 | Dekov, Vesselin M., Kamenov, George D., Savelli, Carlo, Stummeyer, Jens, Thiry, Médard, Shanks, Wayne C., Willingham, Amanda L., Boycheva, Tanya B., Rochette, Pierre, Kuzmann, Ernő, Fortin, Danielle, Vértes, Attila (2009) Metalliferous sediments from Eolo Seamount (Tyrrhenian Sea): Hydrothermal deposition and re-deposition in a zone of oxygen depletion. Chemical Geology, 264 (1) 347-363 doi:10.1016/j.chemgeo.2009.03.023 | Journal (article/letter/editorial) | | g e o Metalliferous sediments from Eolo Seamount (Tyrrhenian Sea): Hydrothermal deposition and re-deposition...Geologia Marina, CNR, Via Gobetti 101, 40129 Bologna, Italy d Bundesanstalt für Geowissenschaften und Rohstoffe...Rickard Keywords: Eolo Seamount Hydrothermal activity Metalliferous sediments Tyrrhenian Sea a b s t r a...core taken from the south–east slope of the Eolo Seamount is composed of alternating red-brown and light-brown...the extremely high background Al content of the Tyrrhenian seawater due to the high eolian terrigenous flux |  | Dekov, Vesselin M., Kamenov, George D., Stummeyer, Jens, Thiry, Médard, Savelli, Carlo, Shanks, Wayne C., Fortin, Danielle, Kuzmann, Ernő, Vértes, Attila (2007) Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea) Chemical Geology, 245 (1) 103-119 doi:10.1016/j.chemgeo.2007.08.006 | Journal (article/letter/editorial) | | Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea) Vesselin M....Geologia Marina, CNR, Via Gobetti 101, 40129 Bologna, Italy f U.S. Geological Survey, 973 Denver Federal Center...slope of the Eolo Seamount, Tyrrhenian Sea. The clay bed is composed of pure nontronite (described for...first time in the Tyrrhenian Sea), which appears to be the most aluminous nontronite ever found among...hydrothermal solutions. The REE distribution of the Eolo nontronite has a V-shape pattern. The heavy REE enrichment |  | Ligi, M., Cocchi, L., Bortoluzzi, G., D'Oriano, F., Muccini, F., Caratori Tontini, F., de Ronde, C. E. J., Carmisciano, C. (2014) Mapping of Seafloor Hydrothermally Altered Rocks Using Geophysical Methods: Marsili and Palinuro Seamounts, Southern Tyrrhenian Sea. Economic Geology, 109 (8) 2103-2117 doi:10.2113/econgeo.109.8.2103 | Journal (article/letter/editorial) | | Geophysical Methods: Marsili and Palinuro Seamounts, Southern Tyrrhenian Sea Marco Ligi,1,† Luca Cocchi,2 Giovanni...Scienze Marine, CNR, Via Gobetti 101, 40129, Bologna, Italy Nazionale di Geofisica e Vulcanologia, Roma 2,...Via Pezzino Basso 2, 19025, Fezzano (La Spezia), Italy 3 GNS Science, Ocean Exploration Section, 1 Fairway...Marsili and Palinuro volcanic complexes, southern Tyrrhenian Sea, during the 2010 TIR10 and 2011 MAVA2011...Hydrothermal alteration associated with the Marsili seamount is largely distributed along primary volcano-tectonic |  | | Journal (article/letter/editorial) | | Fluids in Deep-Sea Hydrothermal Systems Shamik Dasgupta , Xiaotong Peng * and Kaiwen Ta Deep Sea Science Division...Division, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China;... Abstract: The discovery of deep-sea hydrothermal vents in the late 1970s widened the...reactions. Here, we briefly review the global deep-sea hydrothermal systems, microbial diversity, and microbe–mineral...Fluids in Deep-Sea Hydrothermal Systems. Minerals Keywords: hydrothermal vent; deep sea; microbe–mineral |  | Josso, P., Pelleter, E., Pourret, O., Fouquet, Y., Etoubleau, J., Cheron, S., Bollinger, C. (2017) A new discrimination scheme for oceanic ferromanganese deposits using high field strength and rare earth elements. Ore Geology Reviews, 87. 3-15 doi:10.1016/j.oregeorev.2016.09.003 | Journal (article/letter/editorial) | | by on-board instruments to aid in exploration at sea. Key words: Ferromanganese mineralization; hydrogenetic...submarine volcanoes along volcanic arcs and hot spot seamounts, or less commonly associated with fractures distant...subduction zones and associated Lau and North Fiji back-arc basins, and the currently active Samoan hotspot....these crusts as Mn oxyhydroxides, Fe oxides and nontronite cementing basaltic pyroclastic facies and brecciated...with the presence of discrete goethite grains. Nontronite, the ferrous end-member of dioctahedral smectite |  | Liu, Deng, Wang, Fengping, Dong, Hailiang, Wang, Hongmei, Zhao, Linduo, Huang, Liuqin, Wu, Lingling (2016) Biological reduction of structural Fe(III) in smectites by a marine bacterium at 0.1 and 20 MPa. Chemical Geology, 438. 1-10 doi:10.1016/j.chemgeo.2016.05.020 | Journal (article/letter/editorial) | | different iron contents (montmorillonite SWy-2 and nontronite NAu-2) as the sole electron acceptor, and a marine...Na-montmorillonite (SWy-1) to 4.2 mmol Fe(III)/g for nontronite (NAu-2) (Zhang et al., 2007a). Structurally-coordinated...associated mineral transformations are rare. The deep-sea environments, as we know, are subjected to highly...were selected: Wyoming montmorillonite SWy-2 and nontronite NAu-2. These two samples have a similar structure...facultative bacterium, was isolated from west Pacific deep-sea sediment located at a water depth of 1914 m (Xiao |  | Petersen, S., Monecke, T., Westhues, A., Hannington, M. D., Gemmell, J. B., Sharpe, R., Peters, M., Strauss, H., Lackschewitz, K., Augustin, N., Gibson, H., Kleeberg, R. (2014) Drilling Shallow-Water Massive Sulfides at the Palinuro Volcanic Complex, Aeolian Island Arc, Italy. Economic Geology, 109 (8) 2129-2158 doi:10.2113/econgeo.109.8.2129 | Journal (article/letter/editorial) | | Sulfides at the Palinuro Volcanic Complex, Aeolian Island Arc, Italy Sven Petersen,1,† Thomas Monecke,2 Anne...Louis Pasteur, Ottawa, Ontario, K1N 6N5 Canada ARC Centre of Excellence in Ore Deposits, University...complex, the northernmost Aeolian arc volcano in the Tyrrhenian Sea, Italy. Using a lander-type drilling...mineralization not previously recognized in a modern volcanic arc environment. The barite and sulfide occurrence at...occurring in volcanic arcs. Recent investigations of arc-related hydrothermal 2129 2130 PETERSEN ET AL |  | Sun, Zhilei, Zhou, Huaiyang, Yang, Qunhui, Sun, Zhixue, Bao, Shenxu, Yao, Huiqiang (2011) Hydrothermal Fe–Si–Mn oxide deposits from the Central and South Valu Fa Ridge, Lau Basin. Applied Geochemistry, 26 (7) 1192-1204 doi:10.1016/j.apgeochem.2011.04.008 | Journal (article/letter/editorial) | | Mariner hydrothermal field (MHF) in the Central and Southern Valu Fa Ridge (VFR), Lau Basin were examined to...Hrischeva and Scott, 2007; Dekov et al., 2010), back-arc basins (Fouquet et al., 1993; Iizasa et al., 1998;...Savelli, 2004; Kato et al., 2009), intra-plate seamounts (Alt, 1988; Boyd and Scott, 1999; Dekov et al...Geological setting The Lau Basin is a wedge-shaped, back-arc basin located in the SW Pacific Ocean, just west of...of the Tonga Trench. About 5.5 Ma ago, true back-arc spreading began and propagated southwards (Hawkins |  | | Journal (article/letter/editorial) | | MINERALOGY AND LA–ICP–MS DATING OF SUPERGENE U–Cu NONTRONITE-BEARING MINERALIZATION AT NABBURG–WÖLSENDORF...D–60054 Frankfurt am Main, Germany Abstract Nontronite has been reported from a wide range of mineral...sulfide-bearing parent material. In contrast, nontronite from veintype fluorite mineralization at Nabburg–Wölsendorf...not involved in this supergene mineralization. Nontronite–uranocircite mineralization can develop in almost...are decisive as to whether nontronite, kaolinite or green opal (nontronite plus opal) comes into existence |  | | Journal (article/letter/editorial) | | 2001). Some of the above studies found that nontronite abundance, in particular, decreased with increasing...hydrothermally active site. The formation of nontronite and Fe-rich montmorillonite in such environments...dissolution of siliceous debris in association with nontronite in the Bauer Deep (~10ºS, 102ºW). When observed...detail, he found that the siliceous tests had nontronite particles attached to them as if growing on their...their surfaces. Cole (1985) concluded that nontronite formation was mainly the result of the contact |  | Novák, Milan, Čopjaková, Renata, Dosbaba, Marek, Galiová, Michaela VAŠINOVÁ, Všianský, Dalibor, Staněk, Josef (2015) Two Paragenetic Types of Cookeite From the Dolní Bory-Hatě Pegmatites, Moldanubian Zone, Czech Republic: Proximal and Distal Alteration Products of Li-Bearing Sekaninaite. The Canadian Mineralogist, 53 (6) 1035-1048 doi:10.3749/canmin.1400090 | Journal (article/letter/editorial) | | associated with muscovite, quartz, tourmaline, albite, nontronite, and chlorite in pegmatite No. 1 (proximal cookeite...followed by crystallization of an Fe-rich mineral—nontronite and siderite, respectively. Keywords: cookeite...and nontronite. The individual clay minerals (muscovite/illite, cookeite, kaolinite, nontronite) typically...current of 4 nA for cookeite, kaolinite, and nontronite and 10 nA for siderite, tourmaline, muscovite...diameter of 10 mm was used for cookeite, kaolinite, nontronite, and siderite and 5 mm for tourmaline, muscovite |  | | Journal (article/letter/editorial) | | 616–632, 2012. LABORATORY-SIMULATED DIAGENESIS OF NONTRONITE M A T T H EW A. M I L L ER , A ND R E W S . M...Street, Suite 710, Norman, OK 73019, USA Abstract—Nontronite NAu-1 was exposed to moderate temperature and...Words—Diagenesis, Ferroceladonite, Illite-Smectite, Iron, Nontronite, TEM, XRD. INTRODUCTION Illitization during...of Fe-rich smectite. Fe-rich smectites such as nontronite and ferrous saponites have been studied in the...alteration and/or diagenesis, experimental studies of nontronite alteration are lacking. In the summary of experimental |  | | Journal (article/letter/editorial) | | THE CRYSTALLINITY OF SYNTHETIC NONTRONITE AND IMPLICATIONS FOR NONTRONITE FORMATION IN COLUMBIA RIVER BASALTS...Abstract—The formation conditions of the ferric smectite nontronite are not fully understood. The present study couples...the degree of crystal ordering of the natural nontronite samples. These observations suggest that highly...with other estimates of nontronite growth rates suggests that natural nontronite crystallization in the...Words—Columbia River Basalts, Fe K-edge XAFS, Nontronite. INTRODUCTION Nontronite is a dioctahedral ferric smectite |  | Schwenzer, S.P., Abramov, O., Allen, C.C., Clifford, S.M., Cockell, C.S., Filiberto, J., Kring, D.A., Lasue, J., McGovern, P.J., Newsom, H.E., Treiman, A.H., Vaniman, D.T., Wiens, R.C. (2012) Puncturing Mars: How impact craters interact with the Martian cryosphere. Earth and Planetary Science Letters, 335. 9-17 doi:10.1016/j.epsl.2012.04.031 | Journal (article/letter/editorial) | | Building, Mayfield Road, Edinburgh, EH9 3JZ, UK e Southern Illinois University, Geology Department—MC 4234...predicts will include hydrous silicates (e.g., nontronite, chlorite, serpentine). Thus, even small impact...and 1000, Fig. 4) di-octahedral smectite, Mg-nontronite (e.g., Mg0.33Fe4(Al2Si6O20)(OH)4.nH2O), may form...parameters such as oxidation state. For example, the nontronite–serpentine assemblage found in the nakhlites...(Harder, 1976; Grauby et al., 1994), terrestrial nontronite formation (e.g., Dekov et al., 2007), and observations |  | Milinovic, Jelena, Dias, Ágata Alveirinho, Janeiro, Ana I., Pereira, Manuel F. C., Martins, Sofia, Petersen, Sven, Barriga, Fernando J. A. S. (2020) XRD Identification of Ore Minerals during Cruises: Refinement of Extraction Procedure with Sodium Acetate Buffer. Minerals, 10 (2) 160 doi:10.3390/min10020160 | Journal (article/letter/editorial) | | detected (e.g., calcic plagioclase, montmorillonite, nontronite). In non-carbonated samples, Fe oxides and hydroxides...diffraction (XRD) identification of minerals for deep-sea mineral exploration was been developed as a part...Mining-breakthrough solutions for sustainable deep sea mining”. In this work, rapid, exploration-oriented...GC-617 were collected in the eastern part of the Southern mound, whereas GC-636 was obtained 900 m Minerals...GC-617 were collected in the eastern part of the Southern mound, whereas GC-636 was obtained SW m of this |  | | Journal (article/letter/editorial) | | BIFs. Modern interpretations consider BIFs as deep sea sediments with the source of the iron and silica...silica derived from reactions between circulating sea water and hot mafic to ultramafic rocks producing hydrothermal...hydrothermal systems venting onto the sea floor. The solubility of ferrous and ferric iron and silica is...shallow oceans and immature continents, preserved sea floor deposits as greenstone belts and in marginal...buoyant continents caused the subduction of deep sea ocean crust including BIF deposits. The temporal |  | | Journal (article/letter/editorial) | | modern analogues in the Red Sea. Diagenetic minerals include nontronite, greenalite, stilpnomelane, magnetite...seawater . REE . Hydrothermal plume . Greenalite . Nontronite Introduction Editorial handling: P. Eilu Electronic...submarine volcanic sequence related to back-arc or inter-arc rifting in an oceanic setting outboard of...in containing abundant greenalite, and local nontronite and manganosiderite, together with common magnetite...manganosiderite, sphalerite, and stilpnomelane. Nontronite is abundant in a few samples, forming early intergrowths |  | | Journal (article/letter/editorial) | | hydrothermal iron oxyhydroxide deposit formation at loihi seamount Olivier Rouxel, Brandy Toner, Yoan Germain, Brian...hydrothermal iron oxyhydroxide deposit formation at loihi seamount, Geochimica et Cosmochimica Acta (2017), doi:...HYDROTHERMAL IRON OXYHYDROXIDE DEPOSIT FORMATION AT LOIHI SEAMOUNT Olivier Rouxel 1,2*, Brandy Toner 3, Yoan Germain...hydrothermal vents, such as those encountered at Loihi Seamount, harbor abundant microbial communities and provide...at the seafloor. Hydrothermal activity at Loihi Seamount produces abundant microbial mats associated with |  | | Journal (article/letter/editorial) | | sources of Mg/Fe-smectites (e.g. saponite and nontronite) such as weathering profiles of basic/ultrabasic...mineral deposits are found in the ancient (Noachian) southern terrains (Mustard et al., 2008; Carter et al....the discussion of formation conditions below. Nontronite, an Fe-rich dioctahedral smectite, has also been...(Pedro et al., 1978). Terrestrial occurrences of nontronite may be of particular interest because this ferric...(Badaut and Risacher, 1983). As another example, nontronite peloids forming in recent deltaic deposits in |  | | Journal (article/letter/editorial) | | presence of lanthanides at the octahedral sites in nontronite formed in hydrothermal deposits, an Fe-rich smectite...Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea). Chemical Geology |  | | Journal (article/letter/editorial) | | further south between the Glenburgh Terrane and the southern margin of the Pilbara Craton (Johnson et al.,...investigated here are from Paraburdoo, near the southern margin of the basin (core DDH75/1 ), and Wittenoom...DISCUSSION Today, Fe and Mn (hydr)oxides, found in deep-sea hydrothermal sediments or hydrogenetic Fe-Mn crusts...from upwelling areas (Arning et al., 2009) or seamounts (Bau et al., 1996; Hein et al 1993), as both deposits...the sediment. 6.2.2. Greenalite Hydrothermal nontronite, a Fe3+-smectite of similar chemical composition |  | Peng, Xiaotong, Chen, Shun, Zhou, Huaiyang, Zhang, Lixue, Wu, Zijun, Li, Jiangtao, Li, Jiwei, Xu, Hengchao (2011) Diversity of biogenic minerals in low-temperature Si-rich deposits from a newly discovered hydrothermal field on the ultraslow spreading Southwest Indian Ridge. Journal of Geophysical Research, 116. doi:10.1029/2011jg001691 | Journal (article/letter/editorial) | | to recover the samples from the seafloor to the sea surface. When recovered on deck, the samples in the...clones from deep‐sea hydrothermal vents, hot springs, submarine mud volcanoes, and deep‐sea sediments [Murray...with clones from deep‐sea hydrothermal vent water, Hawaiian volcanic deposits, sea sediments, as well as...are mainly affiliated with clones from the deep‐sea sediments. The sequences of Archaea are mainly related...related to some groups of uncultured archaea from deep‐sea sediments and hydrothermal systems. The low abundance |  | Zhang, Xuemei, Ji, Lei, He, Xuemei (2020) Gemological Characteristics and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction, and Raman Spectroscopic Study. Minerals, 10 (5) 401 doi:10.3390/min10050401 | Journal (article/letter/editorial) | | suggested that ferruginous layered silicates (i.e., nontronite and lembergite) prefer to crystallize from Si-...phosphorite and black shale from Safaga district, Red Sea, Egypt. Spectrochim. Acta Part A 2014, 118, 42–47...with English abstract). [CrossRef] Harder, H. Nontronite synthesis at low temperatures. Chem. Geol. 1976...Hydrothermal nontronite formation at Eolo Seamount (Aeolian volcanic arc, Tyrrhenian Sea). Chem. Geol |  | Chen, Xian, Sun, Xiaoming, Wu, Zhongwei, Wang, Yan, Lin, Xiao, Chen, Hongjun (2021) Mineralogy and Geochemistry of Deep-Sea Sediments from the Ultraslow-Spreading Southwest Indian Ridge: Implications for Hydrothermal Input and Igneous Host Rock. Minerals, 11 (2) 138 doi:10.3390/min11020138 | Journal (article/letter/editorial) | | minerals Article Mineralogy and Geochemistry of Deep-Sea Sediments from the Ultraslow-Spreading Southwest...X.; Chen, H. Mineralogy and Geochemistry of Deep-Sea Sediments from the Ultraslow-Spreading Southwest...University, Guangzhou 510275, China South China Sea Institute of Planning and Environmental Research...products, and diagnostic mineral tracers (e.g., nontronite, SiO2(bio) , olivine, serpentine, talc, sepiolite...effective to differentiate the host rock of deep-sea sediments and to detect a possible hydrothermal input |  | | Journal (article/letter/editorial) | | generally formed in association with island arc or back-arc basins (Zhang et al., 2012b). The Lüliang area...The carbonate-facies BIF is only found in the southern part of the Yuanjiacun area. Toward the surface...Fe-rich, but Al-poor silicate precursor such as nontronite, which is itself readily synthesized at low temperature...addition, such processes would have caused marked sea-level rise and transgressions, which in turn favored...presence of dissolved Fe(II) (Harder, 1976, 1978), nontronite (precursor to stilpnomelane) is readily precipitated |
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