![](http://www.alamy.com/thumbs/6/EEA65F59-11B7-4F1A-93A3-19444851EA54/2WK3YR3.jpg)
Fragment of a flint nodule with a concentrically zoned pattern, Liesegang rings
Size: 5184px × 3456px
Photo credit: © Photochur / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: background, collecting, concentric-zonal, day, details, drawing, flint, fractured, geology, grey, mineralogy, nature, nodule, outdoor, petrography, rock, siliceous, stone, texture