 | | Book | | collectors and often used as decorative items. Basalt is the most abundant volcanic rock on Earth’s surface...rock, created when hot gases were trapped in the basalt lava as it a specimen. The minerals may have grown...solidify into an extrusive igneous rock such as basalt. Magma may also solidify very slowly beneath Earth’s...cosmetics, or as sources of color for ceramic glazes. Hematite and other iron oxides create reds and browns,...different optical properties. The play of colors on hematite comes from very thin surface layers similar to |  | | Journal (article/letter/editorial) | | OF THE LAHN SYNCLINE. VI. By Professor Franz Michels VII. X. 31 THE SIEBENGEBlRGE. By Professor...At the base we find one or more horizons with hematite deposits followed by marls and calcareous mudstones...grey-blue to yellow colour. It is exposed in numerous quarries because it makes good road metal. Its thickness...diabase-tuffs become green-schists, acid 30 FRANZ MICHELS, eruptive rocks are transformed to sericite-gneiss...THE WESTERN PART OF THE LAHN SYNCLINE. By FRANZ MICHELS. Between the Lower Devonian of the Taunus and |  | | Journal (issue) | | Durango, Mexico (Farrington, 1900); Nazenbach, West Germany (Schneider, 1887); Rendaiji, Japan (Takasu, 1955);...resembles the habit of crystals from Nanzenbach, West Germany; Langban, Sweden; and Durango, Mexico (Ryall and...NanzenHill Langban Durango bach Rendaiji Sweden Mexico Germany Japan Austral. X X X X X X X X X X X X X X...orfolk, M A Burt & T helm a Kirsch Oceanside, NY Quarry Enterprises Williams Minerals A udray Lapham...your old Danas) just east of the Rhine city of Koblenz. As my wife and I set out from Kaiserslautern, |  | Środoń, Jan, Kuzmenkova, Oksana, Stanek, Jan J., Petit, Sabine, Beaufort, Daniel, Albert Gilg, H., Liivamägi, Sirle, Goryl, Magdalena, Marynowski, Leszek, Szczerba, Marek (2019) Hydrothermal alteration of the Ediacaran Volyn-Brest volcanics on the western margin of the East European Craton. Precambrian Research, 325. 217-235 doi:10.1016/j.precamres.2019.02.015 | Journal (article/letter/editorial) | | Geology, Technical University of Munich, Munich, Germany of Silesia, Faculty of Earth Sciences, Sosnowiec...cooling basalt, and the Caledonian and/or Variscan potassic alteration. The degree of basalt alteration...of the basalt flows in an oxidizing environment, evidenced by the increasing amount of hematite and Fe3+/Fe2+...quartz as the earliest petrographically identifiable basalt alteration product was found to vary systematically...Mg enrichment are indicative of the hydrothermal basalt alteration process, which perhaps was dominant |  | | Journal (article/letter/editorial) | | feldspars,enstatite,severalsulphates,cassiterite, hematite,and sphaleritewere reported,in the range500-600ø...the•orm of isometricsfrom data by Michels and Michels (64) and Michels, Michels, and Wouters (65), are shownin...Physik, 130, 196-201, 1951. 63. Michels, A., Bijl, A., and Michels, C.: Thermodynamicpropertiesof CO...Proc. Roy. Soc. London, A160, 376-384, 1937. 64. Michels,A., andMichels,C.i Isotherms of COo between 0ø...Soc. London, A153, 201-214, 1936. 65. Michels, A., Michels, C., and Wouters, H.: Isotherms of CO2 between |  | | Journal (article/letter/editorial) | | hypersaline brinedescends, promotinglate-stage hematite in type 2 veins.The easternSaltonSeageothermal...zone, rock fragments containing porous epidote-hematite-pyrite vein assemblages were ejected from the...thin disseminated areasof carbonate,silicate, hematite, and pyrite sometimes surround veins. Transmitted-...cpy = chalcopyrite,ep = epidote,gn = galena,hm = hematite,po = pyrrhotite,py = pyrite,sph= sphalerite, spn=...High Pyrrhotite Higher than presenttemperature Hematite Fluid inclusiontemperatures Wall-rock Minimal: |  | | Journal (article/letter/editorial) | | ) wolframite, cassiterite and quartz from St. Michels Mount and Cligga head, Corwall, England. - Geochim... (1999): Fluid inclusion studies in cogenetic hematite, hausmannite, and gangue minerals from high-grade |  | Bonnetti, Christophe, Zhou, Lingli, Riegler, Thomas, Brugger, Joël, Fairclough, Martin (2020) Large S isotope and trace element fractionations in pyrite of uranium roll front systems result from internally-driven biogeochemical cycle. Geochimica et Cosmochimica Acta, 282. 113-132 doi:10.1016/j.gca.2020.05.019 | Journal (article/letter/editorial) | | quadrupole ICP-MS (Thermo Scientific, Bremen, Germany). The ICP-MS operated with a plasma power between...sandstone, ore-stage pyrites were oxidized into hematite or limonite by fresh batches of oxygenated groundwater... 297-315. Bonnetti C., Cuney M., Malartre F., Michels R. and Liu X. (2015a) The Uranium Metallogenic...Nancy, France. Bonnetti C., Cuney M., Malartre F., Michels R., Liu X. and Peng Y. (2015b) The Nuheting deposit...Geol. Rev. 69, 118-139. Bonnetti C., Cuney M., Michels R., Truche L., Malartre F., Liu X. and Yang J. |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...them received training abroad, particularly in Germany where formal crys tallography, chemical crystallography...Polytechnique in Paris; Leonhard Sohncke of Karlsruhe, Germany, discussed crystal structure two score years before...systematic exploration, and opened the Antandrokomby quarries and mines in the Sahatany Valley where superb...Julius Petch organization of Idar-Oberstein, West Germany. Petch operated the mine for a num ber of years |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Ariesheim...Schlosstrasse 6 D-8050 Haindlfing-Freising West Germany yhe Mineralogical Museum at Marburg is housed...university town of Marburg is situated in central Germany ipproximately 90 km north of Frankfurt. The museum...cm, from Grube Friedrichssegen, Bad Ems, West Germany. Photo by Rainer Bode. Figure 4. The former granary...Livorno, Italy F W twothousand years, the marble quarries near Carrara have yielded superb white marble |  | | Journal (article/letter/editorial) | | protoliths such as oxidized pelite or altered marine basalt, are not enriched in U. To explore the reason of...pelite, more oxidized pelite, and altered oceanic basalt. Special focuses were paid on (i) the fluid mobility...from the Damara Orogen [15], and an altered marine basalt from Pito Deep [16]. Table 1. Bulk compositions...Al2 O3 MgO FeO Fe2 O3 CaO Na2 O Altered Oceanic Basalt Average Pelite Oxidized Pelite 51.98 14.80 7...bufferedby byaltered alteredoceanic oceanicbasalt. basalt.(a) (a)P-T P-T pseudosection showing mineral assemblage |  | Castillo-Oliver, Montgarri, Melgarejo, Joan Carles, Torró, Lisard, Villanova-de-Benavent, Cristina, Campeny, Marc, Díaz-Acha, Yael, Amores-Casals, Sandra, Xu, Jingyao, Proenza, Joaquin, Tauler, Esperança (2019) Sandstone-Hosted Uranium Deposits as a Possible Source for Critical Elements: The Eureka Mine Case, Castell-Estaó, Catalonia. Minerals, 10 (1) 34 doi:10.3390/min10010034 | Journal (article/letter/editorial) | | diagenetic components (quartz and calcite, micas, hematite and locally apatite) were replaced by a complex...Al 2O3 (Al, TAP, Kα), diopside (Si, TAP, Kα), hematite (Fe, LIF, Kα), barite (Ba, LIF, Lα), uraninite...Al2 O3 (Al, TAP, Kα), diopside (Si, TAP, Kα), hematite (Fe, LIF, Kα), barite (Ba, LIF, Lα), uraninite...colour to The cement sequence 15–30 continues with hematite, metapelites 5.2. Diagenetic Stage Clays (illite)...beds (Qtz1) cemented by hematite (Hem) and calcite beds (Qtz1) cemented by hematite (Hem) and calcite (Cal) |  | | Journal (article/letter/editorial) | | waters of the rock, with concomitantremoval of hematite cement and solution and recrystallization of calcite...vol. VI, Longroans, Green and Co., London. 17. Michels, A., and Miehels, Mrs. C., 1935, Isotherms of COa...Set. A, vol. 154, p. 201-214. 18. Miehels, A., Michels, Mrs. C., and Wouters, H., 1935, Isotherms of COs |  | Rallakis, Dimitrios, Michels, Raymond, Brouand, Marc, Parize, Olivier, Cathelineau, Michel (2019) The Role of Organic Matter on Uranium Precipitation in Zoovch Ovoo, Mongolia. Minerals, 9 (5) 310 doi:10.3390/min9050310 | Journal (article/letter/editorial) | | Ovoo, Mongolia Dimitrios Rallakis 1 , Raymond Michels 1, *, Marc Brouand 2 , Olivier Parize 2 and Michel...A.S & Cosoftware (Version 2008, GmbH, Munich, Germany). 3.1.4. In Situ Analysis The electron probe micro-analysis...alloys (orthoclase, albite, MnTiO3 , wollastonite, hematite and olivine). The analytical conditions were:...Tornado instrument (Bruker Nano GmbH, Berlin, Germany). The system has a Rh X-ray tube with a Be side...Springer International Publishing AG: Berlin, Germany, 2016; 13p. [CrossRef] Nakashima, S. Complexation |  | | Conference Proceedings (Volume) | | the Yubileynoye VMS deposit at the Early Devonian basalt-boninite basement of west Magnitogorsk Arc, the...Bonnetti, Michel Cuney, Fabrice Malartre, Raymond Michels, Sylvain Bourlange, Xiaodong Liu, Yunbiao Peng...(Sweden) Andreï Lecomte, Michel Cathelineau, Raymond Michels & Marc Brouand The mantle-crustal ore-forming...Li-Sn-W-Rb-Cs deposit Zinnwald, eastern Erzgebirge, Germany . . ...................... 1734 ..............Voytekhovsky Y. Genesis of pencil clay deposits in Germany H. Albert Gilg & Martin Schwangler Diversity of |  | | Journal (article/letter/editorial) | | collecting the water, satisfacto.y on Account of tbe hematite having only a small ployed. Tbis invention has...simple appliance, and I cannot wbereas, i f pure hematite is used, the result should be a too strongly recommend...double cushion tbat insures a tight fit. a JOHN MICHELS. .. ..... As a general proposition, says the |  | Rong, Hui, Jiao, Yangquan, Wu, Liqun, Wan, Dun, Cui, Zhengjie, Guo, Xujie, Jia, Junmin (2019) Origin of the carbonaceous debris and its implication for mineralization within the Qianjiadian uranium deposit, southern Songliao Basin. Ore Geology Reviews, 107. 336-352 doi:10.1016/j.oregeorev.2019.02.036 | Journal (article/letter/editorial) | | and yellow sandstones are both characterized by hematite and goethite (Fig. 5; Rong, 2014). The non-mineralized...of the non-mineralized grey sandstones include hematite, ankerite, sphalerite and galena (Fig. 5; Rong...Geology 31, 1061–1064. Bonnetti, C., Cuney, M., Michels, R., Truche, L., Malartre, F., Liu, X., Yang, J...1059–1081. Bonnetti, C., Liu, X., Yan, Z., Cuney, M., Michels, R., Malartre, F., Mercadier, J., Cai, J., 2017...Reviews 8, 247–276. Sangély, L., Chaussidon, M., Michels, R., Brouand, M., Cuney, M., Huault,V., Landais |  | Bonnetti, Christophe, Liu, Xiaodong, Mercadier, Julien, Cuney, Michel, Deloule, Etienne, Villeneuve, Johan, Liu, Wenquan (2018) The genesis of granite-related hydrothermal uranium deposits in the Xiazhuang and Zhuguang ore fields, North Guangdong Province, SE China: Insights from mineralogical, trace elements and U-Pb isotopes signatures of the U mineralisation. Ore Geology Reviews, 92. 588-612 doi:10.1016/j.oregeorev.2017.12.010 | Journal (article/letter/editorial) | | GeoLas Pro ArF Excimer laser (Microlas®, Göttingen, Germany) equipped with beam homogenisation optics. Ablation...such as hydrothermal muscovite and K-feldspar, hematite, apatite and aluminumphosphate-sulphate minerals...associated with quartz, fluorite, calcite, pyrite and hematite. Mineral succession shows centripetal evolution...cemented by microcrystalline quartz associated with hematite (Figs. 5G and 5H). In the Xiwang deposit, the...fluorite; all cemented by calcite associated with hematite. In sample XXW3, the mineralisation is slightly |  | | Journal (article/letter/editorial) | | hydrothermal vein-type deposit: The Clara mine, SW Germany, as a type example—Gregor Markl, Maximilian F....Zoovch Ovoo, Mongolia—Dimitrios Rallakis, Raymond Michels, Marc Brouand, Olivier Parize, and Michel Cathelineau...9, No. 7, 2019 Copper-arsenic nanoparticles in hematite: Fingerprinting fluidmineral interaction—Max R |  | STELZNER, TH., HEIDE, K., BISCHOFF, A., WEBER, D., SCHERER, P., SCHULTZ, L., HAPPEL, M., SCHRÖN, W., NEUPERT, U., MICHEL, R., CLAYTON, R. N., MAYEDA, T. K., BONANI, G., HAIDAS, I., IVY-OCHS, S., SUTER, M. (1999) An interdisciplinary study of weathering effects in ordinary chondrites from the Acfer region, Algeria. Meteoritics & Planetary Science, 34 (5) 787-794 doi:10.1111/j.1945-5100.1999.tb01391.x | Journal (article/letter/editorial) | | SCHULTZ3, M. HAPPEL4, W. SCHRON4, U. NEUPERTS, R. MICHELS, R. N. CLAYTON6, T. K. MAYEDA6, G. BONANI7, I....07749 Jena, Germany 2Institut f i r Planetologie, Wilhelm-Klemm-StraRe 10,48 149 Munster, Germany 3Max-Planck-Institut...Abteilung Kosmochemie, Postfach 3060,55020 Mainz, Germany 4Institut fur Anorganische und Analytische Chemie...Friedrich-Schiller-Universitat,LessingstraRe 8, 07743 Jena, Germany SZentrum fur Strahlenschutz und Radiookologie,...Hannover, Am Kleinen Felde 30,301 67 Hannover, Germany 6Enrico Fermi Institute, University of Chicago |  | Yang, Dong-Guang, Wu, Jian-Hua, Nie, Feng-Jun, Bonnetti, Christophe, Xia, Fei, Yan, Zhao-Bin, Cai, Jian-Fang, Wang, Chang-Dong, Wang, Hai-Tao (2020) Petrogenetic Constraints of Early Cenozoic Mafic Rocks in the Southwest Songliao Basin, NE China: Implications for the Genesis of Sandstone-Hosted Qianjiadian Uranium Deposits. Minerals, 10 (11) 1014 doi:10.3390/min10111014 | Journal (article/letter/editorial) | | anomalies, which are similar to oceanic island basalt 8b), (OIB) (Figurethe 8b),TB positive anomalies...anomalies, which are similar to oceanic island basalt (OIB) (Figure whereas whereas the TB lower samples display...enriched mid-oceanic mid-oceanic ridge basalt (E-MORB). ridge basalt (E-MORB). Minerals 2020, 10, 1014...frequently BSE, bulk mid-oceanridge ridgebasalt. basalt. fields ofabove the above reservoirs are bulksilicate...have significantly modified the composition of basalt and, thus, hamper our interpretation the mantle |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...come. In fact, the article in this issue on D uff quarry pyrite would probably not otherwise have been pub...complex habits have been col lected at the Duff quarry in Logan County, Ohio, for more than ten years...collectors alike. Pyrite crystals from the D uff quarry rarely exceed 5 mm across, and the larger ones...crystals are indeed pyrite. GEOLOGY The C. E. D uff quarry is located on Route 117 approximately 2 kilometers |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim..................100 by W. E. Wilson Notes from Germany .................................................9-ll:15/Noon-5:30 (Closed Sun.) (602) 294-0143 Michels Minerals Harold & Wilma Michel 1030 W. Tenth Street...area, 8 miles SE of Huntington Lake. Feldspar, hematite, quartz (smoky), spessartine. Shaver Lake amethyst...brewsterite, edingtonite. Laytonville quarry [also known as Shamrock Ranch quarry]—5 miles south of Laytonville |  | | Report (chapter) | | History Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany 2 Géosciences Environnement Toulouse (GET),...Wilhelms-Universität, Corrensstrasse 24, D-48149 Münster, Germany *Corresponding author (e-mail: dr.sandra.kaiser@gmail...classic pelagic successions of the Rhenish Massif (Germany) and the neritic successions of the Ardennes Shelf...The richest DCB ammonoid faunas are known from Germany, Poland, Morocco and South China. The Russian post-crisis...widely separate regions of the Rhenish Massif (e.g. Michels 1986) and South China (Yuan & Xiang 1998). The |  | | Book | | spanning thousands of miles moved obsidian from quarry and primary production areas to far distant groups...Professor of Chemistry at the University of Dorpat in Germany. On the basis of a comparison of the compositio...stratigraphic columns excavated within obsidian quarry-workshop areas. Another supplementary technique...their quarrying. Assuming that obsidian found at a quarry site or flow has no chemical variation, the intraflow...hydration rates have been r~ported more recently by Michels and Bebrich, 4 Suzuki 5 and Layton. 11 The Chemical |
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