Mineral, Mineral or Mineral? by Fred Piscop

Across 1. Agronomist's study 5. Muscle twitch 10. Classic Pontiacs 14. Heche or Rice 15. Nation on Hispaniola 16. Saint Philip __ (Renaissance priest) 17. Hoops star/mineral expert? 19. QED middle 20. Tent securer 21. Don, as a pair of pants 23. "You __ dog, you!" 26. Many-time presidential hopeful Harold 27. "Cheers" perch 32. "__ longa, vita brevis" 33. Bryce Canyon state 34. Economist Smith 36. Fur merchant John Jacob 40. Latvia's capital 41. Our biggest bone 43. Luminous ring 44. Inventor Nikola 46. Goof off 47. City in 33-Across 48. Silly Putty holder 50. Shoes in the machinery, say 52. Put-down artists 56. __ Kan (pet foods name) 57. Jazz sax great John 59. Like some eclipses 64. Scrabble piece 65. How some minerals may be taken? 68. Where the Gobi is 69. Dry run 70. Privy to 71. Search for 72. Religious offshoots 73. Get bombed

Down 1. __ Club (merchandising chain) 2. "Don't bet __!" 3. Early Peruvian 4. Security lapse 5. HBO alternative 6. Links standard 7. Lends a hand to 8. Baseball card tidbits 9. Former Secretary of Transportation Norman 10. Mineralogist's words of praise on the golf course? 11. Gulls' relatives 12. Emulate Bryan 13. Suppress 18. Perform in the king's court, say 22. Army chutist, briefly 24. Goof off 25. Alpine song 27. Reynolds or Young 28. Play to __ (draw) 29. Joplin tunes 30. Mineral butcher-shop purchase? 31. Tibetan monks 35. Elevator music 37. The O'Hara home 38. Cassini of fashion 39. Seven Hills spot 42. Country's McEntire 45. Antiquing agent 49. Skin transplants 51. __ podrida 52. Assume the role of 53. Gem State capital 54. Kate's sitcom friend 55. Napper's noise 58. Idle or Ambler 60. Foot or pound 61. El __ (weather phenomenon) 62. On the crest of 63. Lacoste of tennis 66. Gangster's gun 67. "Kidnapped" monogram Copyright © MacNamara's Band, Inc.