TEXAS ROCKS & FOSSILS

2 11. TEXAS ROCKS . 1 10. 3 4. & FOSSILS . 6 8 9 12. 13. 5. 7. 17 18. 19. 21. 14 15 16 22. 20. 31. 24. 25 26 27 29. 32. 23. 30. 28. 42 43. 33 34 35 36. 38. 40 41. 44. 46. 37 45. 47. 48. 39 51 53. 49 50. 56. 54. 55. 57 52. 58. 64 65 59 60 61 62. 63. 66. 67. 80. 70 71 73 68 69. 74 76. 72. 77 78 79. 75. 1. Abundant in many TEXAS localities, fossil seashells are found in a 14. Cretaceous marine FOSSILS from a cave along the Colorado River 30. A nodule of banded blue agate from near Alpine in West TEXAS . 43. Llanite is a type of TEXAS pink granite found nowhere else in the 58. Soapstone, a combination of talc and other minerals, is soft and 72. Specimen of natural pink granite from Burnet County. Also see variety of settings, from blackland prairies to rocky hillsides. Indi- in Travis County. The county is bisected by a major geological Similar specimens are not uncommon throughout much of the world.

Technically, jasper is an impure cryptocrystalline variety of quartz related to agate, chert and flint. For laymen, a fundamental differ-ence is that jasper is virtually opaque while agate is translucent to nearly transparent. West Texas and the length of the Rio Grande. 42. Graphite ore in schist rocks. As are diamonds, graphite is pure

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  Opaque, Quartz

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