File:Pyrite concretion (Chattanooga Shale, Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 1 (42300453012).jpg
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![File:Pyrite concretion (Chattanooga Shale, Upper Devonian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 1 (42300453012).jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Pyrite_concretion_%28Chattanooga_Shale%2C_Upper_Devonian%3B_Burkesville_West_Rt._90_roadcut%2C_Kentucky%2C_USA%29_1_%2842300453012%29.jpg/800px-Pyrite_concretion_%28Chattanooga_Shale%2C_Upper_Devonian%3B_Burkesville_West_Rt._90_roadcut%2C_Kentucky%2C_USA%29_1_%2842300453012%29.jpg)
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Original file (4,000 × 3,000 pixels, file size: 5.18 MB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:08, 7 December 2019 | ![]() | 4,000 × 3,000 (5.18 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
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