| 2679
| Rad., U. von
| 1979
| SiO2-Diagenese in Tiefsee-sedimenten: Geologische Rundschau, v. 68, no. 3, p. 1025-1036.
|
| 2680
| Radcliffe, D., and S. Peacock
| 1977
| Fire agate as a potent geological delight: Lapidary Journal, v. 31, no. 5, p. 1096-1108. Mexico, general.
|
| 2681
| Rae, V. E.
| 1964
| Gemstones of Saskatchewan: Lapidary Journal, v. 18, no. 6, p. 703-704.
|
| 2682
| Rainer, T. B.
| 1984
| Nodules and pseudomorphs of fossil origin: Lapidary Journal, v. 38, no. 5, p. 674-681.
|
| 2683
| Raisin, C.
| 1889
| On Some Nodular Felstones of the Lleyn: Quarterly Journal of the Geological Society of London, v. 44, p. 247-268.
|
| 2684
| Rakin, V. I., and Kodanev, I. V.
| 1999
| Model' rosta khaltsedona v agate [Model of chalcedony growth in agate]: Vestnik Instituta Geologii (Rossisykaya Akademiya Nauk Ural'skoye Otdeleniye, Komi Nauchnyy Tseutr), 1999, 3, p. 8, 9.
|
| 2685
| Ralls, R. H.
| 1972a
| Rockhounding in Costa Rica, Part I: Gems and Minerals, no. 422, p. 36-38.
|
| 2686
| Ralls, R. H.
| 1972b
| Rockhounding in Costa Rica, Part II: Gems and Minerals, no. 423, p. 34-40.
|
| 2687
| Raman, Sir C. V., and Jayaraman, A.
| 1953
| The structure and optical behaviour of iridescent agate: Proceedings Indian Academy Sciences, Section A, v. 38, p. 199-206.
|
| 2688
| Rambow, E. V.
| 1964
| Collecting and cutting petrified bone and agate: Lapidary Journal, v. 18, no.5, p. 575-580.
|
| 2689
| Ramirez,?
| 1884, 1885
| Noticia historia de la minera de Mexico: D. F. Precious stones, pp. 237-250, (Note: listings this paper have been observed in several publications but this paper has never surfaced.)
|
| 2690
| Ramsay, A. M.
| 1959
| Scottish gemstone locations: Lapidary Journal, v. 13, no. 4, p.574, 576-582.
|
| 2691
| Ramsay, A. M.
| 1960
| Scottish Gem Localities, The Gemmologist, v. 29, no. 351, p. 208-215.
|
| 2692
| Ramsay, S.
| 1954
| Hunting agates in Scotland: Rocks and Minerals, v. 29, no. 3, 4, p. 127-129. Usan (Pronounced oosan), St Cyrus, Path of Condie, Perthshire, Lord Gray, Knifamore Castle, Cutter, Lord Panmure, collector; Fife, Pebble in Scotland = agate; Balmerino, Firth of Tay.
|
| 2693
| Ramsay, S.
| 1958
| Collecting in Scotland in 1957: Rocks and Minerals, v. 33, no. 1,2, p. 33-35. Iona Pebbles
|
| 2694
| Ramsey, D.
| 1984
| It's all Heddle's fault: Lapidary Journal, v. 38, no. 7, p. 1014-1015. Scotland, Field trip.
|
| 2695
| Rand, J. C.
| 1897a
| Minerals of Massachusetts, Part 1: The Mineral Collector, v. 4, no. 11, p. 161-165.
|
| 2696
| Rand, J. C.
| 1897b
| Minerals of Massachusetts, Part 2: The Mineral Collector, v. 4, no. 12, p. 180-182.
|
| 2697
| Rand, J. C.
| 1897c
| Minerals of Massachusetts, Part 3: The Mineral Collector, v. 5, no. 1, p. 6-8.
|
| 2698
| Rand, J. C.
| 1898
| Minerals of Massachusetts, Part 4: The Mineral Collector, v. 5, no. 2, p. 29.
|
| 2699
| Rand, T. D., Jefferis, W. W., and Cardeza, J. T. M.
| 1893
| Mineral localities of Philadelphia and vicinity: Academy of Natural Sciences of Philadephia. Proceedings, v. 44, p. 174-202.
|
| 2700
| Randal, O.
| 1956
| Collecting in Jacolitos Canyon: Gems and Minerals, no. 225, p. 44, 46, 50.
|
| 2701
| Randolph, G. C.
| 1934
| Agates through the ages: The Oregon Mineralogist, v. 2, no. 3, p. 1,2. History, mythology.
|
| 2702
| Randolph, G. C.
| 1935a
| Cryptocrystalline or amorphous varieties of quartz: The Mineralogist, v. 3, no. 1, p. 30-51.
|
| 2703
| Randolph, G. C.
| 1935b
| Does strong sunlight deepen the color of carnelian agate? The Mineralogist, v. 3, no. 3, p. 17-18. India, Australia, Brazil.
|
| 2704
| Randolph, G. C.
| 1935c
| Petrified forest topic of recent volume: The Mineralogist, v. 3, no. 7, p. 21. Review of Wieland, 1935.
|
| 2705
| Randolph, G. C.
| 1935d
| Opal - color composite of all gems: The Mineralogist, v. 5, no. 6, p. 24.
|
| 2706
| Randolph, G. C.
| 1935e
| Opal - Virgin Valley Field, Largest deposit in U.S.A. The Mineralogist, v. 3, no. 10, p. 9, 10, 18, 19.
|
| 2707
| Randolph, G. C., and Dake, H. C.
| 1936
| Extensive areas of silicification predominate in the west: The Mineralogist, v. 3, no. 4, p. 5, 6, 30-33. Magmatic water as silica source.
|
| 2708
| Ransom, J. E.
| 1953a
| Gemstones in the Bradshaws: Desert Magazine, v. 16, no. 10, p. 17-21.
|
| 2709
| Ransom, J. E.
| 1953b
| Agate-seamed butte at Bouse: Desert Magazine, v. 16, no. 11, p. 13-16.
|
| 2710
| Ransom, J. E.
| 1954
| Petrified flotsam along the Colorado: Desert Magazine, v. 17, no. 4, p. 8-11.
|
| 2711
| Ransom, J. E.
| 1955a
| Petrified forest trails: A guide to the petrified forests of America: Oregon Mineralogist Publishing Company. Portland, Oregon. 80 pp.
|
| 2712
| Ransom, J. E.
| 1955b
| Arizona gem trails and the Colorado Desert, Oregon Mineralogist Publishing Company, Portland Oregon. 96 pp.
|
| 2713
| Ransom, J. E.
| 1955c
| Gemstones of Eastern Arizona: Lapidary Journal, v. 9, no. 1, p. 4-6, 8, 10, 12, 14-16, 18, 20, 22. Clifton, Greenlee counties, Peloncillo Mountains, Limestone Canyon, Ward Canyon, Mulligan Peak.
|
| 2714
| Ransom, J. E.
| 1955d
| More California gem trails: The Mineralogist, v. 23, no. 3, p. 99-102.
|
| 2715
| Ransom, J. E.
| 1955e
| Southwest gem trails and the Green Squaw Jasper: The Mineralogist, v. 23, no. 4, p. 147-151. Arizona, field trip, type locality, description. ?
|
| 2716
| Ransom, J. E.
| 1955f
| Horsetail petrified forest of Colorado: The Mineralogist, v. 23, no. 9, p. 302, 304, 306.
|
| 2717
| Ransom, J. E.
| 1955g
| World's finest opalized woods: The Mineralogist, v. 23, no. 11, p. 387-390. Washington, Oregon, field trip.
|
| 2718
| Ransom, J. E.
| 1956a
| Montana's Dryhead Agate, a new locality: The Mineralogist, v. 24, no. 2, p. 56-58, 60. ?
|
| 2719
| Ransom, J. E.
| 1956b
| The Wyoming gem country: Lapidary Journal, v. 10, no. 1, p. 18, 20-24, 26, 28, 30, 32-33. Specimen Hill Black & White Agate, Sweetwater Agate, Eden Valley Wood, Green River Petrified Forest, Du Bois area, calcareous algae.
|
| 2720
| Ransom, J. E.
| 1956c
| Where to go in Arizona: Lapidary Journal, Annual Rock Hound Buyer's Guide, p. 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46 Ward Canyon, Peloncillo. ?
|
| 2721
| Ransom, J. E.
| 1956d
| Some Arizona gem trails: The Mineralogist, v. 24, no. 1, p. 3-7.
|
| 2722
| Ransom, J. E.
| 1956e
| Land of dinosaurs and agates: The Mineralogist, v. 24, p. 387-391.
|
| 2723
| Ransom, J. E.
| 1957
| North Pacific Coast gem hunting: Lapidary Journal, v. 11, no. 1, p. 72, 74, 76, 78, 80, 82, 84. Oregon, Washington, field trip.
|
| 2724
| Ransom, J. E.
| 1962
| The Rock-Hunter's Range Guide: Harper & Brothers, New York, New York. (Not seen)
|
| 2725
| Ransom, J. E.
| 1974
| Gems and minerals of America: A guide to rock collecting. Harper and Row, New York. 705 p.
|
| 2726
| Rapp, G. R., Jr., and Wallace, D. T.
| 1966
| Guide to Mineral Collecting in Minnesota: Minnesota Geological Survey, Educational Series-2, 2nd Revised Edition, 1979. 42 p. Lake Superior Agate, Paradise Beach Agate, Cold-Water Agate.
|
| 2727
| Rapson - McGugan, J. E.
| 1970
| The diagenesis and depositional environment of the Permian Ranger Canyon and Mowitsch Formations, Ishbel Group, from the Southern Canadian Rocky Mountains: Sedimentology, v. 15, no. 3, 4, p. 363-417.
|
| 2728
| Rath, G. V.
| 1877
| [Mineralogical Notes]: Verhandlungen naturhist Vereins, RheinlandSitz. d. niederrh. Ges.(selschaft?), p. 63-80.
|
| 2729
| Ratkevich, R.
| 1981
| Fossil collecting in Copper Country: Rocks and Minerals, v. 56, no. 1, p. 18-22, Arizona, petrified wood.
|
| 2730
| Ray, H. C.
| 1941
| Minerals of Porto Rico: Rocks and Minerals, v. 16, no. 10, p. 355-359.
|
| 2731
| Ray, W. C.
| 1964
| Agate paneled windows in a Texas church: Lapidary Journal, v. 17, no. 12, p. 1168-1169. Lapidary Project
|
| 2732
| Read, C. B.
| 1930
| Fossil floras of Yellowstone National Park, Part I, Coniferous woods of the Lamar River Flora: Carnegie Institution of Washington Publication 416, p. 1-9.
|
| 2733
| Ream, L. S.
| 1977
| Gems and Minerals of Washington, A collector's reference: Jax Products, Renton, VA. p. 202.
|
| 2734
| Ream, W. A., Dean, J. H. and Cole, A. J.
| 1971
| Some Namurian, Paralic sediments in Central Scotland: Journal Geological Society, v. E2, p. 127, 137-171.
|
| 2735
| Reamer, L.
| 1929
| Agate found in an old abandoned quarry: Rocks and Minerals, v. 3, no. 4, p. 109.
|
| 2736
| Reaves, D.
| 1965
| Suwanee River agatized coral---a new gem variety: Lapidary Journal, v. 19, no. 3, p. 420-422.
|
| 2737
| Reban, J.
| 1985
| Bohemian Garnets: Lapidary Journal, v. 39, no. 1, p. 18, 19, 24. Bohemian Agate illustrated in color.
|
| 2738
| Redfield, J. S.
| 1927
| Mineral resources in Oklahoma: Oklahoma Geological Survey Bulletin 42, 130 p.
|
| 2739
| Redford, W.
| 1990
| Agate Daisy: Lapidary Journal, v. 44, no. 2, p. 75-76. Lapidary Project.
|
| 2740
| Redshaw, L. C.
| 1936
| The birth of an opal: The Mineralogist, v. 4, no. 7, p. 23.
|
| 2741
| Reed, E. A.
| 1905a
| The precious stone industry in the United States: Scientific American Supplement, v. 59, p. 24470-24471.
|
| 2742
| Reed, E. A.
| 1905b
| The semi-precious stones of the United States: Mining and Scientific Press, v. 90, p. 355-356.
|
| 2743
| Reed, F. T.
| 1947
| Some Oklahoma gem trails: The Mineralogist, v. 15, no. 2, p. 64-65, 88. Field trip, Woods, Woodward, Harper counties, Oklahoma.
|
| 2744
| Reed, M. F.
| 1940
| Genesis of the "thunder egg": The Mineralogist, v. 8, no. 9, p. 368.
|
| 2745
| Reed, M. F.
| 1949
| The thunder egg: The Mineralogist, v. 17, no. 10, p. 492, 494.
|
| 2746
| Reese, J. H.
| 1947
| Lapidary treatment of opalized wood: Lapidary Journal, v. 1, no. 2, p. 57-58.
|
| 2747
| Reeves, A.
| 1941
| A Utah Field Trip: The Mineralogist, v. 9, no. 11, p. 403-404. Cisco Agate Field , (= Pigeon Blood Agate?)
|
| 2748
| Reeves, A.
| 1945
| Some Nevada Pickings: Rocks and Minerals, v. 20, no. 1, p. 16-17.
|
| 2749
| Reeves, K. R.
| 1952
| How to Photograph Gems: Lapidary Journal, v. 6, no. 3, p. 180-184. Nipomo, New Mexico, Redondo Beach, Horse Canyon agates illustrated.
|
| 2750
| Reiner, J.
| 1981
| Agates, in Thumbnails: Rocks and Minerals, v. 56, no. 4, p. 169.
|
| 2751
| Reiner, T. A.
| 1937
| Fracture agate: Rocks and Minerals, v. 12, no.12, p. 370.
|
| 2752
| Reiner, T. A.
| 1941
| Agates of the Yellowstone River Valley, Montana: Rocks and Minerals, v. 16, no. 9, p. 319-325. Montana, field trip.
|
| 2753
| Reiner, T. A.
| 1942
| Beautiful and unique agates from Texas: Rocks and Minerals, v. 17, no. 2, p. 58-59
|
| 2754
| Reiner, T. A.
| 1946
| Going West: Rocks and Minerals, v. 21, no. 3, p. 131-135. South Dakota, Montana, field trip.
|
| 2755
| Reis, O. M.
| 1916/1917a
| Uber blasenenstehung in Gesteinen und uber Achatbildung (Mit einem Anhang: Uber Baryt in Achatmandeln, uber Kalzitachat und Enhydros): Geognost Jahrehshefte, v. 29-30, p. 81-298. (Not seen)
|
| 2756
| Reis, O. M.
| 1916/1917b
| Einzelheiten uber Bau und Entstehung von Enhydros, Kalzitachat und Aghat, Part I: Geognost Jahreshefte, v. 29/30, p. 81-298. (Not seen). Harder (1993, p. 48 shows p. 7-44).
|
| 2757
| Reis, O. M.
| 1918-1919
| Einzelheiten uber Bau und Entstehung von Enhydros, Kalzitachat und Aghat, Part II: Geognost Jahreshefte, v. 31/32, p. 1-92. (Not seen)
|
| 2758
| Reis, O. M.
| 1923
| Das oberrotliegende Grenzlager im Haardtgebirge, seine Stellung und seine Einschlusse: Geognost Jahreshefte, v. 36, p. 75-102. (Not seen)
|
| 2759
| Reis, O. M., and Heim, F.
| 1924 (1925?)
| Uber Kieselszureseptarien und -Geoden (Lithophysen) in Verbindung mit Eruptivgesteinen: Jahrbuch Preuss Geol. L. Anst., v. 45, p. 451-488. (Not seen)
|
| 2760
| Reissmann, R.
| 1993
| Ausbildung und Stellung der Minerale hydrothermaler Quarz-Fluorit-Baryt-Gange im Osterzgebirge: Dissertation, TU Bergakademie Freiberg.
|
| 2761
| Reji, L., and Skalicky, J.
| 1977
| Gemstones of Czechoslovakia and their use in jewelry: Lapidary Journal, v. 31, no. 6, p. 1334-1338. Bohemian Agate, Cesky Raj.
|
| 2762
| Renton, J. L.
| 1934a
| Sagenite agate: Oregon Mineralogist, v. 2, no. 2, p. 9, 17. inclusions, rutile, actinolite, Au, Pyrite, natrolite, pyrolusite, stalk aggregates.
|
| 2763
| Renton, J. L.
| 1934b
| One of Oregon's Finest Agates: Oregon Mineralogist, v. 2, no. 4, p. 16. Lane County. sagenite
|
| 2764
| Renton, J. L.
| 1934c
| Polishing large slabs: Oregon Mineralogist, v. 2, no. 6, p. 10, 11,
|
| 2765
| Renton, J. L.
| 1935a
| One of Oregon's most beautiful sagenitic agates: The Mineralogist, v. 3, no. 1, p. 31. Lane County, Yachats.
|
| 2766
| Renton, J. L.
| 1935b
| Colored hyalite opal found in large masses at opal Butte, Ore.: The Mineralogist, v. 3, no. 1, p. 36, 37. Morrow County.
|
| 2767
| Renton, J. L.
| 1936
| Opal or agate filled "thunder eggs": The Mineralogist, v. 4, no. 1, p. 12, 46, 48, 50, 52. rhyolite bomb = thunder egg, septuary nodule = thunder egg, spherulite = thunder egg, Warm Springs Reservation, Indians, Clarno Formation, Mounts Hood and Jefferson.
|
| 2768
| Renton, J. L.
| 1939
| "Thunder Egg" Genesis: The Mineralogist, v. 7, no. 11, p. 414-415.
|
| 2769
| Renton, J. L.
| 1951
| Some notes on thunder eggs: Mineralogist, v. 19, no. 4, p. 171-177.
|
| 2770
| Reusch, E.
| 1864
| Uber den Agat: Ann. Phys. Chem, v. 123, p. 94-114. (Not seen).
|
| 2771
| Rex, R.
| 1946
| The gold mines of Monte Aguacate, Costa Rica: Rocks and Minerals, v. 21, no. 9, p. 561-563.
|
| 2772
| Rex, R.
| 1947
| Jasper near Milton, Vermont: Rocks and Minerals, v. 22, no. 10, p. 910-911.
|
| 2773
| Rhinear, T.
| 1947
| The stones of Sinai: Hobbies, July, 1947, v. 52, no. 5, p. 136. Moss agate of similar quality to Mocha Stone.
|
| 2774
| Rice, B.
| 1971
| Rainbow Wood in Oklahoma: Lapidary Journal,v. 25, no. 4, p. 601.
|
| 2775
| Rice, G.
| 1971
| Rainbow wood in Oklahoma: Gems and Minerals, no. 406, p. 13, 14. Oklahoma, field trip.
|
| 2776
| Rice, H. M.
| 1964
| Untitled: Lapidary Journal, v. 18, no. 7, p. 840. Letter concerning nomenclature for competitive exhibits in AFMS.
|
| 2777
| Richard, H. M.
| 1977
| Arizona's two hundred million year old trees: Lapidary Journal,v. 31, no. 1, p. 114-124. Petrified forest.
|
| 2778
| Richards, R. A.
| 1956
| Arizona Agate Hunting: Rocks and Minerals, v. 31, no. 5,6, p. 222, 279-280.
|
| 2779
| Richardson, C. H.
| 1925
| The mineralogy of Kentucky: Kentucky Geological Survey. 6th Series, v. 27, 127 p.
|
| 2780
| Richardson, T.
| 1946
| Where tree stumps turned to stone: Desert Magazine, v. 10, no 1, p. 19-21.
|
| 2781
| Richey, J. E.
| 1935
| Scotland: The Tertiary Volcanic District: Geological Survey of Great Britain, H.M.S.O., Edinburgh. (not seen)
|
| 2782
| Richey, J. E.
| 1948
| Scotland: The Tertiary Volcanic District. 2nd Edition, revised: Geological Survey of Great Britain, H.M.S.O., Edinburgh.
|
| 2783
| Richmond, J.
| 1990
| Lune Cone Onyx and Other Gemstones Gold, Gem and Treasure, v. xx, no. yy, p. zz. Tasmania
|
| 2784
| Richter, G. M. A.
| 1956
| Catalogue of Engraved Gems, Greek, Etruscan, Roman: Metropolitan Museum of Art, New York. L=Erma di Breitschneider, Roma, 143 p.
|
| 2785
| Richter, G. M. A.
| 1968?
| The engraved gems of the Greeks, Etruscans, and Romans: Phaidon Press, London, 351 p.
|
| 2786
| Rickell, W. L.
| 1973
| Flints for firing: Rock and Gem, v. 3, no. 2, p. 30. Muzzle loading rifles.
|
| 2787
| Ridgway, C., and Green, J. H.
| 1943
| The formation of tube agates: The Mineralogist, v. 11, no. 7, p. 210-211.
|
| 2788
| Ridgway, J. E.
| 1945
| Re Agate - Agate Creek, Percyville: Queensland Government Mineralogical Journal, no. 46, p. 299-300.
|
| 2789
| Rieman, H. M.
| 1970
| Cacti, Palms, Yuccas, etc.: Rocks and Minerals, v. 45, no. 4, p. 244-247. Relationships, Southwestern United States.
|
| 2790
| Rieman, H. M.
| 1971
| Thunder Eggs: Lapidary Journal, v. 24, no. 10, p. 1328-1335.
|
| 2791
| Rieman, H. M.
| 1973
| Chrysoprase: Lapidary Journal, v. 27, no. 3, p. 559-562.
|
| 2792
| Rieman, H. M.
| 1974
| Thundereggs: Lapidary Journal, v. 24, no. 10, p. 1328-1335. Priday Ranch, Succor Creek, Buchanan, Ochoco.
|
| 2793
| Rieman, H. M.
| 1977
| Palms and palm wood: Lapidary Journal, v. 30, no. 10, p. 2310-2312. Morphology, general.
|
| 2794
| Rieman, H. M.
| 1981
| Gingko (The maidenhair tree): Lapidary Journal, v. 35, no. 4, p. 950-952.
|
| 2795
| Rieman, H. M.
| 1983
| Rockhound Wood: Lapidary Journal, v. 37, no. 8, p. 1200 - 1205.
|
| 2796
| Riesen, F. E.
| 1993
| Condor Agate: Rock and Gem, v. 23, no. 3, p. 64, 65. Colored illustrations.
|
| 2797
| Riethe, P.
| 1979
| Hildegard von Bingen: das Buch fon den Steinem: Salzburg. (Not seen)
|
| 2798
| Riley, M. E.
| 1947
| "In the beginning---": Rocks and Minerals, v. 22, no. 1, p. 14-15. OR, Newport Beach.
|
| 2799
| Riley, M. S.
| 1947
| Flint Ridge, Ohio: Rocks and Minerals, v. 22, no. 8, p. 710-713.
|
| 2800
| Rinehart, H. E.
| 1944
| Life in Virgin Valley and history of the discovery of opals there: rocks and Minerals, v. 19, no. 1, p. 12-13.
|
| 2801
| Rink, W. J., Rendell, H., Marseglia, E. A., Luff, B. J., and Towsend, P. D.
| 1993
| Thermoluminescence spectra of igneous quartz and hydrothermal vein quartz: Physics and Chemistry and Minerals, v. 20, p. 353-361.
|
| 2802
| Riotte, L.
| 1971
| New Mexico's Rockhound State Park: Gems and Minerals, no. 410, p. 28, 29.
|
| 2803
| Ripley, G., and Dana, C. A., [editors]
| 1883
| The American Cyclopaedia: A popular dictionary of general knowledge: v. 1, A - Asher. D. Appleton and Company, New York: 1, 3, and 5 Bond Street. London 16, Little Britain, p. 177-179.
|
| 2804
| Robart, V. J.
| 1957
| Gem flint from Ohio: Lapidary Journal, v. 11, no. 1, p. 28, 30.
|
| 2805
| Roberson, L. E.
| 1948
| Mount and Wear Your Cabochons: Lapidary Journal, v. 2, no. 3, p. 140-142.
|
| 2806
| Roberts, W. L., and G. Rapp
| 1965
| Mineralogy of the Black Hills: South Dakota School of Mines and Technology Bulletin 18, 368 p.
|
| 2807
| Robertson, D.
| 1969
| Noodling in Virgin Valley: Desert Magazine, v. 32, no. 9, p. 8-10.
|
| 2808
| Robertson, D.
| 1970a
| Turtle Mountain Treasures: Lapidary Journal, v. 24, no. 4, p. 570-574.
|
| 2809
| Robertson, D.
| 1970b
| Collecting in Tuledad County: Lapidary Journal, v. 24, no. 5, p. 737-739. Tuledad Agate
|
| 2810
| Robertson, D.
| 1972a
| The Duffield's Little Joe opal mine: Lapidary Journal, v. 26, no. 7, p. 1096-1102.
|
| 2811
| Robertson, D.
| 1972b
| Thundereggs at Crane Creek: Rockhound, v. 1, no. 2, p. 31-33. ?
|
| 2812
| Robertson, D.
| 1972c
| Jackpot at Duck Flats: Rockhound, v. 1, no. 3, p. 10-12.
|
| 2813
| Robertson, D.
| 1975
| Owyhee Plume Agate: Rock and Gem, v. 5, no. 10, p. 16-21.
|
| 2814
| Robertson, D.
| 1976
| El Paso Mountains: Rock and Gem,v. 6, no. 10, p. 16-20. California, field trip.
|
| 2815
| Robins, D. Z.
| 1975
| Specimen collecting in Eastern Oregon: Lapidary Journal, v. 29, no. 3, p. 584, 586. Buchanan, Oregon Thunder Eggs, Eagles Nest, Stinking Water petrified woods.
|
| 2816
| Robinson, C. H.
| 1949
| Trip to Red Top Mountain, Washington: Rocks and Minerals, v. 24, no. 11,12, p. 574-579. Washington, Red Top Mountain, Ellensburg Blue Agate.
|
| 2817
| Robinson, G. W., and Alverson, S. W.
| 1971
| Minerals of the St. Lawrence Valley: Potsdam, New York 43 p.
|
| 2818
| Robinson, M., and Robinson, G.
| 1966
| A fun trip for rare agate: Lapidary Journal, v. 20, no. 9, p. 1106-1109. Ruin Agate, West Texas.
|
| 2819
| Robinson, S.
| 1825a
| A catalogue of American minerals with their localities; including... United States and British Provinces: Cummings, Hilliard and Company. Boston, Massachusetts, 316 p.
|
| 2820
| Robinson, S.
| 1825b, (1936)
| Early American agate localities: Extracted from A Catalogue of American Minerals with their Localities. Rocks and Minerals, v. 11, no. 9, p. 178-180.
|
| 2821
| Robles, S. J.
| 1991
| Las rocas ornamentales en la region de Murcia [Ornamental stones of Murcia] Mineria y Siderurgia, v. 5, p. 5-14.
|
| 2822
| Roblyer, J. R.
| 1939
| The Gem State Gems: The Mineralogist, v. 7, no. 1, p. 9, 10, 17, 18.
|
| 2823
| Rochester, E.
| 1947
| Iridescent limonite in chalcedony: Rocks and Minerals, v. 22, no. 10, p. 924-925. Mule Mountains, Riverside County, California.
|
| 2824
| Rochester, E.
| 1953
| Mule Mountain Agate, The Mineralogist, v. 21, no. 1, p. 18, 20. California, Fire Agate, South-eastern Riverside County, roses, nodules, chunks.
|
| 2825
| Rockwell, E. H.
| 1938
| Quartz minerals in Oregon: Hobbies, v. 43, no. 10, p. 106. Ashwood area, Rogue River area, black moss agate.
|
| 2826
| Roder, C.
| 1964
| Tampa's Coral Wonders. Lapidary Journal, v. 18, no. 7, p, 812-813.
|
| 2827
| Rodgers, J.
| 1969a
| The Lebanon Carnelian Area of Oregon: Lapidary Journal, v. 23, no. 1, p. 61-62. Lebanon Carnelian.
|
| 2828
| Rodgers, J.
| 1969b
| A visit to Succor Creek: Lapidary Journal, v. 23, no. 2, p. 324-328.
|
| 2829
| Rodgers, J.
| 1969c
| The snakeskin agate area, Oregon: Lapidary Journal, v. 23, no. 7, p. 960-962.
|
| 2830
| Rodgers, J.
| 1970a
| The Ochoco Mountains, Thunder Egg Country: Lapidary Journal, v. 23, no. 11, p. 1482-1484, 1486. Lucky Strike, Valley View Stein's Pillar, White Fir Springs, White Rock Springs.
|
| 2831
| Rodgers, J.
| 1970b
| The Rockhound's Map of Oregon: Portland, Oregon. Oregon Agate & Mineral Society publishers.
|
| 2832
| Rodgers, J.
| 1970c
| Digging Holly Petrified Wood:. Gems and Minerals, no. 392, p. 28. Oregon, field trip.
|
| 2833
| Rodgers, J.
| 1970d
| A visit to Antelope and Ashwood areas in Oregon: Lapidary Journal, v. 24, no. 1, p. 151-154.
|
| 2834
| Rodgers, J.
| 1970e
| The Kennedy Ranch---reopened after 25 years: Lapidary Journal, v. 24, no. 3, p. 420-426.
|
| 2835
| Rodgers, J.
| 1971a
| Ashwood, Oregon Agate: Lapidary Journal, v. 25, no. 3, p. 460-465. Friends Ranch eggs, McDonald Ranch Plumes, Norton Ranch, Priday Ranch.
|
| 2836
| Rodgers, J.
| 1971b
| Happenings in Oregon: Lapidary Journal, v. 25, no. 4, p. 588-591. "Yellow Jackets" (thunder egg), Roger Mountain Wood.
|
| 2837
| Rodgers, J. R.
| 1976
| Classic Oregon Localities: Lapidary Journal, v. 30, no. 1, p. 116-128. Willammette River, Lebanon, Holley, Medford areas, Oregon beaches, Ashwood, Richardson Ranch, Priday Ranch, Antelope, Biggs, Deschutes River, Sunflower Flats, Succor Creek, Graveyard Point, Sagenite Hill, Stinking Water, Nigger Rock, Buchanan, Mc Dermitt, Rome, Morrisonite, Hampton Butte, Pink Limbs, Maury Mountain, Eagle Rock, Carey Ranch, Swartz Canyon Wood, Ochoco Mts.
|
| 2838
| Rodgers, P. R.
| 1973
| Agates of the Ochil Hills: Gems, v. 5, no. 6, p. 2-3.
|
| 2839
| Rodgers, P. R.
| 1974a
| Cornelian Bay, Yorkshire: (Classic Collecting Sites of Britain, No. 10.). Gems, v. 6, no. 1, p. 35.
|
| 2840
| Rodgers, P. R.
| 1974b
| Gemstones of Rhum: Gems. v. 6, no. 5, p. 32-33.
|
| 2841
| Rodgers, P. R.
| 1975
| Agate collecting in Britain: B. T. Batsford, London and Sydney, 96 p., 16 line drawings, 65 photographs, 11 maps, 4 color plates. ISBN 0 7134 3056 7
|
| 2842
| Rodgers, P. R.
| 1976a
| Bloodstone Hill, (In the Footsteps of Heddle - 7).: Gems, v. 8, no. 2, p. 11-14.
|
| 2843
| Rodgers, P. R.
| 1976b
| Montrose, (In the Footsteps of Heddle - 8): Gems, v. 8, no. 3, p. 13-15.
|
| 2844
| Rodgers, P. R.
| 1976c
| Montrose Again, (In the Footsteps of Heddle - 9): Gems, v. 8, v. 4, p. 25-27.
|
| 2845
| Rodgers, P. R.
| 1976
| Burn Anne, near Galston, Ayrshire, (In the footsteps of Heddle - 7): Gems, v. 8, no. 6, p. 12, 13.
|
| 2846
| Rodgers, P. R.
| 1977
| Getting to know all about Rocks and Minerals, (Part VII: Pebbles on Scotland's Beaches): Gemcraft, v. 4, no. 10, p. 663-664.
|
| 2847
| Rodgers, P. R.
| 1979
| Agate collecting in Britain; selecting suitable sites: Gemcraft, v. 6, no. 3, p. 140-142.
|
| 2848
| Rodgers, P. R.
| 1982
| A preliminary report on English agates: In Sutherland, A., Gray, R., and Tait, A., (editors), Agate Symposium Proceedings, Scottish Mineral and Lapidary Club, Royal Scottish Museum Chambers Street, Edinburgh. p. 99-107.
|
| 2849
| Roebuck, P.
| 1974
| Gems of the silica group: Rocks and Minerals, v. 49, no. 2, p. 136.
|
| 2850
| Roedder, E.
| 1917
| Silicate liquid immiscibility in magmas. In Yoder, H. S. (editor) The evolution of the ingeous rocks, Princeton [University Press?], p. 15-57.
|
| 2851
| Rogers, A. F.
| 1924
| Mineralogy and petrography of fossil bone: Geological Society of America Bulletin, v. 35, no. 3, p. 535-556.
|
| 2852
| Rogers, A. F.
| 1938
| Fossil termite pellets in opalized wood from Santa Maria, California: American Journal of Science, v. 36, 389-392.
|
| 2853
| Rogers, A. F.
| 1947
| Blue agate of Lead Pipe Springs, San Bernardino County, California, [Abstract]: Geological Society of America Bulletin, v. 58, no. 12, pt. 2, p. 1256.
|
| 2854
| Rohde, B. H.
| 1964
| Collecting in Colorful Colorado: Lapidary Journal, v.1,no. 1, p.66-74.
|
| 2855
| Rohn, K.
| 1997
| Collecting moss agates in Montana; Prairie County still holds many rockhound treasures: Rock and Gem, v. 27, no. 10, p. 68-70, 72, 73.
|
| 2856
| Rohn, K. H.
| 1979
| In search of Lake Superior Agates: Gems and Minerals, no. 503, p. 76-79.
|
| 2857
| Rohn, K. H.
| 1980
| A Mesabi Range field trip: Gems and Minerals, no. 513, p. 36-39.
|
| 2858
| Rohn, K. H.
| 1981
| A Yellowstone field trip: Gems and Minerals, no. 527, p. 94-96.
|
| 2859
| Rohn, K. H.
| 1984
| Agates galore: Gems and Minerals, no. 564, p. 66-68.
|
| 2860
| Rohn, K. H.
| 1985
| A Red River Valley field trip: Gems and Minerals, no. 573, p. 40-42. North Dakota.
|
| 2861
| Rohn, K. H.
| 1998
| Miles of great collecting in Minnesota: Rock and Gem, v. 28, no. 5, p. 40-42, 47.
|
| 2862
| Rohn, K. H.
| 2000
| Red Drift Treasures: Rock and Gem, v. 30, no. 6, p. 80-82.
|
| 2863
| Rolff, A.
| 1970
| Gem news from Brazil: Lapidary Journal, v. 24, no. 3, p. 514-516.opal mining.
|
| 2864
| Rondeau, L., Mrs.
| 1953
| Ma Quant - thunder egg queen: The Mineralogist, v. 21, no. 5, p. 206, 208, 210.
|
| 2865
| Ronson, S.
| 1964
| Gemstones of Quebec: Lapidary Journal, v. 18, no. 6, p. 702
|
| 2866
| Root, F. K.
| 1972
| Minerals and rocks of Wyoming: Geological Survey of Wyoming Bulletin 56, 56 p.
|
| 2867
| Root, J. V.
| date unknown
| Bruneau Wood: Gems and Minerals, no. 409, p. 36, 37.Idaho, field trip.
|
| 2868
| Roots, R.
| 1965
| The fable of the foxes and the little red hen: Lapidary Journal, v. 19, no. 1, p. 174. picture agate
|
| 2869
| Roots, R. D.
| 1952
| Thunder eggs: Rocks and Minerals, v. 27, no. 5,6, p. 234-236. Nevada, Burns, Oregon, Southern California, Baker Ranch, New Mexico, Del Norte Colorado (=Monte Vista eggs), Ochoco, Oregon.
|
| 2870
| Rosemeyer, T.
| 2001
| A spectacular Find of Amygdaloidal Agates with Native Copper Inclusions from Michigan Copper Country: Rocks and Minerals, v. 76, no. 6, p. 403.
|
| 2871
| Rosenblohm, W. E.
| 1955
| Traveling the Appalachian Gem Trail: Lapidary Journal, v. 9, no. 1, p. 34, 36, 38, 40.
|
| 2872
| Rosenblohm, W. E.
| 1958
| Geologic and Gemologic Thought in Early Classical Times: Lapidary Journal, v. 12, no. 3, p. 394-404.
|
| 2873
| Rosenbusch, H.
| 1910
| Elemente der Gesteinslehre: v. 1, pages not known.
|
| 2874
| Rosenhouse, L.
| 1974
| Rockhounding in Central Oregon: Rock & Gem, v. 4, no. 4, p. 16-21.
|
| 2875
| Rosenhouse, L.
| 1975
| Gemstones along Idaho's River of No Return: Gems and Minerals, no. 451, p. 34-36.
|
| 2876
| Roskam, O., and Roskam, B.
| 1968
| Missouri's official state mineral and rock: Lapidary Journal, v. 22, no. 5, p. 632-633.
|
| 2877
| Rosler, H. J., Blankenburg, H., Reif, A., and Berger, H.
| 1978
| Uber die Moglichkeit der strukturellen Charakterisierung von Quarzen verschiedener Genese mit Hilfe der rontgenographischen Profilanalyse: Zeitschrift Geologische Wissenschaften, v. 6, p. 719-725. (Not seen)
|
| 2878
| Ross, B.
| 1973
| Montana agate: Rocks and Minerals, v. 48, no. 9, p. 556. Poem.
|
| 2879
| Ross, B.
| 1974
| Montana agate: Rocks and Minerals, v. 49, no. 9, p. 542. Poem
|
| 2880
| Ross, C. S.
| 1941
| Origin and geometric form of chalcedony-filled spherulites from Oregon: American Mineralogist, v. 26, no. 12, p. 727-732. Reprinted in The Mineralogist, v. 10, no. 6, p. 171-174, 192-193.
|
| 2881
| Ross, C. S., and Smith, R. L.
| 1961
| Ash-Flow Tuffs: Their Origin, Geological Relations, and Identification: U. S. Geological Survey Professional Paper 366, 81 pp.
|
| 2882
| Ross, R.
| 1974
| Lightning Ridge Opal Knobby: Lapidary Journal, v.27, no. 12, p. 1796-1802. Color pix.
|
| 2883
| Ross, R. N.
| 1937
| Oregon Coast Good Collecting Field: The Mineralogist, v. 5, no. 12, p. 12. Flower jasper, Newport, Agate beaches, Roads End, Enhydros.
|
| 2884
| Rossi, F.
| 1967
| La pittura di pietre: Florence, Banco Tuscano, 132 p.
|
| 2885
| Rossi, F., and Procacci, U.
| 1984
| La pittura di pietra: Ferdinando Rossi, Presentazione di Ugo Procacci, Fotolito Toscana, Giunti Martello Editore, Firenze, 170 p.
|
| 2886
| Roth, E. S.
| 1951
| Quartz: Rocks and Minerals, v. 26, no. 1,2. p. 18-21. General article
|
| 2887
| Rothbaum, H. P. and Rohde, A. G.
| 1979
| Kinetics of silica polymerization and deposition from dilute solutions of between 5 and 180 oC: Journal of Colloidal Interface Science, v. 71, no. 3, p. 533-559.
|
| 2888
| Rothrock, E. P.
| 1944
| A geology of South Dakota, Part 3: Mineral Resources, South Dakota Geological Survey Bulletin 15. 255 p.
|
| 2889
| Rothstein, J.
| 1960
| "Keweenaw - Copper Country:" Rocks and Minerals, v. 34, no. 9, 10, p. 440-444.
|
| 2890
| Rothstein, J.
| 1979
| The terminal moraines of Long Island, New York: Lapidary Journal, v. 32, no. 10, p. 2230-2236.
|
| 2891
| Rothstein, J.
| 1982
| Hydrophane: Lapidary Journal, v. 36, no. 9, p. 1490-1498, 1512-1514.
|
| 2892
| Roush, L., and Roush, W.
| 1968
| Gemstones from Ohio River gravel banks: Lapidary Journal, v. 22, no. 7, p. 974-975. West Virginia.
|
| 2893
| Rowe, M. E.
| 1956
| Stone Canyon Jasper: Lapidary Journal, v. 10, no. 1, p. 44-46. Jurassic, Franciscan, brecciated, yellow, white, green, red jaspers.
|
| 2894
| Rowe, R. C.
| 1977
| Biblical minerals: Gems and Minerals, no. 474, p. 36-37, 74-75.
|
| 2895
| Rowley, E. B.
| 1963
| Geology and mineralogy of the Adirondack Mountain region: Northland Rock and Mineral Club, Lake Placid, New York. 35 p.
|
| 2896
| Royster, T.
| 1951
| Iowa gem gravels: The Mineralogist, v. 19, no. 12, p. 562, 564.
|
| 2897
| Rozhkova, V. V., Yerilova, T. A., and Savel'yev, A. S.
| 1980
| Elektronnomikroskopicheskoye izucheniye severotomanskiklh agatov (v. svyazi s prirodoy ikh svoyetv I problemoy genezisu), [Electron microscope investigation of agate in northern Timan Ridge; properties and genetic problems]: Trudy-Institut Geologii, 30, p. 79-85.
|
| 2898
| Rundquist, B.
| 1992
| Geologists uncover agate origins, revamp theory of formation: Resource News. Conservation and Survey Division, IANR, University of Nebraska - Lincoln. v. 1, no. 5, p. 1, 2.
|
| 2899
| Ruskin, J.
| 1867a
| On banded and brecciated concretions: Geological Magazine, v. 4, first series, p. 337-339.
|
| 2900
| Ruskin, J.
| 1867b
| On brecciated formations: Geological Magazine, v. 4, first series, p. 481-483.
|
| 2901
| Russell, K.
| 1952
| Chicago lapidary show a success: Earth Science Digest, v. 6, no. 2, p. 19, 38. illustrated agates
|
| 2902
| Russell, K. M.
| 1973
| A love affair with the world's finest agates: Lapidary Journal, v. 26, no. 12, p. 1758-1760. Lapidary, general
|
| 2903
| Rutley, F.
| 1894
| On the origin of certain novaculites and quartzites: Quarterly Journal Geological Society of London, v. 50, no. 24, p. 377-392.
|
| 2904
| Ruzic, R. N.
| 1970
| Gemology and the Lapidary in Ancient India: Lapidary Journal, v. 24, no. 5, p. 696-707.
|
| 2905
| Rykart, R.
| 1989
| Quarz-Monographie: Ott-Verlag, Thun, xx p. (Pagination not known, not seen).
|
| 2906
| Rykart, R.
| 1995
| Zur Entstehung der sternformigen Achate in sauren Vulkaniten: Der Aufschluss, v. 46, p. 33-36.
|
| 2907
| Rykart, R.
| 1997
| Flammenachat aus Brasilien. Zur Entstehung ungewohnlicher Chalcedon-Auarz-Geoden aus dem Parana-Becken, Rio Grande do Sul, Brasilien: Lapis, 5/97, p. 27-31.
|
| 2908
| Rynerson, F.
| 1967
| Exploring and mining for gems and gold in the West, 54 years of prospecting, digging, and gem-cutting: Naturegraph Company, Healdsburg, California, 204 p.
|