Agates Bibliography

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IDAuthorYearArticle
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.