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Concretion & quartz veins in sandstone (Thunderhead Sandstone, Neoproterozoic; Clingmans Dome, Great Smoky Mountains, North Carolina, USA) 1.jpg - Jsj1771
Concretions & quartz vein in sandstone (Thunderhead Sandstone, Neoproterozoic; Clingmans Dome, Great Smoky Mountains, North Carolina, USA) 2.jpg - Jsj1771
Concretions & quartz vein in sandstone (Thunderhead Sandstone, Neoproterozoic; Clingmans Dome, Great Smoky Mountains, North Carolina, USA) 3.jpg - Jsj1771
Quartz veins in sandstone (Thunderhead Sandstone, Neoproterozoic; Clingmans Dome, Great Smoky Mountains, North Carolina, USA) 5 (36845258552).jpg - Ser Amantio di Nicolao
Quartz vein in phyllite (Anakeesta Formation, Neoproterozoic; Newfound Gap, Great Smoky Mountains, North Carolina, USA) 1 (36634370050).jpg - Ser Amantio di Nicolao
Quartz vein in phyllite (Anakeesta Formation, Neoproterozoic; Newfound Gap, Great Smoky Mountains, North Carolina, USA) 3 (36890118091).jpg - Ser Amantio di Nicolao
Quartz vein in phyllite (Anakeesta Formation, Neoproterozoic; Newfound Gap, Great Smoky Mountains, North Carolina, USA) 4 (36634343700).jpg - Ser Amantio di Nicolao
Quartz vein in phyllite (Anakeesta Formation, Neoproterozoic; Newfound Gap, Great Smoky Mountains, North Carolina, USA) 5 (36842755306).jpg - Ser Amantio di Nicolao
Quartz vein in phyllite (Anakeesta Formation, Neoproterozoic; Newfound Gap, Great Smoky Mountains, North Carolina, USA) 6 (36195653664).jpg - Ser Amantio di Nicolao
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