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  1. Canada, Quebec, Mount St-Bruno Conservation Park. White birch root bark patterns
  2. Ocean Jasper from Madagascar
  3. Lake Amadeus - USGS Earth as Art
  4. Sandstone boulders in Goblin Valley, Arches National Park, Utah
  5. Contour Crystals IV
  6. New Jersey - USGS State Mosaic
  7. Icelandic Tiger - USGS Earth as Art
  8. Connecticut - USGS State Mosaic
  9. Marble
  10. Ocean Jasper from Madagascar
  11. Colorful Petrified Dinosaur Bone
  12. Desolation Canyon - USGS Earth as Art
  13. Greenland Coast - USGS Earth as Art
  14. Poppy Jasper
  15. State Posters - Arkansas State Mineral: Quartz
  16. Earth Pyramids, Italy
  17. Ocean Jasper from Madagascar
  18. Vermont - USGS State Mosaic
  19. Closeup of granite
  20. Jasper Slab
  21. Blue Sodalite
  22. Whirlpool in the Air - USGS Earth as Art
  23. Ocean Jasper from Madagascar
  24. Iowa - USGS State Mosaic
  25. Great Barrier Reef - USGS Earth as Art
  26. Dinosaur Petrified Bone
  27. Algerian Abstract - USGS Earth as Art
  28. New York - USGS State Mosaic
  29. Mineralogie II
  30. Nevada - USGS State Mosaic
  31. Petrified Wood close-up
  32. Mount Elgon - USGS Earth as Art
  33. Sandstone Formations On The Banks Of The Missouri
  34. Ice Waves - USGS Earth as Art
  35. Petrified Wood close-up
  36. Onyx
  37. Dinosaur Petrified Bone
  38. Shattuckite Vulture Mountain Arizona
  39. Mississippi - USGS State Mosaic
  40. Dinosaur Petrified Bone
  41. Australian Green Opalite
  42. Whirlpool Cloud - USGS Earth as Art
  43. Malachite
  44. Petrified Wood close-up
  45. Petrified Wood close-up
  46. Ice Stars - USGS Earth as Art
  47. Akpatok Island - USGS Earth as Art
  48. Coahuila, Mexico - USGS Earth as Art