| 2445
| Oakenfull, J. C.
| 1912
| Brazil in 1912: London England, p. 304.
|
| 2446
| Oakley, P.
| 1974
| An opal prospecting tour through Australia: Lapidary Journal, v. 28, no. 5, p. 778-789.
|
| 2447
| Oakley, S. A.
| 1979
| Private collection with a professional touch: Lapidary Journal, v. 33, no. 5, p. 1084-1089. Color pix: Hampton Butte Wood, Schwartz Canyon Oak, Hauser Creek, Utah, Rhexoxylon
|
| 2448
| Obenauer, K.
| 1974
| Uber Achat vom Uruguay-Typ im Oberen Budtsandstein des Nordschwarzwaldes: Aufschluss, v. 25, p. 110-116.
|
| 2449
| Obenauer, K.
| 1979
| Uber den Aufbau des Buntsandstein - Carneols und seiner Achatdrusen: Aufschlukss, v. 30, p. 113-119.
|
| 2450
| O'Brien, G. J.
| 1965
| Rock Hunting in Tasmania: Lapidary Journal, v. 19, no. 7, p. 822-823.
|
| 2451
| Odle, H.
| 1948
| What about Montana Agates: Lapidary Journal, v. 2, no. 2, p. 78, 79.
|
| 2452
| O'Donoghue, M.
| 1974
| Agate staining in the early part of the century: Journal of Gemmology, v. XIV, p. 114.
|
| 2453
| O'Donoghue, M.
| 1987
| Quartz: Butterworth's Gem Books, London, Boston, Durban, Singapore, Sydney, Toronto, Wellington. 110 pp.
|
| 2454
| Oehler, J. H.
| 1976
| Hydrothermal crystallization of Silica Gel: Geological Society of America, Bulletin, v. 87, no. 10, p. 1143-1152.
|
| 2455
| Oglesbee, H. E.
| 1978
| Petrified palm root on the Mojave Desert: Gems and Minerals, no. 494, p. 54-55. California, field trip.
|
| 2456
| Oglesbee, H. E.
| 1979
| Observations of a rockhound: Lapidary Journal, v. 32, no. 12, p. 2590-2592. Calico Mts, CA
|
| 2457
| Oglesbee, H. E.
| 1980
| Black Canyon Agates and Jaspers: Lapidary Journal, v. 34, no. 8, p. 1848-1850. About 50 miles northwest of Barstow, California, Black Mountain, Opal Mountain; jasper, tan and brown, or agate, with lavender centers.
|
| 2458
| Okamura, R. T., and J. C. Forbes
| 1961
| Occurrence of silicified wood in Hawaii: American Journal of Science, no. 259, p. 229-230.
|
| 2459
| O'Keefe, M., and Hyde, B. G.
| 1978
| On Si -O-Si configurations in silicates: Acta Crystallographica, section B, v. 34, p. 27-32.
|
| 2460
| Okomoto, G., Okura, T., and Goto, K.
| 1957
| Properties of silica in water: Geochimica et Cosmochimica Acta, v. 12, p. 123-132.
|
| 2461
| Oldershaw, A. E.
| 1968
| Electron-microscopic examination of Namurian bedded cherts, North Wales (Great Britain): Sedimentology, v. 10, no. 4, p. 255-272.
|
| 2462
| O'Leary, B.
| 1977
| Opals of Indonesia: Lapidary Journal, v. 23, no. 11, p. 2484, 2496-2500.
|
| 2463
| Oles, F.
| 1968
| Petrified wood in the Rattlesnake Hills: Gems and Minerals, no. 372, p. 28. Washington, field trip.
|
| 2464
| Oles, F.
| 1969
| Saddle Mountain picture wood: Gems and Minerals, no. 381, p. 26 - 27. Washington, field trip.
|
| 2465
| Oles, F.
| 1971
| Adna Agate: Gems and Minerals, no. 409, p. 24 - 25. Washington, field trip, Ceres Hill Road to locality.
|
| 2466
| Oles, F.
| 1972
| Orange agate and green jasper at Tillamook: Gems and Minerals, no. 413, p. 22. Oregon, field trip.
|
| 2467
| Oles, F.
| 1973
| Treasures at Tono: Gems and Minerals, no. 433, p. 28, 29. Washington, field trip.
|
| 2468
| Oles, F.
| 1980
| The Madras Pow-Wow: Gems and Minerals, no. 512, p. 9, 20-22.
|
| 2469
| Oles, F., and H. Oles
| 1967
| Eastern Gem Trails. A guide to gem and mineral collecting areas of central-eastern United States: Gembooks. Mentone, California. 80 pp.
|
| 2470
| Oles, F., and H. Oles
| 1968
| Precious opal in the Bitterroot Mountains: Gems and Minerals, no. 373, p. 28-29.
|
| 2471
| Oles, F., and H. Oles
| 1972
| Saddle Mountain picture wood: Gems and Minerals, no. 381, p. 26- 27. Washington.
|
| 2472
| Olesky, F.
| 1985
| Vacations for rockhounds: Gems and Minerals, no. 573, p. 26 - 27.
|
| 2473
| Oliver, L. A.
| 1979
| An agate TV lamp: Gems and Minerals, no. 504, p. 32-33.
|
| 2474
| Olson, B.
| 1938
| Gem minerals of the region about Orofino, Idaho: Rocks and Minerals, v. 13, no. 5, p. 148-149.
|
| 2475
| Oregon Agate and Mineral Society
| 1959
| Happy Rock-Hound Hunting Grounds in Oregon: (Map). Lapidary Journal, v. 13, no. 3, p. 406, 407. This may be same as map by J. R. Rodgers.
|
| 2476
| Ormerod, M. J., M.D.
| 1964
| Gemstones of Manitoba: Lapidary Journal, v.18, no. 6, p. 704.
|
| 2477
| Orr, P. C.
| 1940
| Fossil bone gems: The Mineralogist, v. 8, no. 3, p. 113.
|
| 2478
| Ortlam, D.
| 1966
| Fossile Boden und ihre Verwendung zur Gleiderung des hoheren Buntsandsteins im nordlichen Schwarzwald und sudlichen Odenwald: Jber. Mitt. oberrhein geol. Ver. N. F., v. 48, p. 69-78. (not seen)
|
| 2479
| Ortlam, D.
| 1967
| Fossil Boden als Leithorizonte fur die Gliederung des Hoheren Buntsandsteins im nordlichen Schwarzwald und sudlichen Odenwald: Jber. mitteilungen oberrhein geol. ver., N. F., 48, p. 69-78. (not seen).
|
| 2480
| Ortlam, D.
| 1969
| Palaoboden im hoheren Buntsandstein des mittleren Schwarzwaldes: Geologische Jahrbuch, v. 87, p. 61-88. (not seen).
|
| 2481
| Ortlam, D.
| 1970
| Die Randfazies des germanischen Buntsandsteins im sudlichen Schwarzwald: Geol-ogische Jahrbuch, v. 89, p. 135-168. (not seen).
|
| 2482
| Ortoleva, P.
| 1994
| Geochemical Self-Organization, 2nd edition. Oxford University Press, New York, Oxford, 411 p.
|
| 2483
| Ortoleva, P., Chen, Y., and Chen, W.
| 1995
| Agates, concretions and orbicules: Self organized zoning and morphology: In Kruhl, J. H., editor, Fractals and dynamic systems in Geoscience: Springer Verlag, Berlin, p. 283-305.
|
| 2484
| Osborne, D.
| 1912
| Engraved Gems: Signets, Talismans and Ornamental Intaglios, ancient and Modern: Henry Holt & Company, New York, 424 p.
|
| 2485
| Osborne, G. C.
| 1957
| Agates of southwestern Utah: Lapidary Journal, v. 11, no. 1, p. 38, 40, 42, 44, 46.
|
| 2486
| Osborne, H. F.
| 1902
| The fossil tree bridge in the Arizona petrified forest: Science, v. 16, p. 991.
|
| 2487
| Osborne, M. W.
| 1950
| Rock-hound Magic: New Mexico Magazine, v. 28, no. 3, p. 20 - 21.
|
| 2488
| Ossowski, E., and Ossowski, J.
| 1964
| Rock hunting on Woodward Ranch: Rocks and Minerals, v. 39, no. 1,2, p. 45-46. Texas, black plume, red plume, flower garden, and pink banded agate.
|
| 2489
| Ossowski, J.
| 1969
| Agua Fria Ranch: Gems and Minerals, no. 379, p. 18-20. Texas, field trip.
|
| 2490
| Ossowski, J.
| 1972
| Woodward Ranch, then and now: Gems and Minerals, no. 414, p. 22-25. Texas, field trip.
|
| 2491
| Ostrander, C. W., and Price, W. E.
| 1940
| Minerals of Maryland: The Natural History Society of Maryland, Baltimore, Maryland. 92 pp.
|
| 2492
| Osterwold, F. W., et al
| 1965
| Mineral Resources of Wyoming: Geological Survey of Wyoming, University of Wyoming, p. 139, 169
|
| 2493
| Oswald, W O.
| 1944
| Die Welt der vernachlassigten Dimensionen,12: Aufl. Dresden und Leipzig.
|
| 2494
| Otero, R. K.
| 1998
| Ric's Pics: Eclectic Lapidary, v. 2, no. 7, p. 1-2. Electronic publication. http://www.bovagems.com/scripts/eclectic/contents.cfm?RequestTimeout=600
|
| 2495
| Owen, D. D.
| 1850
| Report of a Geological Survey of Iowa, Minnesota, and Wisconsin, and incidentally of a portion of Nebraska Territory made under instructions from the United States Treasury Department: By David Dale Owen, 638 p.
|
| 2496
| Owens, G. W.
| 1956a
| Selecting slabs: Rocks and Minerals, v. 31, no. 5, 6, p. 277-279.
|
| 2497
| Owens, G. W.
| 1956b
| The Opal. In The Amateur Lapidary. Rocks and Minerals, v. 31, no. 9, 10, p. 491-493.
|
| 2498
| Owens, G. W.
| 1960a
| Chalcedony: In The amateur lapidary. Rocks and Minerals, v. 35, no. 5, 6, p. 243-246. survey
|
| 2499
| Owens, G. W.
| 1960b
| Research in an old story or Anne of Geierstein's mysterious opal: In the amateur lapidary. Rocks and Minerals, v. 34, no. 7, 8, p. 358.
|
| 2500
| Owens, V. S.
| 1962a
| Carnelian and iris bonanza in Tennessee: Lapidary Journal, v. 16, no. 1, p. 46, 48 - 55.
|
| 2501
| Owens, V. S.
| 1962b
| A new way to cut rainbow iris agate: Lapidary Journal, v. 16, no. 6, p. 584-586.
|
| 2502
| Owens, V. S.
| 1963
| Theories concerning the origin of agate: Lapidary Journal, v. 17, no. 1, p. 142-149.
|
| 2503
| Owens, V. S.
| 1964
| Guide to the agate fields of Bedford County, Tennessee: Lapidary Journal, v. 18, no. 1, p. 154-162.
|
| 2504
| Owens, V. S.
| 1965
| The Appalachian Plateau Country: Lapidary Journal, v. 19, no. 9, p. 1076-1084.
|
| 2505
| Owens?, V. S.
| 1966
| Some fossil corals of Tennessee: Lapidary Journal, v. 20, no. 4, p. 514-518.
|
| 2506
| Owens, V. S.
| 1967
| "Flintagatejaspchertquartzite": Lapidary Journal, v. 21, no. 3, p. 388-400. Structures
|
| 2507
| Owens, V. S.
| 1968
| Digging carnelian in Tennessee: Lapidary Journal, v. 22, no. 9, p. 1228-1232
|
| 2508
| Owens, V. S.
| 1969
| Speckeled Stones. Lapidary Journal, v. 22, no. 11, p. 1418-1420. Agatized conglomerates.
|
| 2509
| Owens, V. S.
| 1974
| Paint Rock Agate: Lapidary Journal, v. 28, no. 8, p. 1218-1224, 1236.
|
| 2510
| Owens, V. S.
| 1976a
| Pictures in stone: Lapidary Journal, v. 30, no. 4, p. 1082. Tennessee materials.
|
| 2511
| Owens, V. S.
| 1976b
| Calf Killer Agate: Lapidary Journal, v. 30, no. 6, p. 1394-1402. Calf Killer agate.
|
| 2512
| Owens, V. S.
| 1980
| The agates of Tennessee: Lapidary Journal, v. 34, no. 7, p. 1524 - 1531. Horse Mountain, Agate, Paint Rock Agate
|
| 2513
| Ozment, C. M.
| 1966
| Beautiful banded agate found at St. Louis, Missouri: Lapidary Journal, v. 20, no. 1, p. 106, 107.
|