Agate Bibliography

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1241Haake, R.1990Uber die Achate von St. Egidien in Sachsen: Mineralien-Welt, January?, 1990, p. 39-43.
1242Haake, R., Fischer, J., and Reissmann, R.1991Uber das Achat - Amethyst - Vorkommen von Schlottwitz im Osterzgebirge: Mineral Welt, v. 2, p. 20-24.
1243Haake, R.1994Schmucksteine im Sachschen Erzgebirge: Veroff. Mus Naturk. Chemnitz. V. 17, p. 5-17.
1244Haake, R.2000Achate Sammeln in Deutschland, Teil 1: Bode-Verlag, Haltern.
1245Haake, R., and Holzhey, G.1989Achate in kugelformigen Rhyoliten des Rotliegenden im sachsisch-thuringischem Raum: Chemie Erde, v. 49, no. xx, p. 173-183.
1246Haberly, L., translator1957Pliny's Natural History. An account by a Roman of what Romans knew and did and valued: Compacted edition, Frederick Ungar Publishing Company, New York. 192 p.
1247Hacht, U. von1984Geschiebe-Achate von Sylt: Der Geschiebesammler, v. 18, no. xx, p. 37-46. Hamburg.
1248Hadley, W. D.1968Saddle Mountain "Picture Wood" area re-opened: Lapidary Journal, v. 22, no. 4, p. 601-603.
1249Hadley, W. D.1974aThe Quartz Story: Rock & Gem, v. 4, no. 6, p. 56-60.
1250Hadley, W. D.1974bTumble-Polish Slabs: Rock & Gem, v. 4, no. 12, p. 44-46.
1251Hadley, W. D.1976aOpal cutting simplified: Rock & Gem, v. 6, no. 10, p. 8-15.
1252Hadley, W. D.1976bOregon's Extraordianry Petrified Log: Rock & Gem, v. 6, no. 1, p. 14-17.
1253Hadley, W. D.1990Ancient Agate: Rock and Gem, v. 20, no. 5, p. 48-50.
1254Hafner, C.1955More California Gem Trails: The Mineralogist, v. 23, no. 1, p. 3-6
1255Hafner, C.1955Texas minerals and agates: The Mineralogist, v. 23, no. 9, p. 312, 314.
1256Hafner, C.1958Gems on our mind - to Oregon: The Mineralogist, v. 26, no. 1, p 8 - 11.
1257Hafner, F.1978Die basischen Vulkanite des Oberrotliegenden zwischen Alzey und Odernheim (Saar-Nahe-Gegiet). Ein Beitrag zu ihrer Geologie, Petrographie, und Geochemie: Mitteilungen Pollichia, v. 66, p. 25-89.
1258Hagar, D.1944A word about Redondo Beach, California - and "beach pebbles": Rocks and Minerals, v. 19, no. 4, p. 103-105.
1259Hagar, D.1946A few California Locations: Earth Science Digest, 1, no. 5, p. 8 - 9. Redondo Beach, Mint Canyon (bloodstone), Opal Mountain, Calico Jasper , ( Barstow Area), Mule Canyon , (Yermo Area) palm root, Lavic Jasper, Afton Canyon, Bicycle Lake, Lead Pipe Springs, Last Chance Canyon, Chapinite?, Poppy Jasper, Brecciated Jasper, San Miguel.
1260Hagar, J.1943The Nipomo "Bean Fields": Rocks and Minerals, v. 18, no. 12, p. 359. CA, FT.
1261Hahn, M.1950The Development of the Gem Industry at Idar-Oberstein: Lapidary Journal, v. 4, no. 4, p. 270, 272, 274.
1262Hahn, M.1966Zur Frage nach dem Alter der Idar-Oberstein Edelsteinindustrie: Zeitschrift der Deutsch Gesselschaft fur Edelstein Kunde. 56, no. xx, p. 24-26.
1263Hahn, R. H.1974Die Steinschneidekunst uber sechs Jahrtausende: Zeitschritf Deutschland Gemmologie Gesselschaft. 23, no. 1, p. 52-61.
1264Haidinger, W.1848Uber die Metamrophose der Gebirgsarten: xxxxx (Does above citation really exist or is it a long typo?)
1265Haidinger, W.1849aBerichte uber die Mittheilungen von Freunden der Naturwissenschaften in Wien: (nebulous citation) July, no. 4, p. 61-69, 118, 119.
1266Haidinger, W.1849bNeue Jahrbuch fur Mineralogie. p. 735.
1267Haidinger, W.1850?Noggerath. Achatmandeln: Berichte. uber die Mittheilungen von Freunden der Naturwissenschaften in Wien, v. 65?, no. xx, p. 62-65, 118-119. Dates of Haidinger must be checked out; try Terry Moxon xxxxx
1268Halenar, L.1947Opal Prospecting in Australia and How to Prepare Opal: Lapidary Journal, v. 1, no. 3, p. 128-131.
1269Hall, G. L.1975Agate! Agate! Agate! Gems and Minerals, no. 453, p. 8-11. Oregon, FT, sunset agate, golden moss agate, Richardson Ranch.
1270Hall, G. L.1979Priday thundereggs---a new beginning: Gems and Minerals, 498, p. 14, 15, 17, 18, 20.
1271Hall, R.1944aScenic and fortification agates: The Mineralogist, v. 12, no. 7, p. 226-229. FT, MT, SD, Kern Beds.
1272Hall, R.1944bIowa Gem Gravels: The Mineralogist, v. 12, no. 10, p. 334-335.
1273Hall, R.1952Iowa gem gravels: The Mineralogist, v. 20, no. 5, p. 204.
1274Hall, R. D.1958Gemmy Chert in Ripley County, Missouri: Lapidary Journal, v. 12, no. 1, p. 114.
1275Hamilton, E.1977Release a rainbow: Gems. 9, no. 2, p. 20, 21
1276Handley, B. L.1942Some gem-stones of northeastern California: Rocks and Minerals, v. 17, no.12, p. 412. Wood opal, fire opal.
1277Hanley, F. B.1939Minnesota's Thomsonite Beach: Rocks and Minerals, v.14, no. 2, p. 71-376. Peripheral
1278Hanni, H. A., Schubiger, B., Kiefert, L., and Haberli, S.1998Raman Investigations on Two Historical Objects from Basel Cathedral: The Reliquary Cross and Dorothy Monstrance: Gems and Gemology, v. 34, no. 2, p. 102-112.
1279Hanschildt, J.1978The Spencer, Idaho opal episode: Lapidary Journal, v. 32, no. 10, p. 540-543.
1280Hanson, L.1956Gems of Idaho: Lapidary Journal, v. 10, no. 1, p. 60, 61. Fryite, Clearwater Picture Stone, Hell's Canyon Agate, Graveyard Point, Sucker Creek, Poison Creek, Challis blue Agate
1281Harden, C. E.1949Orientation of agate: The Mineralogist. 71, no. xx, p. 435 - 436
1282Harden, C. E.1958Orientation of agate: The Mineralogist, v. 26, no. 9, p. 231-233. lapidary help
1283Hardenberg, H. J.1961Michigan's Gem Stones: Lapidary Journal, V. 15, no. 1, pp. 66-72.
1284Harder, H.1965Experimente zur Ausfallund der Kieselsaure: Geochimica et Cosmochimica Acta, v. 29, p. 429-442.
1285Harder, H.1993Zur Entstehung von verkieselten Holzern: Aufschluss, v. 44, no. xx, p. 23-31.
1286Harder, H.1993Agates-formation as a multicomponent colloid chemical precipitation at low temperatures: Neues Jahrbuch Mineralogie Mh., 1993, H. I, p. 31-48.
1287Harder, H.1994Achat als Nebenprodukt der Tonmineralbildung: Zeitschrifft Deutsches Gemmologische Gesselschaft, v. 43, p. 19-37
1288Harder, H., and Flehmig, W.1967Bildung von Quarz aus verdunnten Losungen bei niedrigen Temperaturen: Naturwissenschaften, v. 54, no. xx, p. 140.
1289Harder, H.1970Quarzsynthese bei tiefen Temperaturen: Geochimica et Cosmochimica Acta, v. 34, no. xx, p. 295-305.
1290Harder, H., and Menschel, G.1967Quarzbildungen am Meeresboden: Naturwissenschaften, v. 54, no. xx, p. 140.
1291Harder, H., and Menschel, G.1970Quarzsynthese bed tiefen Temperaturen: Geochimica et Cosmochimica Acta, v. 34, no. xx, p. 295-305.
1292Harding, B. L.1976Mineral Puzzle - Chalcedony: Rocks and Minerals, v. 51, no. 2, p. 53, 54. Word Puzzle
1293Hardy, D. C., Monroe, E. A., Randall, C. E., and Sass, D. B.1976Electron optical study of silica minerals: Geological Society of America, Abstracts with programs, v. 8, no. xx, p. 189-190.
1294Harmon, T.UndatedHow to Get the Most out of Montana Agate: Harmon's Agate and Silver Shop, Box 94, Crane, MT 59217. 8 p.
1295Harmon, T.1979Hunting the Yellowstone for Montana Agate: Gems and Minerals, no. 503, p. 84 - 85.
1296Harmon, T.1988"Big Sky" Necklace. Lapidary Journal, v. 42, no. 7, p. 81-82. How to Article.
1297Harmon, T.1992Big Sky Belt Buckle: Lapidary Journal, v. 46, no. 1, p. 135-140. Lapidary Project.
1298Harper, J. L.1960The geology of the southern Hartville Uplift Area, Platte and Goshen counties, Wyoming: University of Nebraska, unpublished MS thesis. 123 p.
1299Harris, C.1989Oxygen-isotope zonation of agates from Karoo volcanics of the Skeleton Coast, Namibia: American Mineralogist, v. 74, no. xx, p. 476-481.
1300Harrison, C.1941aNotes from the West: Rocks and Minerals, v. 16, no. 3, p. 75. CA, OR , no. Newport Beach), NZ
1301Harrison, C.1941b(Los Angeles , Co. Calif.) Lapidary Society Exhibition. Rocks and Minerals, v. 16, no. 5, p. 161-163.
1302Harrison, R. K.1975Jasperoid and chalcedonic concretions in anhydrite, Sandwich Mine, St. Bees, Cumbria: Bulletin Geological Survey of Great Britain, v. 52, no. xx, p. 55-60.
1303Harriss, C. W.1970Sunshine and rocks in Florida: Gems and Minerals, v. 388, p. 30, 31.
1304Harstad, A. J.1927The Agate: Rocks and Minerals, v. 2, no. 1, p. 3-5.
1305Harstad, A. J.1936"Agates" and such. Some Pertinent Comments from an Old Dealer: Rocks and Minerals, v. 11, no. 9, p.140-150.
1306Harstad, A. J.1938Montana agate: Rocks and Minerals, v. 13, no. 11, p. 323-328.
1307Hart, G.1927A compilation of gem names, no. A). Rocks and Minerals, v. 2, no. 4, p. 132-135.
1308Hart, G.1928aA compilation of gem names, no. B: Rocks and Minerals, v. 3, no. 1, p. 6-7.
1309Hart, G.1928bA compilation of gem names, no. C: Rocks and Minerals, v. 3, no. 2, p. 52-53.
1310Hart, G.1928cA compilation of gem names, no. C, continued: Rocks and Minerals, v. 3, no. 3, p. 88-90.
1311Hart, G.1928dA compilation of gem names , no. D, E: Rocks and Minerals, v. 3, no. 4, p. 128-129.
1312Hart, G.1929aA compilation of gem names, no. F, G: Rocks and Minerals, v. 4, no. 1, p. 17-19.
1313Hart, G.1929bA compilation of gem names, no. H-J: Rocks and Minerals, v. 4, no. 2, p. 48-49.
1314Hart, G.1929cA compilation of gem names , no. K, L: Rocks and Minerals, v. 4, no. 3, p. 92-93.
1315Hart, G.1929dA compilation of gem names, no. M, N: Rocks and Minerals, v. 4, no. 4, p. 116-117.
1316Hart, G.1930aJasper, In the Gem Department: Rocks and Minerals, v. 5, no. 2, p. 60, 61
1317Hart, G.1930bA compilation of gem names, no. O, P: Rocks and Minerals, v. 5, no. 2, p. 64-65.
1318Harvey, B. C.1964New agate discoveries in Old Mexico: Rocks and Minerals, v. 39, no. 3,4, p. 117, 121. Dgo. Mex, Coneto Picture Agate, Aztec Miracle Stone
1319Harvey, C. H.1960Stratigraphy, sedimentation and environment of the White River group of the Oligocene of northern Sioux County, Nebraska: University of Nebraska, unpublished PhD thesis, 151 p.
1320Hatipoglu, M., and Dora, O. Ozcan2000Ankara agatinin mineralojisi ve bantli yapinin kokeni [Mineralogy of the Ankara Agate and origin of its banded structures]: Yerbilimieri, v. 22, p. 1-12 (English Summary).
1321Hatschekk, E.1912Reaktionen im Kieselsaure-Gel: Kolloid-Zeitschrifft, v. 10, no. xx, p. 77-79.
1322Hattori, I.1989Length-slow chalcedony in sedimentary rocks of the Mesozoic allochthonous terrain in central Japan and its use for tectonic synthesis: In Heior, J. R., and Obradovic, J., editors, Siliceous deposits of the Tethys and Pacific Regions, Springer Verlag, Berlin, p. 201-215.
1323Hattori, I.1996From chalcedonic chert to quartz chert; diagenesis of chert hosted in Miocene volcanic-sedimentary succession, central Japan: Journal of Sedimentary Research, Sec. A., Sedimentary Petrology and Process, v. 66, no. 1, p. 163-174.
1324Hausel, W. D.1986Minerals and Rocks of Wyoming: Geological Survey of Wyoming, Bulletin 66, 117 p.
1325Hausel, W. D.1996Rock Hound's, Wyoming Geo-Notes, no. 49, p. 49, 50 Youngite, Slater Agate
1326Hausel, W. D.1998aRockhound's Corner, part I, Quartz (Chalcedony) in Wyoming: Wyoming Geo-notes, no. 59, p. 58-62
1327Hausel, W. D.1998bRockhound's Corner, part I, Quartz (Chalcedony) in Wyoming: Wyoming Geo-notes, no. 60, p. 55-57.
1328Hausel, W. D.1999Quartz and chalcedony in Wyoming. California Mining Journal, v. 68, no. 10, p. 38-40, 42, 43.
1329Hausel, W. D., and Sutherland, W. M.2000Gemstones and other unique minerals and rocks of Wyoming, a field guide for collectors: Wyoming State Geological Survey, Bulletin 71, 267 p.
1330Hawkins, A. C.1858Oriental and western Siberia: no. (Excerpts): in Rocks and Minerals, v. 16, no. 2, p. 39-45. , no. see Atkinson, T. W.)
1331Hawkins, A. C.1935The book of minerals: John Wiley and Sons, New York. p. 70-72.
1332Hawley, D.1970World's largest black opal: Lapidary Journal, v. 24, no. 5, p. 684.
1333Hay, R. L.1962Origin and diagenetic alteration of the lower part of the John Day Formation near Mitchell, Oregon: In Petrologic studies: Geological Society of America, Buddington Volume, p. 191-216.
1334Hay, R. L.1963Stratigraphy and zeolitic diagenesis of the John Day Formation of Oregon: California University Department Geology Science Bulletin 42, no. 5, p. 199-262.
1335Hayward, E. F.1935Iris eggett and Pyrite Pete (poem): The Mineralogist, v. 3, no. 1, p. 48.
1336Hazen, G. E.1940Some Nevada Localities: The Mineralogist, v. 8, no. 1, p. 11.
1337Heaney, P. J.1993A proposed mechanism for the growth of chalcedony: Contributions to Mineralogy and Petrology, v. 115, no. 1, p. 66-74.
1338Heaney, P. J.1994Geochemical self-organization in agates at the sub-micron scale [Abstract]: Abstracts with Programs, Geoplogical Society of America, 1994 Meeting, Seattle, WA, v. 26, no. 7, p. 111.
1339Heaney, P. J.1995Moganite as an indicator for vanished evaporites: a testament reborn? Journal of Sedimentary Petrology, v. A65, p. 633-638.
1340Heaney, P. J., and Davis, A. M.1994Geochemical self-organization in agates at the sub-micro scale: Geological Society of America, Abstracts with Programs, v. 26, p. A-111.
1341Heaney, P. J.1995Observation and Origin of Self-Organized Textures in Agates: Science, v. 269, Sept.15, 1995, p. 1562-1565.
1342Heaney, P. J., and Post, J. E.1992The widespread distribution of a novel siclica polymorph in microcrystalline quartz varieties: Science, no. 225, p. 441-443.
1343Heaney, P. J., Prewitt, C. T., Gibbs, V. (editors) Mineralogical Society of America1994Silica: physical behavior, geochemistry and materials applications: Mineralogical Society of America, reviews in mineralogy, v. 29, p. 606 p.
1344Heaney, P. J., Veblen, D. R., and Post, J. E.1994Structural disparities between chalcedony and macrocrystalline quartz: American Mineralogist, v. 79, p. 452-460.
1345Heath, D. E.1963White man in a hole: Lapidary Journal, v. 17, no. 6, p. 642-649.
1346Heath, D. E.1965Coober Pedy Today: Lapidary Journal, v. 19, no. 7, p. 818-821.
1347Heath, D. E.1966Opal Cutting Tips from Coober Pedy: Lapidary Journal, v. 19, no. 11, p. 1264-1267.
1348Heath, D. E.1968Coober Pedy Opal: Lapidary Journal, v. 22, no. 8, p. 1001. Photo Essay
1349Hebner, M.1962More About Flower Blossom Geodes: Gems and Minerals, September, 1962, no. xx. Biconoids, Templeton, California, Paso Roble Thunder Eggs.
1350Heddle, M. F.1900On the structure of agates: Transactions Geological Society of Glasgow, v. 11, no. 2, p. 153-173.
1351Heddle, M. F.1901The Mineralogy of Scotland, Volume I: David Douglas, Edinburgh, p. 58-84.
1352Heddle, M. F., and J. S. Thomson1893On the "skin" of agates: Mineralogical Magazine, v. 10, no. 47, p. 248-250. Chemical analyses.
1353Hedges, E. S.1932Liesegang rings and other periodic structures: Nature, v. 129, p. 400. London.
1354Heflin, E.1979Beach treasures of Whiskey Run: Gems and Minerals, no. 497, p. 10-12, 68-70, 93. Oregon, ft.
1355Heiler, W. (Photographer)2001Kreisunder Achat aus Waldhambach! Lapis, May, 2001, p. 33. Large eye agate.
1356Heim, J. L.1799Geologische Beschreibung des Thruinger Waldgeburgs, Zweiter Theil: Meiningen, J. G. Hanisch.
1357Hein, H.1908Untersuchung uber faserige Kieselsauren und deren Verhaltnis zu Opal und Quarz: Neues Jahrbuch Mineralogie, Geologie, und Palaontologie, Beil.-Bd., v. 25, no. xx, p. 182-231. After Liesegang, 1915.
1358Hein, J. R., Scholl, D. W., Barron, J. A., Jones, M. G., and Miller, J.1978Diagenesis of late Cenozoic diatomaceous deposits and formation.: ?????p. 155-181. After Moxon, 1996.
1359Heinrich, E. Wm.1976The mineralogy of Michigan: Department of Natural Resources, Geological Survey Division. Bulletin 6, 225 p.
1360Heinz, H.1930Die Entstehung der Achate, ihre Verwitterung und ihre kunstliche Farbung: Chemie Erde, v. 4, n. xx, p. 501-525.
1361Helgestad, J.1973The fairy wrens of Australia: Lapidary Journal, v. 27, no. 5, p. 812, 813. lapidary project.
1362Heller, R. L.1954Stratigraphy and Paleontology of the Roubidoux Formation of Missouri: State of Missouri, Division of Geological Survey and Water Resources, v. 35, 2nd Series, 118 p. Includes material about cherts that are popularly called Mozarkite.
1363Hellmers, J. H.1949Der Vorgang der Verkieselung: Abhandlungen Geol. Landenstaldt Berlin, N.F., no. 218, p. 1-15.
1364Hemingway, S. J., and Vondra, C. F.1992The origin of nodules in the Lower Cretaceous Cloverly Formation, Bighorn Basin, Wyoming [Abstract]: Geological Society of America, Abstracts With Programs, v. 24, no. 4, North Central Section Meeting, University of Iowa, Iowa City, Iowa, April 30 - May 1, 1992, p. 20.
1365Hemmenway, K. N.1964A little known deposit of petrified wood on Cape Verde: Lapidary Journal, v. 18, no. 7, p. 835.
1366Henrickson, H. H.1958How to make moss agates: Lapidary Journal, v. 11, no. 6, p. 636-640.
1367Henley, R. F.1949Ramblings of a rockhound: Rocks and Minerals, v. 24, no. 11,12, p. 569. common opal, Klamath Falls, OR, area.
1368Henley, R. F.1950Ramblings of a rockhound. Rocks and Minerals, v. 25, no. 1, 2, p. 35- 38. CA, Horse Canyon=Cache Creek, Lavic jasper, Cady Mountains.
1369Henig, M.1975The Lewis Collection of Engraved Gemstones in the Corpus Christi College, Cambridge: British Archeological Reports, Supplementary Series I, 94 p.
1370Henn, U., and Balzer, R.1995Ein neues Vorkommen von Feueropalen in Brasilien: Zeitschrifft Deutsches Gemmologische Gesselschaft, v. 40, p. 11-23.
1371Henry, D. J.1997Agate, chalcedony, jasper, chert and opal: in Birch, W. D., et al, editors, Gem Minerals of Victoria. Special Publications, Mineralogical Society of Victoria 4, p. 86-95
1372Henry, D. J.1946aThe California Calico Mountains: The Mineralogist, v. 14, no. 5, p. 227-233. Calico Mts., Mid. Miocene, Rosamond Ser., Wall Street Jasper, Wall Street Canyon
1373Henry, D. J.1946bThe northeast portion of Eagle Crags: The Mineralogist, v. 14, no. 7, p. 339-342. Sawtooth Mts., CA
1374Henry, D. J.1946cLos Angeles Lapidary exhibit: The Mineralogist, v. 14, no. 7, p. 377- 378. MT picture agates
1375Henry, D. J.1947aCollecting Kern County, California: The Mineralogist, v. 15, no. 1, p. 3-7. CA, FT, Last Chance Canyon Agate. Woods, Palm root
1376Henry, D. J.1947bWiley Well District, California, a Mecca for the collector: The Mineralogist, v. 15, no. 4, p. 171-176.
1377Henry, D. J.1947cBlack Hills of California: The Mineralogist, v. 15, no. 9, p. 451- 453. Hauser Geode Bed, name precedes Chocolate Mt. Geode beds, discovered by Thompson? Pastelite
1378Henry, D. J.1950Gem Trail Journal. Gordon's, 1850 East Pacific Coast Highway, Long Beach 6, Calif., Adv., in Lapidary Journal, v. 6, no. 4, p. 251.
1379Herbert, J. F.1993Francolite composition and diagenetic history of dinosaur bones, Upper Jr. Morrison Fm., Dinosaur National Monument, Utah [Abstract]: Abstracts with Programs, Geological Society of America, 1993 Annual Meeting, Boston, MA, October 25-28, 1993, v. 25, no. 6, p. 460.
1380Herold, J.1949Uber die Ursachen der Achatbildung. Monzingen: no furhter information, rkp
1381Hess, D. F.1976Agate Locality, Summit Valley, Montana: Earth Science, v. 29, no. 6, p. 291. K pyroxene andesites
1382Hesse, R.1988Diagenesis of biogenic siliceous sediments: Geoscience Canada, v. 15, no. 3, p. 171-192.
1383Hestand, K.1978Perlas Islands of Panama: Lapidary Journal, v. 32, no. 3, p. 738-741. Canal Zone
1384Heuschkel, M. D.1971Some Carey Plume Agate is still available: Lapidary Journal, v. 25, no. 9, p. 1320-1321
1385Hewitt, C. G.1977Adventures with Virgin Valley opals: Lapidary Journal, v. 31, no. 9, p. 1994-1998.
1386Heydemann, A.1964Untersuchungen uber die Bildungsbedingungen von Quarz im Termpertur-bereich zwischen 100 oC and 250 oC: Beitrage Mineralogie Petrogr. v. 10, no. xx, p. 242-259.
1387Heylman, E. B.1983aMap of the Queretaro opal mines: Lapidary Journal, v. 37, no. 2, p. 344-345.
1388Heylman, E. B.1983bOpal localities in west central Mexico: Lapidary Journal, v. 37, no. 4, p. 598-602.
1389Heylman, E. B.1983cFour opal localities in Mexico: Lapidary Journal, v. 37, no. 6, p. 880-882.
1390Heylman, E. B.1984aMineral localities in Iceland: Lapidary Journal, v. 37, no. 10, p. 1438-1444.
1391Heylman, E. B.1984bVarieties of Mexican opal: Lapidary Journal, v. 38, no. 5, p. 746-747.
1392Heylman, E. B.1984cZimapan opal. Are the mines lost? Lapidary Journal, v. 38, no. 6, p. 794.
1393Heylman, E. B.1984dMap of El Terrero Fire Agate Mine: Lapidary Journal, v. 38, no. 8, p. 1052.
1394Hileman, D.1970Volcano Valley: Gems and Minerals, no. 398, p. 34, 47-51. CA, FT.
1395Hileman, D.1971Agate in the Lava Mountains: Gems and Minerals, no. 400, p. 22, 23, 38, 39.
1396Hill, C. E.1950Agate mines offered: The Mineralogist, v. 18, no. 1, p. 48. sale notice, historical.
1397Hill, C. E.1954Photo of Arizona vein agate mine: The Mineralogist, v. 22, no. 11, p. 402.
1398Hill, D., and A. K. Denmead1960The Geology of Queensland: The Geological Society of Australia, Volume 7. Melbourne University Press. 474 p.
1399Hill, K.1973aTumbling department: in Rocks and Minerals, v. 48, no. 4, p. 225 - 226. lapidary treatment.
1400Hill, K.1973bTumbling department: ibid., v. 48, no. 5, p. 297-298. common opal
1401Hill, R. J., and Gibbs, G. V.1979Variations in d(T-O), d(T...T) and (TOT) in silica and silicate minerals, phosphates, and aluminates: Acta Crystallographica, Section B, v. 35, p. 25-30.
1402Hill, R., Sr.1978Tigereye and its kissing cousins: Gems and Minerals, no. 493, p. 16-19, 48, 50, 51, 94-96.
1403Hill, V. D.1940Precious Fire Opal: Hobbies, v. 45, no. 8, p. 109-116.
1404Hiller, J.1971Connecticut Mines and Minerals: Privately Published. no further data.
1405Hills, M. W.1980Start your summer visiting the EFMLS convention and show, June 20-22, 1980: Lapidary Journal, v. 34, no. 3, p. 742-745. Greenbrier Agate
1406Hilton, J. W.1962Beach Combing in the Desert: Desert Magazine, v. 25, no. 6, p. 10-13.
1407Hilton, T.1972Prospecting in New Mexico: Lapidary Journal, v. 25, no. 10, p. 1391-13xxxxxxxxxxxx
1408Himmelbauer, A.1913Die Bedeutung der Kolloidchemie fur die Mineralogie (Spezieller Teil): Fortschritte Mineralogie, Kristallographie, Petro-graphie, v. 3, no. xx, p. 32-62.
1409Hintze, C.1915Handbuch der Mineralogie: Bd. 1, Abt. 2, Leipzig. nfi, rkp
1410Hitchcock, C. H.1861Part III. Azoic Rocks: In Report on the Geology of Vermont: Descriptive, Theoretical, Economical, and Sphenographical. By: Hitchcock, E., Hitchcock, E., Jr., Hagen, A. D., and Hitchcock, E., In Two Volumes. Albert D. Hager, Proctorsville, Vermont, v. 1, p. 10-558; v. II, p. 559- 988. Agate and jasper references on p. 367, 418, 482.
1411Hockett, K.1975Everybody loves laminated Lakers: Lapidary Journal, v. 29, no. 7, p. 1378-1381. MN, FT
1412Hockett, K.1978Northeast Nebraska rock: Lapidary Journal, v. 31, no. 10, p. 2150-2155. Lakers
1413Hockett, K.1979Mecca for rockhounds: Lapidary Journal, v. 32, no. 10, p. 2262-2264. NE, Chadron Fm.
1414Hocking, A.1975South Africa Mining: Macdonald South Africa, Cape Town, 64 p.
1415Hodges, K.1971Collecting in South Dakota: Rocks and Minerals, v. 46, no. 12, p. 784-785.
1416Hodges, K.1972Wyoming's Storehouse of Agate: Lapidary Journal, v. 26, no. 9, p. 1360-1364. Algae Agate, Delaney=s Rim Agate, Oolite Agate.
1417Hodson, G. K.1950Opal mines and mining in Nevada: The Mineralogist, v. 18, no. 4, p. 171-179, 198, 200, 202, 204.
1418Hodson, G. K.1961Opal Mining at Virgin Valley: Lapidary Journal, v. 15, no. 5, p. 530-537.
1419Hoefs, J.1973Stable isotope geochemistry: Berlin, Heidelberg, New York. NFI, rkp
1420Hoelcek, M. K.1976Some classical derivations in minneral nomenclature: Lapidary Journal, v. xx, no. 77, p. 1756-1764.
1421Hoersch, A. L.1981Progressive metamorphism of the chert-bearing Durness Limestone in the Beinn and Dubhaich Aureole, Isle of Skye, Scotland: A reexamination. American Mineralogist, v. 66, no. xx, p. 491-506.
1422Hoffeld, H., MD1977"Opalite" an article concerning its treatment and pathogenesis: Lapidary Journal, v. 31, no. 4, p. 1010-1012. Lapidary
1423Hoffman, S.1942Untersuchungen uber den Opalgehalt der Achate: Neues Jahrbuch Mineralogie, Geologie, Palaontologie. Abh Beil.-Bd, Abt. A, v. 77, no. xx, p. 238-276.
1424Hoffman, S. N.1971Jahrbuch Mineralogie. 77, no. a, p. 238-276.
1425Hoffmann-Rothe, R.2002Die Achate vom Finkenberg in Idar: Lapis, v. 27, no. 2, p. 13 - 17.
1426Hofmann, B. A.1999Moss agate and other filamentous mineral aggregates: fossil record of the subsurface biosphere [abstract]: in European Union of Geosciences Conference Abstracts: EUG 10, Journal of Conference Abstracts, v. 4, no. 1, p. 253
1427Holgate, N.1954The role of liquid immiscibility in igneous petrogenesis: Journal of Geology, v. 62, no. xx, p. 439-480.
1428Holgate, N.1956The role of liquid immiscibility in ignerou petrogenesis: a reply. Journal of Geology, v. 64, no. xx, p. 89-93.
1429Holler, H.1962Untersuchungen an den Hohlramauskleidungen des Weitendorfer Basalts: Anz. Osterreich Akad. Wissenschaft, Math.-naturwissenschaft. Kl., v. 99, p. 145-148.
1430Holler, H.1968Experimentelle Bildung von SiO2-Mineralien aus naturalichen Silikaten und silikatschen Gesteinen bei 180oC: Contributions Mineralogy and Petrology, v. 17, no. xx, p. 187-203.
1431Hollingsworth, H. W.1964Solidly filled agatized coral found in new Florida location: Lapidary Journal, v. 18, no. 7, p. 839.
1432Holst, A. M.1960Prints from agate negatives Gems and Minerals, no. 268, p. 36,38.
1433Holten, T., Jamtveit, B., Meakin, P.1998Self-affine fractal geometry of agate: European Journal of Mineralogy, v. 10, no. 1, p. 149 - 153. (not seen)
1434Holzhey, G.1982Zum Vorkommen von Quarz-Geoden am Felsenschlag bei Gehlberg im Thuringer Wald: Veroffentlichungen des Naturkundemusuems Erfurt, v. 1, p. 63-77
1435Holzhey, G.1985Uber die Verbreitung von Achate in permischen Vulkaniten des Thuringer Waldes: Veroffentlichungen des Naturkundemusuems Erfurt, v. 4, p. 71 - 82.
1436Holzhey, G.1990Porphyrkugeln des Thuringer Waldes aus der Sammlung von K. E. A. von Hoff: Abhandlungen Berliner Musee Natur Gotha, no. 16, 1990, p. 29-36.
1437Holzhey, G.1991Feueropal aus Aleksejewskoje, Kasachische SSR, USSR - ein Beitrag zu vergleichenden gemmologisch-mineralogischen Untersuchungen mikrokristalliner SiO2-Minerale: Zeitschrift der Deutschen Gemmologischen Gesselschaft, Jahrgang 40, Heft 1, April, 1991, p. 11-23.
1438Holzhey, G.1993Vorkommen und Genese der Achate und Parageneseminerale in Rhyolithkugeln aus Rotliegendvulkaniten des Thuringer Waldes: - Dissertation, Technische Universitat Bergakademie Freiberg, Deutschlans, 187 p., 75 figs., 93 plates.
1439Holzhey, G.1994aZur Ausbildung der Randfacies rhyolithischer Rotliegendvulkanite des Thuringer Waldes: Geowissenschaft Mitteilungen von Thuringer, no. 2, 1995, p. 45 - 71.
1440Holzhey, G.1994bZum Mikrogefuge von Achaten aus Rhyolithkugeln des Thuringer Waldes: Veroff Naturkundmuseum Erfurt, 1994, p. 101 - 116.
1441Holzhey, G.1995Herkunft und Akkumulation des SiO2 in Rhyokithkugeln aus Rotliegendvulkaniten des Thuringer Waldes: Geowissenschaft Mitteilungen von Thuringer, no. 3, 1995, p. 31 - 59.
1442Holzhey, G.1996Zur Quarz-Mineralisation in Spharolithen innerhald der Randfacies des Jungeren Oberhofer Quarzporphyrs bei Geraberg im Thuringer Wald: Veroffentlichunger Naturkundemuseum Erfurt, 1996, v. 15, p. 31 - 39.
1443Holzhey, G.1997aOrigin and formation of agate-bearing spherulites: The Thuringian Forest, Germany: Australian Gemmologist, v. 19, p. 452-459.
1444Holzhey, G.1997bQuarz-Mineralsationen in Rhyolithkugeln nahe des Seebachsfelsens sudwestlich Friedrichroda, Thuringer Wald: Zeitschrifft Deutsche Gemmologische Gesselschaft, v. 46, no. 4, p. 197 - 212.
1445Holzhey, G.1997cGitterkonstanten und Kristallgrossen ikrokristalliner Quarze aud Rhyokithkugeln in Rotliegendvulkaniten des Thuringer Waldes. (Lattice Constants and Crystallite Sizes of Micro-crystalline Quartzes in rhyolitic Spherulites of Rotliegent-volcanic Rocks from the Thuringian Forest: Chemie der Erde, v. 57, p. 277-287
1446Holzhey, G.1997dFeueropal von Opal Butte, Oregon, USA: Zeitschrifft Deutsche Gemmologische Gesselschaft, v. 46, no. 3, p.161- 168.
1447Holzhey, G.1998Achate aus Sachsen und Thuringen - Ein Uberblick zu ihren Vorkommen in Gangen und Vulkaniten. (Agates from Saxony and Thuringia - a survey of their occurrences in veins and volcanic rocks.): Zeitschrifft Deutsche Gemmologische Gesselschaft, p. 199-224.
1448Holzhey, G.1999aMikrokristalline SiO2-Mineralisationen in rhyolitischen Rotliegendvulkaniten des Thuringer Waldes (Deutschland) und ihre Genese (Microcrystalline SiO2 Mineralizations Hosted in Rhyolitic Rotliegend-volcanic Rocks from the Thuringian Forest (Germany) and Genetic Implications: Chemie der Erde, v. 59, p. 183-205.
1449Holzhey, G.1999bMicrocrystalline quartz mineralizations (agates) located in the marginal facies of rhyolitic Rotliegend-volcanic rocks from the Thuringian Forest/Germany: Web page at
1450Holzhey, G.2001Contribution to Petrochemical-mineralogical Characterization of Alteratin Processes within Marginal Facies of Rhyolitic Volcanics of Lower Permian Age, Thuringian Forest, Germany: Chemie der Erde, v. 61, p. 149-186.
1451Holzhey, G., and Muller, B.1997Gitterkonstanten und Kristallitgrossen mikrokristalliner Quarze aud Rhyolithkugeln in Rotliegendvulkaniten des Thuringer Waldes: Chemie der Erde, v. 57, p. 277-287.
1452Homan, E.1960Ohio's Unique Gemstones: Lapidary Journal, v. 14, no. 1, p. 54-56. Flint Ridge
1453Honeyman, D. L. C.1880Geological Waifs from the Magdalen Islands: Transactions of the Nova Scotia Institute of Natural Sciences of Halifax, Nova Scotia, v. 5, part II, p. 136-138. Gaspe pebbles.
1454Hopkinson, L., Roberts, S., Herrington, R., and Wilson, J.1998Self organization of submarine hydrothermal siliceous deposits: Evidence from the TAG hydrothermal mound, 26o N, Mid-Atlantic Ridge: Geology, v. 26, no. 4, p. 347 - 350.
1455Hopping, R.1899Catalogue and Price List of Minerals: New York, p. 16.
1456Horak, H., and Horak, M.1976Spencer Opal -- Rip Off! Lapidary Journal, v. 30, no. 2, p. 652-653. ID, FT
1457Horick, P. J.1988Rock and Mineral Collecting: Iowa Geology. 13. p. 16-17.
1458Horn, P.1966Geology and Topography of Alibates Flint Quarry: Lapidary Journal, v. 19, no. 10, p. 1127-1128.
1459Hoss, H.1959Nachtrag zu den Untersuchungen uber die Petrographic kulmischer Kieselschiefer: Beitrage Mineralogie Petrographie, v. 6, no. xx, p. 248-260.
1460Hotson, R.1972"Can this be true?" Lapidary Journal, v. 26, no. 7, p. 1044-1048. Souris Agate
1461Houge, N. L.1964Apache Agate and Tears: Gems and Minerals, no. 326, p. 24 - 25. (Called Apache Creek Agate on Cover), Arizona, New Mexico, Field Trip.
1462Hougen, L.1971Yaquina, Oregon's agate bottomed bay: Gems and Minerals, no. 409, p. 26-28.
1463Hougen, R.1971Yaquina, Oregon's agate bottomed beach: Gems and Minerals, no. 409, p. 26-28.
1464Houghton, D.1841Annual Report of the State Geologist, Michigan: in Fuller, G. H., Ed., Michigan Historical Commission, Lansing, 1928. 700 p.
1465Howard, A. S., and Howe, J.1979Fossiliferous Formations of South Carolina: Rocks and Minerals, v. 54, no. 4, p. 166-172. pet wood
1466Howard, J. M.1987Mineral species of Arkansas, a digest: Arkansas Geological Commission, bull. 23, 182 p.
1467Howard, J. W.1933Agates: Journal of Chemical Education. February, 1933, p. 66-70.
1468Howard, P.1996Agate Creek Agate: The Australian Gemologist, v. 19, no. 5, p. 215-220.
1469Howard, P.1998?Inclusions in agates and Chalcedonys: Australian Gemmologist, v. 19, no. 11, p. 464-465. Queensland,
1470Howard, P.1999Looking at agates through a microscope: Metal Stone & Glass, 2, no. 4, issue 8, August, Spring 1999, p. 16, 17, 24, 25.
1471Howarth, W. E.1939Forms of silica, flint, chert, and beekite: Rocks and Minerals, v. 14, no. 12, p. 378-381.
1472Howe, H. J.1959Montoya Group stratigraphyt (Ordovician) of Trans-Pecos Texas: American Association of Petroleum Geologists Bulletin, v. 43, p. 2285-2332.
1473Howley, J. P.1880List of Newfoundland Minerals: Mineralogical Magazine, v. 4, no. 17, p. 36-41.
1474Hoylek, F. A.1965Lightning Ridge: Gems and Minerals, no. 339, p. xx - yy. Australia, Field Trip, Mining
1475Huang, W. H., and Keller, W. D.1970Dissolution of rock-forming silica minerals in organic acids: simulated first stage of weathering of fresh mineral surfaces: American Mineralogist, v. 55, no. xx, p. 2076-2094.
1476Hubbard, L. L.1895Upper Pensinsula: Geological Survey, Michigan, 1881-1884, v. 5. 64 p.
1477Huber, N. K.1975The Geologic Story of Isle Royale National Park: U. S. Geological Survey Bulletin, 1309, 66 p. Agates, Thunder Eggs in place.
1478Hubert, A. L.1953Rock Hunting in Utah: Lapidary Journal, v. 7, no. 1, p. 36, 38, 40, 42. Blue Valley, just S. of Beaver; Levan Agate, Circle Cliffs, Escalante.
1479Hubert, A. L.1958Hunting Piles of Rocks in Utah: Lapidary Journal, v. 12, no. 1, p. 38, 40, 42. Duck Rock
1480Hudson, S.1980The jasper of Dry Creek, Georgia: Rockhound, v. 9, no. 3, p. 28 - 29.
1481Hudson, S.1982Those Georgia Agates: Lapidary Journal, v. 36, no. 1, p. 158-165. Summerville Agate, River Road Agate, Fitzgerald Agate, Briar Creek Agate, Ringgold Chert, Chattahoochee County Agate, Flint River Jasper, Jefferson County Agate, Warm Springs Agate, Upatoi Creek Agate.
1482Hudson, S.1986Wood Hunt: Lapidary Journal, v. 40, no. 1, p. 42-48. Brazos River Wood, Lake Sam Rayburn Wood, Fire-Engine Jasper.
1483Huett, D. E.1990A Centennial Celebration: Lapidary Journal, v. 44, no. 8, p. 22-30.
1484Huff, L. C.1940Artificial helictites and gypsum flowers: Journal of Geology, v. 48, no. xx, p. 641-659.
1485Huff, , no. Hoff?), W. L.1961The Erwin Goetz Collection: Earth Science, v. 14, no. 5, p. 259-262.
1486Hughes, G.1935aRare Petrified Wood: The Mineralogist. 3, no. 9, p. 21. Newport, Ore., Teredo
1487Hughes, G.1935bThe permanent beauty of agates. The Mineralogist. v. 3, no. 10, p. 18. historical, biblical references
1488Hughes, G.1945Color in Oregon agates: The Mineralogist, v. 13, no. 9, p. 363-365.
1489Hughes, P. W.1952Stratigraphy of Supai Formation, Chino Valley Area, Yavapai county, Arizona: American Association of Petroleum Geologists Bulletin, v. 36, p. 635-657.
1490Hughes, W.1972The care and feeding of Fire Agate--the unfamiliar gemstone: Rock and Gem, v. 2, no. 4, p. 76-78.
1491Hughes, W.1973You can polish fire agate: Rock & Gem, v. 3, no. 5., p. 54-58.
1492Hughes, W.1974Most fire agates are stalagmites: Lapidary Journal, v. 28, no. 9, p. 1418-1421.
1493Hughes, W.1975One theory on the formation of fire agate: Rocks and Minerals, v. 50, no. 1, p. 44.
1494Hughes, W.1977Fire Agates: Rocks and Gems, v. xx, no. yy, p. 70-73.
1495Huizing, M.1977Every days' a field at Flint Ridge: Lapidary Journal, v. 31, no. 2, p. 574-579.
1496Hungerford, E. S.1947A rockhound in Alaska: The Mineralogist, v.15, no. 3, p. 10-16. Kuiu (Pronounced Q-U) blue agate, dk blue, approaches lapis lazuli shades, FT, Farragut Bay area. see USGS bull. 800.
1497Hunt, H.1991Three Decades of Design: Lapidary Journal, v. 45, no. 7, p. 48. Horse Mountain Agate, Tennessee, illustration of carving.
1498Hunt, J., H., Dr.1894Some non-metallic minerals of Mexico: The Mineral Collector, v. 1, no. 1, p. 16.
1499Hunter Joe,1975"The whites of 2 eggs and a cup of rolled oats": Lapidary Journal, v. 29, no. 9, p. 1758-1762. Swanson's Ranch red, gold, lt blue. nom de plume for?????, rkp
1500Hunter, R.1975On the Oregon beaches: Lapidary Journal, v. 29, no. 8, p. 1587-1589.
1501Hunter, R.1976aThe eyes of Texas were upon us: Lapidary Journal, v. 30, no. 1, p. 414-418.
1502Hunter, R.1976bAlong some Utah trails: Lapidary Journal, v. 30, no. 4, p. 1084-1089. Cisco, Kimbride???, check last name of site.
1503Hunter, R.1977East of the sunshine but west of the moon: Lapidary Journal, v. 30, no. 12, p. 2834-2839. AZ, Clifton purple agate.
1504Hunter, R.1979aCalifornia, here we come: Lapidary Journal, v. 33, no. 3, p. 744-750.
1505Hunter, R.1979bOn the weta cons'ta we struck Oelrichs and got a Fairburn: Lapidary Journal, v. 33, no. 6, p. 1410-1415. South Dakota Crazy Lace Agate, South Dakota Nodules=Prairie Agate
1506Hunter, R.1981Fun in the sun: Lapidary Journal, v. 35, no. 4, p. 932-936. Brenda Jasper.
1507Hunter, R.1982From Marmarth to Intake: fiasco to feast. Lapidary Journal, v. 35, no. 11, p. 2234-2245.
1508Huntling, M. T.1942Opal in joint cracks in basalt at Pullman, Washington: The Mineralogist, v. 10, no. 1, p. 9, 10, 25-29.
1509Hurley, F.1944Lightning Ridge - home of the black opal: The Mineralogist, v. 12, no. 8, p. 239-246.
1510Hurley, J. R.1974No wood for burning: Gems and Minerals, no. 437, p. 14, 15. NV, FT
1511Hutchinson, B., and Hutchinson, J.1976Cinderella stones: Lapidary Journal, v. 30, no. 8, p. 1980-1983. BC, Canada.
1512Hutchinson, B.1977aPictures and patterns: Lapidary Journal, v. 30, no. 10, p. 2314-2316. Picture jaspers
1513Hutchinson, B.1977bVancouver Island rockhounding: Lapidary Journal, v. 30, no. 12, p. 2822-2828. FT
1514Hutchinson, J., and Hutchinson, B.1966aRockhounding in British Columbia: Lapidary Journal, v. 20, no. 4, p. Picture Jaspers, Dog Rock?
1515Hutchinson, J., and Hutchinson, B.1966bBeachcombing around southern Vancouver Island: Lapidary Journal, v. 20, no. 7, p. 898-901.
1516Hutchinson, J., and Hutchinson, B.1967Rockhounding in Big British Columbia: Lapidary Journal, v. 20, no. 1, p. 244-251. McGlashan Lake Petrified Wood; Monte Lake Agate.
1517Hutchinson, J., and Hutchinson, B.1970Rockhounding in British Columbia-Dallasite: Lapidary Journal, v. 24, no. 2, p. 376-379.
1518Hutchinson, J., and Hutchinson, B.1971Rockhounding and beachcombing on Vancouver Island: T. & G. Vaulkhard, Victoria, B.C., 55 p.
1519Hyland, B.1959Utilizing Banded Washington Carnelian: Lapidary Journal, v. 13, no. 3, p. 458. Lapidary