By: shelley-jaye
Image: Credit: Robin Rohrback, Mid-Atlantic Geo-Image Collection (M.A.G.I.C.) on GigaPan. CC BY Attribution 3.0 ⧉
License: Creative Commons Attribution ⧉

Uploaded: 7 Jan 2020
Last Updated: 7 Jan 2020

1.51 gigapixels
45,664 x 33,032 pixels
152.2 in X 110.1 in at 300dpi

Banded iron formation. The greyish color is the iron oxide mineral, hematite, the red is the sedimentary rock, chert (red=jasper), and the gold is tiger's eye. Sample is 26 cm across at its widest point, and was contributed by Dr. Jay Kaufman of University of Maryland.