
5,454 pixels per inch

Collected in a quarry in West Virginia, along old route 55 in the valley of the Lost River, this block of limestone (measuring 18.5 cm by 4.9 cm) shows delicate branching black shapes resembling tree branches. These are dendrites of the mineral pyrolusite. They are completely inorganic, and are not fossils.