 | | Report (issue) | | KĂHNE gibt 1938 auf Blatt 4514 Möhnesee (frĂŒher: Arnsberg-Nord) ca. 400 m an, 1936 auf Blatt 4517 Alme 400...dem kleinen Spezialsattel 300 m sĂŒdöstlich der Bilstein-Höhle (R 53 080, H 98 990), aus der isolierten...Anstehend wurden diese Kalksteine nur zwischen Bilstein- und Wester-Bach angetroffen. Hier sind sie verkieselt...Hirschberg zwischen der Flur FĂŒrstenkamp und dem Bilstein-Bachund auf Blatt Warstein zwischen Westerbach-Tal...Geologie des Warsteiner Sattels 11 sĂŒdlich der Bilstein-Höhle und der âPlatte" sind die Kieselschiefer |  | | Journal (article/letter/editorial) | | extensively investigated (e.g. Liu and Bassett 1986; Kraft et al. 1991; Katsura et al. 1991; Gillet 1993; Gillet...temperatures have revealed that the intermediate dolomite (CaMg(CO3)2) and huntite (CaMg3(CO3)4) decompose...(Liu and Bassett 1986), and at 36 GPa and „1800oC (Kraft et al. 1991) in the static high pressure experiments...minerals â strontianite (SrCO3, from Hamm, Westphalia, Germany), witherite (BaCO3, from Elizabethtowne,...high-temperature behaviour of calcite, magnesite, dolomite, and aragonite. Phys Chem Minerals 20: 1â18 Gupta |  | | Report (issue) | | three-quarters of a mile north of Craley; B, Marburg schist, 1 mile north of Windsor; C, Marburg schist...________________ 13. A, Marburg schist, 1 mile north of Marburg; B, Marburg schist, showing greater detail;...showing major structural axes and thrust faults north of the Martic overthrust_---__-______-_________...Harpers phyllite thrust northwestward over Ledger dolomite; C, Polished surface of closely folded quartzose..._____ 3. Columnar section of sedimentary rocks north of the Martic overthrust in the Hanover-York district |  | Efthimiopoulos, I., Jahn, S., Kuras, A., Schade, U., Koch-MĂŒller, M. (2017) Combined high-pressure and high-temperature vibrational studies of dolomite: phase diagram and evidence of a new distorted modification. Physics and Chemistry of Minerals, 44 (7) 465-476 doi:10.1007/s00269-017-0874-5 | Journal (article/letter/editorial) | | high-pressure and high-temperature vibrational studies of dolomite: phase diagram and evidence of a new distorted...spectroscopy study on a natural ÂCaMg0.98Fe0.02(CO3)2 dolomite sample was performed both at ambient and high...phase diagram was constructed for all the reported dolomite ambient- and high-pressure polymorphs. In addition...addition, a local distortion of the ambient-pressure dolomite structure was identified close to 11 GPa, just...suggest a metastable nature of the high-pressure dolomite polymorphs. Finally, theoretical spectroscopy |  | McAdam, A.C., Zolotov, M.Yu., Mironenko, M.V., Leshin, L.A., Sharp, T.G. (2006) Low pH weathering of Mars analog lithologies: Thermodynamic modeling. Geochimica et Cosmochimica Acta, 70 (18) doi:10.1016/j.gca.2006.06.819 | Journal (article/letter/editorial) | | Petrology, Albert-Ludwig-University of Freiburg, Germany (juraj.majzlan@minpet. uni-freiburg.de) The system...of weathering and neutralization, goethite and dolomite dominate. Gypsum forms at calculated pHs of 1â7...kaolinite, and zeolites. At lower W/R, goethite and dolomite dominate. Weathering of Gusev basalt in a system...more goethite, and in magnesite in addition to dolomite, consistent with a greater Mg + Fe to Ca ratio...contribute to silica-rich martian surfaces (e.g., Kraft et al., 2003). References Banin, A. et al., 1997 |  | | Journal (article/letter/editorial) | | Petrology, Albert-Ludwig-University of Freiburg, Germany (juraj.majzlan@minpet. uni-freiburg.de) The system...of weathering and neutralization, goethite and dolomite dominate. Gypsum forms at calculated pHs of 1â7...kaolinite, and zeolites. At lower W/R, goethite and dolomite dominate. Weathering of Gusev basalt in a system...more goethite, and in magnesite in addition to dolomite, consistent with a greater Mg + Fe to Ca ratio...contribute to silica-rich martian surfaces (e.g., Kraft et al., 2003). References Banin, A. et al., 1997 |  | | Journal (article/letter/editorial) | | experiments (e.g., Fiquet et al. 1994; Suito et al. 2001; Kraft et al. 1991; Shirasaka et al. 2002). In the next...GPa and room temperature after heating (Fig. 3). Kraft et al. (1991) reported that aragonite was observed...is generally consistent with the previous study (Kraft et al. 1991). The post-aragonite phase is likely...most dominant carbonates are calcite, CaCO3, and dolomite, (Mg,Ca)CO3. Marine sediments and hydrothermally...peridotite. Calcite (or aragonite) changes to dolomite and magnesite at pressures higher than 4 GPa. |  | | Journal (issue) | | MONTHLY Contents for July, 1947 CHlPS FROM THE QUARRY .................................................the uppc!r plateau of Lahoul, which lies· 1n the north toward w m ar tl !( V, ROCKS AND MIN ERA LS...and Jost its position as the highest peak on the North Continent of America, humbling itself co a lowly...of M ount St. rfelena, and less than 100 miles north of San Francisco. It is reached by paved road. Being...Oaks, about two miles along the cast shore road. North of the lake is the village of U.pper Lake, and on |  | Efthimiopoulos, I., MĂŒller, J., Winkler, B., Otzen, C., Harms, M., Schade, U., Koch-MĂŒller, M. (2019) Vibrational response of strontianite at high pressures and high temperatures and construction of PâT phase diagram. Physics and Chemistry of Minerals, 46 (1) 27-35 doi:10.1007/s00269-018-0984-8 | Journal (article/letter/editorial) | | Accepted: 25 June 2018 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract Our joint...GeoForschungsZentrum GFZ, Telegrafenberg, 14473 Potsdam, Germany 2 Institut fĂŒr Geologie und Mineralogie, UniversitĂ€t...UniversitĂ€t zu Köln, ZĂŒlpicher Str. 49b, 50674 Cologne, Germany 3 Institute for Geosciences, Goethe University...Main, Germany 4 Helmholtz-Zentrum Berlin, EM-IMM, AlbertâEinsteinâStr. 15, 12489 Berlin, Germany polymorphs...both calcite-type and aragonite-type carbonates (Kraft et al. 1991; Grzechnik et al. 1999; Catalli et al |  | | Journal (article/letter/editorial) | | UniversitĂ€t TĂŒbingen, Wilhelmstrasse 56, 72074 TĂŒbingen, Germany Abstract Sellaite (MgF2) forms from melts, fluids...The Clara mine near Oberwolfach (Schwarzwald, Germany) is an extensive hydrothermal vein-type deposit...vein system in the Schwarzwald ore district, SW Germany (Maus 1977; Maus et al. 1979; Gerler 1983). This...vein, Schwarzwald, anhydrite, pyrite, quartz, SW Germany barite Diabase, low-grade metamorphic schist,...Huanzala, Peru Meta-dolomite Mt. Bischoff, Tasmania, Australia Fluorite, quartz, dolomite, magnesite, illite |  | | Journal (article/letter/editorial) | | results for magnesiteare similar to previous data on dolomite, in that the two lowest frequency Raman-active...mantle (Berg, 1986;Canil, 1990;Katsura and Ito, 1990;Kraft et al., 1991).Among such carbonates, calcite representsa...our prior Raman data on dolomite and infrared and Raman data on aragonite(Kraft et al., 1991), these data...Raman mode shifts Magnesite(MgCO3) vo (cm 1) Dolomite- [CaMg(COJ"] dvldP(cm llGPal 1095 735 329 216...mode lattice mode t Data from Kraft et at. (1991). magnesiteand dolomite at high pressuresis in contrast |  | | Journal (article/letter/editorial) | | compressionof the unit-cell parametersis observedfor dolomite and magnesite,with the c axis three times more...equationof stateequalto Ko : 112.9+ 2.2 GPa for dolomite and Ko : 137.5 + 3.2 GPa for magnesite.At25 GPa...polymorphsby Wilmagnesite on and calcite cently by Kraft et al. (1991),Canil and Scarfe(1990),or (1992) liams...liams calcite, magnesite, et al. and on dolomite, Katsuraand Ito (1990).The recentobservationsofBiellmann...high-pressure Ross done by and Reeder(1992)on dolomite and ankeropeningnew perspectiveson the storageofC |  | | Report (chapter) | | Museum, Senckenberganlage 25, 60325 Frankfurt, Germany 2 Sedimentary Petrology, B 20, University of...or the otomari Event sensu Walliser (1985). In Germany, the otomari Event was described in pelagic carbonates... 1994; Nesbor 2004). The RSG east of the river Rhine is characterized by several autochthonous and parautochthonous...2014). West of the river Rhine, the Eifel synclines, interpreted as part of the north âsouth-trending axial...In contrast to the entire RSG east of the river Rhine, the Eifel area shows very low to lowgrade thermal |  | | Journal (article/letter/editorial) | | of the scientifically progressve Kings Mountain, North Carolina. concern. It was with a great deal of pleasure...Committee 113 Huntington Terrace, Newark 8, N. J. North Jersey Mineralogical Society Meeting January 8,...Curt Segeler of Queens Mineral Society told the North Jersey Mineralogical Society at its January meeting...chiefly in Sweden and Norway, and in small amounts in North Carolina, Virginia, New Hampshire and other eastern...collected at the famous Haddam Neck, Conn. (Gillette Quarry), and found several transparent green tourmaline |  | Rapprich, V., Kochergina, Y. V., Magna, T., Laufek, F., HalodovĂĄ, P., BĆŻzek, F. (2017) Carbonate-rich dyke in Roztoky Intrusive Complex - an evidence for carbonatite magmatism in the Eger Rift?. Journal of GEOsciences, 62 (2) 121-136 | Journal (article/letter/editorial) | | lamprophyres (Ulrych et al. 1993, 2014), and magmatic dolomite occurs in the alkaline dyke from the Ralsko Hill...Reeder 1985), quartz (Le Page and Donnay 1976), dolomite (Reeder and Dollase 1989), albite (Ferguson et...the [104] direction for calcite and Fe-bearing dolomite. 3.2. Whole-rock major and trace element chemistry...under vacuum for 24 hours (calcite) and 72 hours (dolomite). The measurements were performed using a dual...fractionation factors for calcite and dolomite, the ÎŽ18O value for dolomite was corrected by â0.84 â° (Becker |  | Li, Ying, Zou, Yongtao, Chen, Ting, Wang, Xuebing, Qi, Xintong, Chen, Haiyan, Du, Jianguo, Li, Baosheng (2015) P-V-Tequation of state and high-pressure behavior of CaCO3aragonite. American Mineralogist, 100 (10) 2323-2329 doi:10.2138/am-2015-5246 | Journal (article/letter/editorial) | | temperatures has been studied by infrared spectroscopy (Kraft et al. 1991), Xâray diffraction (Martinez et al...scattering (Liu et al. 2005), and Raman spectroscopy (Kraft et al. 1991; Williams et al. 1992; Gillet et al...observed in aragonite up to 30â40 GPa according to Kraft et al. (1991) and Gillet et al. (1993). At pressures...the internal vibrational modes under compression (Kraft et al. 1991). As shown in Figure 6b, from ambient...inferred from vibrational spectroscopy data by Kraft et al. (1991). Previously, Holl et al. (2000) carried |  | | Journal (article/letter/editorial) | | of aragonite and dolomite at high pressureand high temperature:Evidencefor dolomite breakdownto aragoniteand...spectra have been collected for aragonite (CaCOr)and dolomite [CaMg(COr)r]at high pressureand high temperature...aragoniteand dolomite, respectivelyland K6 12.7(7)and 2.3(5) for aragoniteand dolomite, respectivelyl...carbonates. At pressuresexceeding5 GPa, we observedthat dolomite breaks down to aragoniteand magnesite.We used...calculate the position of the equilibrium curve: dolomite - aragonite * magnesite.This reaction could be |  | | Journal (article/letter/editorial) | | S.W. California. COLORADOâ"I got this specimen north of Del Monte, Colo., about 30 miles. It came off...the old abandoned ore dumps from a long ago mine, north of Cartersville. At the present time several companies...slate or phyllite. NEBRASKA â From Angora Hill, north of Bridgeport, Morrill Co., Nebr., we have a very...in by Irl Everett (Everett Lapidary Shop), 2941 north 65, Lincoln, Neb. This milk opal (named 578 for...ft. chunk of this at the edge of the serpentine quarry." The specimens are rough, cellular smoky quartz |  | Wang, Xiang, Ye, Yu, Wu, Xiang, Smyth, Joseph R., Yang, Yan, Zhang, Zengming, Wang, Zhongping (2019) High-temperature Raman and FTIR study of aragonite-group carbonates. Physics and Chemistry of Minerals, 46 (1) 51-62 doi:10.1007/s00269-018-0986-6 | Journal (article/letter/editorial) | | / Accepted: 5 July 2018 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract In situ...2005; Chaney et al. 2015; Lin and Liu 1997b, c; Kraft et al. 1991) ; we will evaluate and discuss the...Gunasekaran et al. 2006; Liu and Mernagh 1990; Kraft et al. 1991; Rutt and Nicola 1974; SĂĄnchez-Pastor...high-temperature Raman spectra of calcite, magnesite, dolomite and aragonite (Gillet et al. 1993). The temperature...pressure for aragonite (Biellmann and Gillet 1992; Kraft et al. 1991), strontianite (Lin and Liu 1997c), |  | | Report (issue) | | 1969 Dr. Thomas W. Brockenbrough 1970 Dr. John C. Kraft 1971 Dr. Alfred J. Strohmaier 1972 Dr. William S...Papers on The Geology of Delaware Edited by JOHN c. KRAFT and WENDY CAREY 1979 THE DELAWARE ACADEMY OF SCIENCE...made publication of this volume possible. John C. Kraft Chairperson and Professor, Depanmen t of Geology...Pickett 21 3. The Coastal Environment by John C Kraft 31 4. Geology of the Atlantic Continental Margin...PAPERS ON THE GEOLOGY OF DELAWARE Editors JOHN C. KRAFT WENDY CAREY OFFICERS President President-Elect |  | Bayon, Germain, Lambert, Thibault, Vigier, Nathalie, De Deckker, Patrick, Freslon, Nicolas, Jang, Kwangchul, Larkin, Christina S., Piotrowski, Alexander M., Tachikawa, Kazuyo, Thollon, Maude, Tipper, Edward T. (2020) Rare earth element and neodymium isotope tracing of sedimentary rock weathering. Chemical Geology, 553. 119794pp. doi:10.1016/j.chemgeo.2020.119794 | Journal (article/letter/editorial) | | to deposition as sediments (Bayon et al., 2004; Kraft et al., 2013). Recently, a study conducted in the...cratons of Africa (West African and Congo Shields), North America (Canadian Shield), northern South America...characterized by low Sr/Ca ratios (e.g. high-Mg calcite, dolomite, siderite). In leached sediment fractions from...60% of extracted Ca appear to be derived from dolomite (Fig. 4). By analogy, the presence of of high-Mg...riverine ï„Nd signature (e.g. Bayon et al., 2004; Kraft et al., 2013; Jang et al., 2020). In this study |  | Gillet, Philippe, Biellmann, Claudine, Reynard, Bruno, McMillan, Paul (1993) Raman spectroscopic studies of carbonates part I: High-pressure and high-temperature behaviour of calcite, magnesite, dolomite and aragonite. Physics and Chemistry of Minerals, 20 (1) doi:10.1007/bf00202245 | Journal (article/letter/editorial) | | High-Temperature Behaviour of Calcite, Magnesite, Dolomite and Aragonite Philippe Gillet*, Claudine Biellmann...room-temperature Raman spectra of aragonite, magnesite and dolomite have been recorded up to 30 GPa and 25 GPa, respectively...Raman spectra of calcite, aragonite, magnesite and dolomite is reported up to 800-1100 K. The measured relative...calcite are considerably larger than those for dolomite and magnesite, and a marked non-linear increase...atomic displacements in calcite, magnesite and dolomite with increasing temperature from the vibrational |  | | Journal (article/letter/editorial) | | devolatilization of carbonates at the Ries crater, Germany has been reported by Baranyi (1980) and consists...reflect a sequence of events in which the target dolomite decomposed into MgO, CaO, and CO2; the CO2 escaped...different structural units in their compaction (Kraft et al. 1991). In addition, phase transitions in...entire range of shock pressures from 10 to 60 GPa. Kraft et al. (1991) report up to 3.4 cm1 GPa1 Raman...x Ï
2 Raman band broadening is less than 3 cm1. Kraft et al. (1991) observed pressure-dependent site-group |  | | Journal (article/letter/editorial) | | Volume 81,pages 181-186,1996 Coesiteinclusionsin dolomite from eclogite in the southernDabie Mountains,...AssrRAcr Coesiteinclusions have been discoveredin dolomite from carbonate-bearingeclogitein the Dabie UHP...ite is composed of garnet, coesite or quartz, dolomite, magnesite,omphacite, rutile, +minor phengite... < 0. l. In addition to coesite inclusions in dolomite, inclusions of coesite and quartz pseudomorphs...the coesiteinclusions but are absentin the dolomite. Dolomite contains about l4 molo/oankerite component |  | | Journal (article/letter/editorial) | | Freiburg, Albertstrasse 23b, Dâ79104 Freiburg, Germany Anatoly N. ZAITSEV Institut fĂŒr Mineralogie, Petrologie...Freiburg, Albertstrasse 23b, Dâ79104 Freiburg, Germany, and Department of Mineralogy, St. Petersburg State...of the porphyritic lavas was given in Keller & Kraft (1990) as 26% nyerereite and 22% gregoryite phenocrysts...1989). Another carbonatite complex about 20 km northâ northwest of Lengai is the poorly known Mosonik...(Dawson 1962b, 1993, Dawson et al. 1987, Keller & Kraft 1990, Zaitsev & Keller 2006). Observations during |
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