 | | Journal (article/letter/editorial) | | Macrocrystalline and Microcrystalline Quartz in Agate Using Thermogravimetry-Mass-Spectrometry Julia Richter-Feig...Mineralogy, Brennhausgasse 14, 09596 Freiberg, Germany; richterjulia1989@gmail.com (J.R.-F.); jens.goetze@mineral...Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany; r.moeckel@hzdr.de Correspondence: richterjulia1989@gmail...macrocrystalline quartz from twelve agate samples were investigated, from Germany (Schlottwitz, St. Egidien, Chemnitz...found. The results indicate a silica source for the agate formation from aqueous solutions but also a possible |  | Götze, J., Tichomirowa, M., Fuchs, H., Pilot, J., Sharp, Z.D. (2001) Geochemistry of agates: a trace element and stable isotope study. Chemical Geology, 175 (3) 523-541 doi:10.1016/s0009-2541(00)00356-9 | Journal (article/letter/editorial) | | Freiberg, Brennhausgasse 14, D-09596 Freiberg, Germany Department of Earth and Planetary Sciences, UniÕersity...Albuquerque, NM 87131, Germany Received 8 January 2000; accepted 5 July 2000 Abstract Agate samples of acidic...analysis to provide information about the process of agate formation and the origin of mineral-forming fluids...of different localities but also within single agate samples Žup to 10‰ for d18 O.. In general, oxygen...quartz incrustations. Variations within single agate samples can be explained either by kinetic effects |  | | Journal (article/letter/editorial) | | Review Mineralogy, Geochemistry and Genesis of Agate—A Review Jens Götze 1, *, Robert Möckel 2 and Yuanming...Bergakademie Freiberg, Brennhausgasse 14, 09599 Freiberg, Germany Helmholtz-Zentrum Dresden-Rossendorf, Hemholtz...Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany; r.moeckel@hzdr.de Department of Geological Sciences...20 November 2020 Abstract: Agate—a spectacular form of SiO2 and a famous gemstone—is...interstitial molecular H2 O and silanol groups. Most agate occurrences worldwide are related to SiO2 -rich |  | | Journal (article/letter/editorial) | | Defect structure and luminescence behaviour of agate resultsof electron paramagnetic resonance (EPR)...Freiberg, Germany 2 Department of Geology, Ruhr-University Bochum, D-44780 Bochum, Germany ABSTRACT...ABSTRACT ] I Samples of agate and quartz incrustations from different parent volcanic rocks of certain world-wide...investigated by EPR, CL and trace element analysis. In all agate samples the following paramagnetic centres were...in quartz of the parent volcanics, are absent in agate. Generally, the abundance of 03 centres (silicon |  | | Book | | fruit of that experience. A previous guide to the agate collection, published in 1899, was not illustrated...and inside of halved agate (sec also fig 92) Front cover: detail of sagcnitic agate from Dun bog (sec also...cover: Blue Hole agate (sec also fig 5 I) Inside frolll and back covers: detail of vein agate from Burn Anne...part, a tantalizing mystery. The popularity of agate has given rise since World War II to an absorbing...the British Isles, and presents a novel theory of agate formation based on old and new information. The |  | | Book | | Yuanming Pan Mineralogy, Geochemistry and Genesis of Agate—A Review Reprinted from: Minerals 2020, 10, 1037.... . . . . 5 Terry Moxon and Galina Palyanova Agate Genesis: A Continuing Enigma Reprinted from: Minerals...Gemological Characteristics and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined...source of the silica required for the growth of agate remains largely unknown. The first known descriptive...exists today. The complex, multi-step process of agate formation is not yet completely understood. The |  | Götze, J., Plötze, M., Tichomirowa, M., Fuchs, H., Pilot, J. (2001) Aluminium in quartz as an indicator of the temperature of formation of agate. Mineralogical Magazine, 65 (3) 407-413 doi:10.1180/002646101300119484 | Journal (article/letter/editorial) | | an indicator of the temperature of formation of agate J. GÖTZE*, M. PLÖTZE{, M. TICHOMIROWA, H. FUCHS...Mineralogy, D-09596 Freiberg, Germany ABSTR ACT An ‘Al-thermometer’ was applied to agate samples of volcanic...to provide information about the temperature of agate formation. The temperatures were calculated from...resonance (EPR) measurements. The calculations for agate bands in some cases yield temperatures of up to...for associated quartz incrustations within the agate geodes are in good accord with those calculated |  | | Journal (article/letter/editorial) | | June 2009 U-Pb ages of ferberite, chalcedony, agate, ‘U-mica’ and pitchblende: constraints on the mineralization...Geowissenschaften, Wilhelmstr. 56, D-72074 Tübingen, Germany *Corresponding author, e-mail: markl@uni-tuebingen...Geoforschungszentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany Abstract: This study deals with the use of new...mineralizations in the Schwarzwald region of southwest Germany. In detail, we present new U-Pb age data of ferberite...Clara Mine), chalcedony (from Silberbrünnle Mine), agate (Geisberg), carneol (‘‘Markgräfler Land’’), and |  | | Book | | Institut für Mineralogie, TU Bergakademie Freiberg Germany Editorial Office MDPI St. Alban-Anlage 66 4052...Macrocrystalline and Microcrystalline Quartz in Agate Using Thermogravimetry-Mass-Spectrometry Reprinted...the Technical University Bergakademie Freiberg (Germany). He graduated in Mineralogy and Geochemistry in...modifications and varieties (e.g., opal, chalcedony, agate, quartz, amethyst). Following the fundamental idea...Mineralogy, TU Bergakademie Freiberg, 09599 Freiberg, Germany; jens.goetze@mineral.tu-freiberg.de Received: 12 |  | | Book | | Institut für Mineralogie, TU Bergakademie Freiberg Germany Editorial Office MDPI St. Alban-Anlage 66 4052...Macrocrystalline and Microcrystalline Quartz in Agate Using Thermogravimetry-Mass-Spectrometry Reprinted...the Technical University Bergakademie Freiberg (Germany). He graduated in Mineralogy and Geochemistry in...modifications and varieties (e.g., opal, chalcedony, agate, quartz, amethyst). Following the fundamental idea...Mineralogy, TU Bergakademie Freiberg, 09599 Freiberg, Germany; jens.goetze@mineral.tu-freiberg.de Received: 12 |  | | Book | | Remigiusz Molenda. Fot. R. Slaboński Front cover photo: Agate, polished. Nowy Kościół, Lower Silesia, Poland....Sląsk, Polska. Fot. 30x60 mm, okaz 320x260xl IO mm. Agate, polished. ~owy Kościół, Lower Silesia, Poland....Manganese and iron dendrites. Solnhofen, Bavaria, Germany. Photo 60xl20 mm, sample 200x100xl5 mm. Historia...limestone in Central and Western Europe (Poland, Germany, Denmark, France and England), it can be also found...was exported through customs chambers to Bohemia, Saxony, Slovakia, Moravia, Silesia and Hungary. Silver |  | | Report (issue) | | p 549.6 A 263 AGATE Physical Properties and Origin BY OLIVER C. FARRINGTON Curator op Geology Archaeology... Early Geological History of Chicago 25 8. Agate 50 9. How 2. 3. . . 10 . . old are Fossils...CHICAGO, U. S. A. ' FORTIFICATION ' ' AGATE. URUGUAY. ARTIFICIALLY COLORED. Field Museum...DEPARTMENT OF GEOLOGY Chicago, 1927 Number Leaflet Agate—Physical 8 Properties and Origin a variety of...made up of a great number of exceedingly thin Agate guished by is As layers which appear as bands |  | | Journal (article/letter/editorial) | | GeoForschungsZentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany Received 17 January 2006; accepted in revised form...opal and chalcedony (Neymark et al., 2000) and agate (Romer and Linnemann, 2004). For hydrothermal deposits...wolframite from quartz–wolframite ore occurrences o Saxony, Germany. Terra Abstr. 5 (Suppl. 1), 442–443. Bookstrom...U., 2004. U–Pb dating the Schlottwitz agateamethyst vein (Erzgebirge, Saxony). Eur. J. Mineral. 16 (Beiheft...e granulites from the Saxon Granulite Massif, Germany. Part II: Geochronology. J. Petrol. 42, 2015–2032 |  | | Journal (article/letter/editorial) | | Geology Section, Seestr. 15, D-18119 Warnemünde, Germany Institute of Geological Science, Baltzerstr. 3...Geology Section, Seestr. 15, D-18119 Warnemünde, Germany. Nägler, Institute of Geological Science, Baltzerstr...G-SE is a barite gangue mineral from Schlottwitz, Erzgebirge, Germany. G-GH and G-WH are barite gangue minerals...Glücksrad and Wolkenhügel in the Harz 71 Mountains, Germany, respectively. Chin-1 is a massive white barite...of the natural barite samples were ground in an agate mortar. About 5 mg of barite powder, 50 mg of Na2CO3 |  | | Journal (volume) | | vorheriger Terminvereinbarung möglich! XIII Lwºwek Agate Summer Crystal Days 16-18 VII 2010, Lwºwek S1�ski...collections and presentations, agate cutting demonstrations !!! Agate from P+dczki. Coll. J. Cybulski...from the Clara mine in the Central Black Forest, Germany. - Chem. Erde 56, 171-176 WALENTA, K.; THEME, Т...Obere Gwanne 51 3713 Reichenbach im Kandertal, Schweiz www.der-strahler.ch ■ Mineгоlien-Welt 4/2010 7...ImMalachit und Brochantit. feld unweit Bunn, Wallis, Schweiz, wo es im Das Mineral wurde nach seinem locus typicus |  | | Report (issue) | | Silesia. First mentioned in 1721, Schlottwitz in the Miiglitztal of Saxony is a more recently discovered...princess from a small duchy in what is now northern Germany. The powers that be across the sea in England were...settled on this rather tall, gangly teenager from Germany. Apparently court counselors of that era did not...Gilg Technische Universitiit Munchen, Munich, Germany W hen it comes to amethyst formation, it would...short prismatic, banded Maissau, Austria Schlottwitz, Germany Thunder Bay, Ontario, Canada Geodes in |  | | Book (volume) | | 114 Spec. 2 1 Heliotrop - 1 1 - 1 . - - Agate, or Achates Spec. 22. fa/per. Jafpis - - -... 23. Siliceous Spec. 24. Obfidian , Iceland Agate Spec. 25. Variolit Spec. 26. Feldjpar Var....and value. lefs glajs flint the Ealt ;n. Saxony, in of oxyd of cobalt , grains come from quantity...fine yellow tranfparent amber, and thofe from Saxony yellowiftf white. The Eaft Indian borax, and...Some and Peru. are foqnd in England, Italy, Germany, Hungary, Bretagne, &c. The brown kind, Rome dc |  | | Journal (issue) | | 2" up to 6"x 6" S0c to $10.00 • - -- • Agate in Idaho. Agate halves up nodules having blue, gray & white...$1.00, $2.00 and $3.00. • - - -• Red and white agate masses from Nevada 2"x 2" and 3"x 3" SOc and 75c...Montana 1 ½"x 1½" SOc up to $3.00 «- - -• Many agate cabochons - all colors SOc to $2.00 «---• Moss...FREAK SIMULATIONS IN AGATE. by Ernest Weulhaas ............ . ..... BLUE AGATE IN WASHINGTON. by C. N...N. Clfnesmtth ............. . ... . .. AGATE - SOME FACTS AND USES. by Peter zoaac ......... ....... |  | | Journal (issue) | | Neufunde von llfeld/Harz Muzo-Quarze aus Sedrun/Schweiz • Peru: Pasto Bueno und Mundo Nuevo • München-Messereport...im Muzo-Habitus vom Uaut Cavorgia bei Sedrun, Schweiz 50 Neue Mineralien 54 Pasto Bueno und Mundo... H.; SLABY, D ; REIMER , W (2008) : Das neue Sächsische Rohstoffkataster der Spat- und Erzvorkornmen...gezeichneten Achaten aus dem bekannten Vorkommen von Schlottwitz stammend, aber im Laufe geologischer Zeiträume...Maxen u.a.), präsentierte das Ehepaar Thomas aus Schlottwitz. Dietrich Mayer brachte interessant gezeichnete |  | | Book | | nomenclature often the authors, of the the and Sard Agate, semi-precious induced the ancients handing down... all, The late exquisite minute line Earl Agate Derby of truly with few a “ Derby commenced...sometimes numerous, the are from globe. Geodes Saxony, Many 8 SILICA. remarkable works of Glyptic...from AGATE, Chalcedony, forms of the Flint-like Massive Varieties. or native earliest Agate, silica...before the Archaic as Christ), variegated tian agate, engraving made that prove countries for of |  | | Book (volume) | | Jasper, 257 4. Common Jasper, 260 5. Agate-Jasper, 263 * Agate, 265 VII. Pitchstcne XVtl TABLE...Ochsenkopf near Schwartzenberg, and Eibenstock in Saxony. Jersey and Guernsey are mentioned as localities...Brazil, Siberia, and Mucla in Asia Mi¬ nor, and Saxony, when heated, exhibits at one extremity positive...mountain-green co¬ lour, in alluvial soil, at Eibenstock in Saxony ; it also occurs at Zinnwakl and Geyer in the same...It * Some varieties, as those from Altenberg in Saxony, are marked with spots of violet-blue, which inclines |  | | Book (volume) | | reserved. H., Hofbuchdruckerei, Cothen-Anhalt (Germany). PRECIOUS The Precious Stones. Precious others...fig. 162. stones cannot such press as the agate and stone chalcedony against the disc are ...hollowed out The vacant. man form the on left Germany with to be have posture greater a window...surfaces producing ground and, having firmly agate employed, grind- kept moistened cuirass, a...a the press not are of edge cylinders. Agate trims the against called bench, able to roughly |  | | Book | | lapidary field. Beginning with a description of agate, he proceeds to an interesting account of the history...ever been written before. Tracing the history of agate from prehistoric days through events of the Bible...growing hobby. Chapters are devoted to the details of agate collecting, the varieties and forms of quartz and...varieties, with favorite location of quartz agate, opal wood — collectors. The petrified gems throughout...information on the rockhound’s favorite gem — the agate. Lelande Quick La Jolla (San Diego), California |  | | Journal (issue) | | Alpinmaterial aus 24 Mineralien-Welt 1/2013 der Schweiz. Insidern ist Walter Luft/Wien aufgrund seiner...Gregoire de Bodinat (Le Regne Mineral 108: 38). Schweiz. Bei „Watzl Minerals" beeindruckten schöne Hämatite...So konnte man u. a. eine von Siegmar Thomas/ Schlottwitz zusammengestellte schöne Kollektion von Achaten...Freisener Höhe, Eckersweiler bei Freisen sowie Schlottwitz für seine Vitrine ausgewählt. Karl Heinz Hohenlüchter...the Königshain granites,northemBohemianMassif,Germany.-IntJoum. Earth Sciences 88, 236-252. HAAI |  | | Book (volume) | | 486 488 488 488 489 CONTENTS Vll PAGE PAGE Agate (Onyx).511 Cat’s-eye . . . . Tiger-eye. . . 491... „ the same, cut ., pale yellow crystals : Saxony 3a. 4. ,, the same, cut . 331, 333 331 333...(Facing p. 512.) AGATE. Fig. a. „ 5. Fortification-agate : Oberstein 512, 513 Onyx-agate : Brazil. 512.... near , from 485 89. Mocha-stone.507 90. Agate-grinding and polishing work¬ Crystalline forms...of ruby and sapphire in Burma and Siam „ . . Agate-grinding workshop . . 489 .519 of Herr August |
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Schlottwitz, Glashütte, Sächsische Schweiz-Osterzgebirge, Saxony, Germany