 | | Journal (article/letter/editorial) | | 2014 (b. 1948) Artist Jörg Thomas holding the calcite depicted in his painting; he and Andrée Roth-Reimann...Roth-Reimann collected the specimen in the Juchem quarry. Thomas discovered the world of minerals in 2008...2008 when he visited a mineral show in Hamburg, Germany. Andrée Roth-Reimann, who shares Thomas’s life and...in the German Democratic Republic (former East Germany), Thomas graduated from a polytechnical high school...Geracher Wasserschleife house in the Juchem quarry in Niederwörresbach, near Idar Oberstein. Thomas and Roth-Reimann |  | Duarte, Lauren C., Hartmann, Leo A., Ronchi, Luiz H., Berner, Zsolt, Theye, Thomas, Massonne, Hans J. (2011) Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic province. Mineralium Deposita, 46 (3) 239-255 doi:10.1007/s00126-010-0323-6 | Journal (article/letter/editorial) | | Institute of Technology, Adenauerring 20b, Karlsruhe, Germany e-mail: zsolt-attila.berner@kit.edu T. Theye :...Stuttgart, Azenbergstrasse 18, 70174 Stuttgart, Germany T. Theye e-mail: thomas.theye@mineralogie.uni-stuttgart... Paraná, basalt—Juchem et al. 2008; Entre Rios mines, Santa Catarina, basalt—Juchem et al. 2010), and...rhyodacites (e.g., Caxias do Sul—Sirtoli et al. 2005; Juchem et al. 2007, 2008, 2009). Because the geodes occur... including Leinz (1949), Scopel et al. (1998), Juchem (1999), Gomes (1996), Gilg et al. (2003), and Proust |  | Gilg, H. Albert, Krüger, Yves, Taubald, Heinrich, van den Kerkhof, Alfons M., Frenz, Martin, Morteani, Giulio (2014) Mineralisation of amethyst-bearing geodes in Ametista do Sul (Brazil) from low-temperature sedimentary brines: evidence from monophase liquid inclusions and stable isotopes. Mineralium Deposita, 49 (7) 861-877 doi:10.1007/s00126-014-0522-7 | Journal (article/letter/editorial) | | liquid inclusions in colourless quartz, amethyst, calcite, barite and gypsum were analysed by microthermometry...Ingenieurgeologie, TUM, Arcisstr. 21, 80333 Munich, Germany e-mail: agilg@tum.de Y. Krüger : M. Frenz Institut...Universität Tübingen, Wilhelmstrasse 56, 72074 Tübingen, Germany A. M. van den Kerkhof Angewandt Geologie, Universität...Göttingen, Germany G. Morteani Hydroisotop GmbH, Woelkestrasse 9, 85301 Schweitenkirchen, Germany subhedral...subhedral calcite) and IV (barite, late subhedral calcite and gypsum), the oxidation state of the fluid changed |  | Gilg, H. Albert, Morteani, Giulio, Kostitsyn, Yuri, Preinfalk, Christine, Gatter, Istvan, Strieder, Adelir J. (2003) Genesis of amethyst geodes in basaltic rocks of the Serra Geral Formation (Ametista do Sul, Rio Grande do Sul, Brazil): a fluid inclusion, REE, oxygen, carbon, and Sr isotope study on basalt, quartz, and calcite. Mineralium Deposita, 38 (8) 1009-1025 doi:10.1007/s00126-002-0310-7 | Journal (article/letter/editorial) | | carbon, and Sr isotope study on basalt, quartz, and calcite Received: 8 March 2002 / Accepted: 19 June 2002...agate and colorless and finally amethystine quartz. Calcite formed throughout the whole crystallization sequence...München, Lichtenbergstrasse 4. 85747 Garching, Germany E-mail: albert.gilg@geo.tum.de Tel.: +49-89-28913196...Universität München, Frauenlobstr. 7a, 80337 München, Germany I. Gatter Mineralogical Department, Eötvös University...Meunier et al. (1988), Scopel et al. (1998), and Juchem et al. (1999). In contrast, Bossi and Caggiano |  | | Journal (issue) | | agate from the Juchem Quarry, Birkenfeld District, Rhineland-Palatinate, Germany, with calcite and aragonite |  | Hartmann, Léo Afraneo, da Cunha Duarte, Lauren, Massonne, Hans-Joachim, Michelin, Cassiana, Rosenstengel, Leonardo Manara, Bergmann, Magda, Theye, Thomas, Pertille, Juliana, Arena, Karine Rosa, Duarte, Sandro Kucera, Pinto, Viter Magalhães, Barboza, Eduardo Guimarães, Rosa, Maria Luiza C.C., Wildner, Wilson (2012) Sequential opening and filling of cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic province, Brazil and Uruguay. International Geology Review, 54 (1) 1-14 doi:10.1080/00206814.2010.496253 | Journal (article/letter/editorial) | | Mineralogie, Universität Stuttgart, Stuttgart, Germany d Geological Survey of Brazil (CPRM), Rua Banco...Mineralogie, Universität Stuttgart, Stuttgart, Germany; d Geological Survey of Brazil (CPRM), Rua Banco...minerals, particularly the spectacular amethyst, calcite, and gypsum-bearing geodes. Keywords: vesicles;...and has large deposits of amethyst and agate (calcite, gypsum) geodes. Specimen-quality minerals, including...low-temperature process (50◦ C) (see, for example, Juchem (1999), Gilg et al. (2003), Duarte et al. (2009) |  | | Journal (article/letter/editorial) | | N ! If sell fluorescent minerals w e have our calcite and w i l l e m i t e mines. W r i t e wholesale...and green, 35c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 15th St., Los Angeles 13, Calif...chalcedony, a r a g o n i t e , hemimorphite, Texas calcite. Please include postage. M i s sion Curio M a r...chalcedony w i t h uranium salts and f l u orescent calcite crystals 5 0 cents pound. Money refunded if not...lovely m i m e t i t e specimen, 1 f i n e Arizona calcite specimen, 1 chrysocolla specimen, 1 rare scheelite |  | Baggio, Sérgio Benjamin, Hartmann, Léo Afraneo, Lazarov, Marina, Massonne, Hans-Joachim, Opitz, Joachim, Theye, Thomas, Viefhaus, Tillmann (2018) Origin of native copper in the Paraná volcanic province, Brazil, integrating Cu stable isotopes in a multi-analytical approach. Mineralium Deposita, 53 (3) 417-434 doi:10.1007/s00126-017-0748-2 | Journal (article/letter/editorial) | | / Accepted: 31 May 2017 # Springer-Verlag GmbH Germany 2017 Abstract Different hypotheses exist on the...Universität Hannover, Hannover, Germany 3 Universität Stuttgart, Stuttgart, Germany Keywords Paraná volcanic...quarries: (1) quarry 86, in the town of Dom Pedro de Alcântara; (2) Brasília-Guaíba quarry, in the town...town of Bom Princípio; and (3) David Basso quarry, in the town of Taquaruçu do Sul (Fig. 2a). In the Santo...Ludgero (drill core at 92 m depth). In the Rebelatto quarry (Fig. 2c), in Palma Sola town, a large amount of |  | Hartmann, L.A., Medeiros, J.T.N., Baggio, S.B., Antunes, L.M. (2015) Controls on prolate and oblate geode geometries in the Veia Alta basalt flow, largest world producer of amethyst, Paraná volcanic province, Brazil. Ore Geology Reviews, 66. 243-251 doi:10.1016/j.oregeorev.2014.11.005 | Journal (article/letter/editorial) | | detailed by Duarte et al. (2014) in basalt hosts and Juchem (2014) in rhyodacites. We selected three mines... Gilg et al., 2003, 2014; Duarte et al., 2011; Juchem, 1999; Gilg et al., 2003). Magmatic cavities formed...valuable silica minerals, particularly amethyst, plus calcite and selenite. 6. Conclusions There is a direct...ameth = amethyst, mc cr = micro-crack, calc = calcite, gyp = gypsum, and feed ch = feeding channel. Fig...Duarte, L.C., Hartmann, L.A., Medeiros, J.T.N., Juchem, P.L., 2014. Hydrothermal-epigenetic origin of |  | | Journal (issue) | | (2008) Joseph & Lorraine Polityka (2009) “Skunk” calcite: mineral paragenesis in an amethyst geode From...quarries close to Bart’s home. On the road to the quarry John found what turned out to be a beautiful specimen...and would ride his bicycle to the Hammond Street quarry, in Brookline, Massachusetts, the Emery mine in...Chester, Massachusetts, and even to the Strickland quarry in Portland, Connecticut, over 50 miles away. After...subject to a 19.5% buyer’s premium. 16469 “Skunk” Calcite Mineral Paragenesis in an Amethyst Geode from |  | Baggio, S.B., Hartmann, L.A., Andrade, R.H.P., Rizzotto, G.J., Duarte, S.K., Knijnik, D.B., Simões-Neto, J.A. (2015) Basalt stratigraphy and silica gossans in Campo Grande and Serra de Maracaju, Mato Grosso do Sul, Paraná Volcanic Province. Ore Geology Reviews, 69. 73-87 doi:10.1016/j.oregeorev.2015.01.015 | Journal (article/letter/editorial) | | province, strongly indicating the presence of calcite, amethyst and agate geode deposits along with native...hydrothermal fluids producing voluminous secondary calcite infillings in the amygdales IP and fractures...Sul in Brazil and Los D Catalanes in Uruguay (Juchem et al., 2010; Silva, 2010). Native copper mineralization...The deposits are either silica minerals (also calcite) or native NU copper. The origin of silica is...Inferninho, rampa do Ernesto, São Luiz NU quarry, Campo Grande quarry (inactive, located in the São Francisco |  | | Journal (article/letter/editorial) | | fluorescent specimens and crystal specimens of calcite, amethyst, stilbite, h e u landite, quartz, pyrite...g m a n , A r i z . , and D a r w i n , Calif. Calcite f r o m Texas ( p i n k or y e l l o w f l u o...Pink fluorescent calcite, $ 1 . 0 0 per pound and " f l a m e " fluorescent calcite, $ 1 . 2 5 per p...Immediate d e l i very; fine, snowhite fire-red flur. Calcite w i t h f r a n k l i n i t e , red and green w...- 4 lbs. $ 2 . 0 0 . Same as above, but black calcite $ 1 . 2 5 . W i l l e m i t e Franklinite combo |  | | Journal (article/letter/editorial) | | and green, 35c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 15th St., Los Angeles 13, Calif...chalcedony, a r a g o n i t e , hemimorphite, Texas calcite. Please include postage. M i s sion Curio M a r...chalcedony w i t h uranium salts and f l u orescent calcite crystals 50 cents pound. Money refunded if not...beautiful molybdenite specimen, 1 fine fluorescent calcite specimen, 1 beautiful velvet malachite specimen...sizes — $ 1 . 0 0 - $ 3 . 0 0 . Flow Stone and Calcite Crystals f r o m Gebhard Cave R. VEENFLIET Schoharie |  | | Journal (article/letter/editorial) | | Washington. Send your Cashmere, EXCHANGE: Rare xled calcite specimens w i t h brilliant pink fluorescence under...amythyst, quartz, black tourmaline, garnet and calcite for c u t t i n g and polishing materials. Dr....and green, 3 5 c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 1 5 t h St., Los Angeles 13, Calif...chalcedony, a r a g o n i t e , hemimorphite, Texas calcite. Please include postage. M i s sion Curio M a r...chalcedony w t f h uranium salts and fluorescent calcite crystals 5 0 cents pound. Money refunded if not |  | | Journal (article/letter/editorial) | | Send your Cashmere, E X C H A N G E : Rare xled calcite specimens w i t h brilliant pink fluorescence under...and green, 35c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 15th St., Los Angeles 13, Calif...chalcedony, a r a g o n i t e , hemimorphite, Texas calcite. Please include postage. M i s sion Curio M a r...chalcedony w i t h uranium salts and f l u orescent calcite crystals 50 cents pound. Money refunded if not... Jaffe's Mineral & Lapidary Supply Co. . . 323 Juchem Brothers 320 Kane Lapidary & Supply Keys, B. J |  | | Journal (article/letter/editorial) | | Kingman, A r i z . , and D a r w i n , Calif. Calcite f r o m Texas ( p i n k or y e l l o w f l u o...Pink fluorescent calcite, $ 1 . 0 0 per pound and " f l a m e " fluorescent calcite, $ 1 . 2 5 per pound...S — From famous Oxford County. Fibrous v e i n calcite, tourmaline, spodumene, lepidolite, beryl, roae...and green, 35c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 5th St., Los Angeles 13, Calif...not just fluorescent in spots. T h e w h i t e calcite fluoresces a bright blood red t h r o u g h out |  | | Journal (article/letter/editorial) | | zeolites (heulandite and clinoptilonite), quartz, and calcite, typical of a low-T (100–150°C) hydrothermal alteration...been either recombined or removed. Quartz and calcite are common in all alteration stages throughout...the end of the ore-forming process, e.g. quartz–calcite veins with native copper. Quartz is not present...present in amygdules with native copper, whereas calcite is found dominantly as post-zeolite deposition infillings...associated with clay minerals, zeolite, quartz, and calcite. In the upper crust, it is additionally associated |  | | Journal (article/letter/editorial) | | green, 3 5 c each. Prompt handling o f orders. Juchem Bros., 3 1 5 W . 5 t h St., Los Angeles 13, Calif...chalcedony w i t h uranium salts and f l u orescent calcite crystals 50 cents pound. Money refunded if not...Lapidary Supply Co. . . 435 Swoboda, Edward R 426 Juchem Brothers 432 Kane Lapidary & Supply 429 Sylvester's |  | | Journal (article/letter/editorial) | | chalcedony w i t h uranium salts and f l u orescent calcite crystals 5 0 cents pound. Money refunded if not...and green, 35c each. Prompt handling of orders. Juchem Bros., 315 W . 5th St., Los Angeles 13, Calif....E. M Hill, V. D Humphreys, Paul Inglesby, A. L Juchem Brothers Kane Lapidary & Supply Keys, B. J Lapidary |  | | Journal (issue) | | Verhaltensmaßregeln für das Sammeln im Steinbruch Juchem im Fischbachtal 8 Rätselecke . . . . Tauschecke...Verhaltensmaßregeln für das Sammeln im Steinbruch Juchem im Fischbachtal Im gleichen Maße, wie die Fundmöglichkeiten...Während des Sommers stehen allein vor dem Steinbruch Juchem allabendlich ca. 80- 100 Sammler, die auf das Zeichen...benutzen ist der Parkplatz gegenüber dem Steinbruch Juchem. Aufstel lung in geordneter Reihe , damit möglichst...den „Mineralien-Eddi" auf dem Camping-Platz Niederwörresbach. Er ist dort während der Woche tagsüber zu |  | Renac, Christophe, Kyser, Kurtis, Bowden, Peter, Moine, Bertrand, Cottin, Jean-Yves (2010) Hydrothermal fluid interaction in basaltic lava units, Kerguelen Archipelago (SW Indian Ocean) European Journal of Mineralogy, 22 (2) 215-234 doi:10.1127/0935-1221/2009/0022-1993 | Journal (article/letter/editorial) | | carbonate minerals, including zeolites, hydrothermal calcite, dolomite and magnesite, as well as celadonite...et al., 1987; Götze et al., 2001; Harris, 1989; Juchem, 1999). However, mineralogical and chemical changes...trace elements of purified magnesite, dolomite and calcite were measured with a Finnigan Element ICP mass...done using CO2 liberated at 25 and 50 C from calcite, dolomite and magnesite reacted with 100 % H3PO4...oxygen fractionation factors between CO2 and H3PO4 (calcite, Friedman & O’Neil, 1977; dolomite, Rosenbaum & |  | | Journal (issue) | | forms of one mineral. We devoted one meeting to calcite, looking at many specimens and discussing these...Cuboctahedron with small cubic faces, from Juchem Quarry, Germany. Remco van Royen collection, Auke Bleeker...trapezohedrons from the Clara Mine, Oberwolfach, Germany. FOV=2.2mm W. Gunter collection Eddy Van Der Meersche...the Clara Mine, Oberwolfach, Baden-Wurttemberg , Germany. E. Van Der Meersche collection and photo. To...clear modified hexoctahedrons from the Clara Mine, Germany FOV=4mm (see fig. 24 for the correspondIng crystal |  | | Journal (article/letter/editorial) | | Peru兲, and quartz 共sample 5—white chalcedony from Germany兲. II. EXPERIMENTAL A. Opal samples About 75 samples...sepiolite, palygorskite, clay minerals, quartz, calcite, and gypsum. Regarding to palygorskite, this mineral...sepiolite, clay s.l., ␣ quartz, and, in few cases, calcite and gypsum were identified. Concerning the amorphous...progressively more ordered during the diagenetic process 共Juchem et al., 2004; Lynne and Campbell, 2004兲. According...the characterisation of the opals. Conversely, calcite occurs only in trace and cannot be used for the |  | | Journal (issue) | | Farbe des Himmels, Christian Weise Verlag, Munich, Germany, pp. 76–81. Antoine P-O., Duranthon F., Tassy P...Fischer G. (1819) Essay on the turquoise and the calcite. In T. Thomson, Ed., Annals of Philosophy, Vol...second most important carbonate mineral after calcite. Although dolomite is sometimes used as an ornamental...radiation. Blue color in carbonate minerals (i.e., calcite) that contain twinning and dislocations is thought...“Relationship between blue color and radiation damage in calcite,” Radiation Effects, Vol. 76, 1983, pp. 187–191 |  | | Journal (article/letter/editorial) | | and green, 35c each. Prompt handling of orders. Juchem Bros., 3 1 5 W . 15th St., Los Angeles 13, Calif...chalcedony, a r a g o n i t e , hemimorphite, Texas calcite. Please include postage. M i s sion Curio Mart...FLUORESCENTS FOR C U T T I N G . Beautiful w h i t e calcite w i t h black f r a n k l i n i t e and b r o w...chalcedony w i t h uranium salts and f l u orescent calcite crystals 50 cents pound. M o n e y refunded i f...e chalcedony-chert nodules good polishers and calcite géodes green fluorescent, 6 lbs. $ 2 . 0 0 . Small |
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Juchem Quarry, Niederwörresbach, Herrstein-Rhaunen, Birkenfeld, Rhineland-Palatinate, Germany