 | | Journal (article/letter/editorial) | | MINERALOGY OF GOLD-RICH HYDROTHERMAL PRECIPITATES FROM THE EASTERN MANUS BASIN, PAPUA NEW GUINEA ROGER MOSS§ AND...the five hydrothermal vent fields currently known in the Manus back-arc basin of Papua New Guinea are enriched...precipitates from the PACMANUS and Susu Knolls hydrothermal fields in eastern Manus Basin contain up to 56...sulfur is indicated for the gold-rich eastern Manus Basin precipitates by the sulfide assemblages, the...consistent with the high activity of sulfur in the hydrothermal system. According to available experimental |  | | Journal (article/letter/editorial) | | in the Active Subsea-Floor Pacmanus Hydrothermal System, Papua New Guinea, ODP Leg 193 H. PAULICK† Holger...Abstract Pacmanus is an active submarine hydrothermal system in the Manus back-arc basin, Papua New Guinea...Guinea, located at 1,600 to 1,700 m below sea level on the crest of a dacitic volcano. It is inferred to...modern analogue of ancient mineralizing sea-floor hydrothermal systems that produced volcanogenic polymetallic...Leg 193 drilled the subsea-floor hydrothermal alteration zone of Pacmanus in a high-temperature discharge |  | Reeves, Eoghan P., Seewald, Jeffrey S., Saccocia, Peter, Bach, Wolfgang, Craddock, Paul R., Shanks, Wayne C., Sylva, Sean P., Walsh, Emily, Pichler, Thomas, Rosner, Martin (2011) Geochemistry of hydrothermal fluids from the PACMANUS, Northeast Pual and Vienna Woods hydrothermal fields, Manus Basin, Papua New Guinea. Geochimica et Cosmochimica Acta, 75 (4) 1088-1123 doi:10.1016/j.gca.2010.11.008 | Journal (article/letter/editorial) | | Geochemistry of hydrothermal fluids from the PACMANUS, Northeast Pual and Vienna Woods hydrothermal fields, Manus...Manus Basin, Papua New Guinea Eoghan P. Reeves a,b,⇑, Jeffrey S. Seewald b, Peter Saccocia c, Wolfgang...Processes controlling the composition of seafloor hydrothermal fluids in silicic back-arc or near-arc crustal...despite growing evidence for extensive magmatic–hydrothermal activity in such environments. We conducted...from two contrasting sites in the Manus back-arc basin, Papua New Guinea, to examine the influence of variations |  | | Journal (article/letter/editorial) | | com/locate/gca Insights to magmatic–hydrothermal processes in the Manus back-arc basin as recorded by anhydrite...formation of hydrothermal fluids in the convergent margin Manus Basin, Papua New Guinea. Samples comprise...from the PACMANUS (Roman Ruins, Snowcap and Fenway) and SuSu Knolls (North Su) active hydrothermal fields...correlated with REE distributions measured in hydrothermal fluids venting at the seafloor at these vent fields...fields and are interpreted to record episodes of hydrothermal fluid formation affected by magmatic volatile |  | | Journal (article/letter/editorial) | | thermal regimes beneath the PACMANUS hydrothermal field, Papua New Guinea: Helium and oxygen isotope data...February 2011 Editor: P. DeMenocal Keywords: PACMANUS hydrothermal helium isotopes fluid inclusions a b s t...within the Snowcap and Roman Ruins vent sites of the PACMANUS hydrothermal system, Papua New Guinea, were...using 3He/4He ratios from fluid inclusions within pyrite and anhydrite and the δ18O signature of anhydrite...component. δ18O anhydrite ratios are 6.5‰ to 11‰ for Snowcap and 6.4‰ to 11.9‰ for Roman Ruins. Using oxygen |  | Lackschewitz, K.S., Devey, C.W., Stoffers, P., Botz, R., Eisenhauer, A., Kummetz, M., Schmidt, M., Singer, A. (2004) Mineralogical, geochemical and isotopic characteristics of hydrothermal alteration processes in the active, submarine, felsic-hosted PACMANUS field, Manus Basin, Papua New Guinea. Geochimica et Cosmochimica Acta, 68 (21) 4405-4427 doi:10.1016/j.gca.2004.04.016 | Journal (article/letter/editorial) | | characteristics of hydrothermal alteration processes in the active, submarine, felsic-hosted PACMANUS field, Manus...Manus Basin, Papua New Guinea K. S. LACKSCHEWITZ,1,3,* C. W. DEVEY,1,3 P. STOFFERS,2 R. BOTZ,2 A. EISENHAUER... 4 sites were drilled in the active PACMANUS hydrothermal field on the crest of the felsic Pual Ridge...mineralization and alteration patterns. We present new data on clay mineral assemblages, clay and whole...from a site of diffuse low-temperature venting (Snowcap, Site 1188) and a site of high-temperature venting |  | Bach, Wolfgang, Roberts, Stephen, Vanko, David A., Binns, Ray A., Yeats, Chris J., Craddock, Paul R., Humphris, Susan E. (2003) Controls of fluid chemistry and complexation on rare-earth element contents of anhydrite from the Pacmanus subseafloor hydrothermal system, Manus Basin, Papua New Guinea. Mineralium Deposita, 38 (8) 916-935 doi:10.1007/s00126-002-0325-0 | Journal (article/letter/editorial) | | anhydrite from the Pacmanus subseafloor hydrothermal system, Manus Basin, Papua New Guinea Received: 15 April...the active dacite-hosted Pacmanus hydrothermal field in the eastern Manus Basin. Anhydrite is abundant in...anhydrite recovered during ODP Leg 158 from the TAG hydrothermal system at the Mid-Atlantic Ridge which display...anhydrite veins appear to relate to the same hydrothermal stage, we can rule out predominant host-rock...fluoride and possibly sulfate concentrations at Pacmanus may affect REE complexation in fluids, whereas at |  | Wilckens, Frederike K., Reeves, Eoghan P., Bach, Wolfgang, Meixner, Anette, Seewald, Jeffrey S., Koschinsky, Andrea, Kasemann, Simone A. (2018) The influence of magmatic fluids and phase separation on B systematics in submarine hydrothermal vent fluids from back-arc basins. Geochimica et Cosmochimica Acta, 232. 140-162 doi:10.1016/j.gca.2018.04.023 | Journal (article/letter/editorial) | | phase separation on B systematics in submarine hydrothermal vent fluids from back-arc basins Frederike K...phase separation on B systematics in submarine hydrothermal vent fluids from back-arc basins, Geochimica...phase separation on B systematics in submarine hydrothermal vent fluids from back-arc basins Frederike...Germany ABSTRACT The composition of submarine hydrothermal vent fluids is affected by a variety of processes...common in arc/backarc hydrothermal systems, is not well known. To provide new insights into these processes |  | | Journal (article/letter/editorial) | | Deep Sea Mining of Submarine Hydrothermal Deposits and Its Possible Environmental Impact in Manus Basin...Basin, Papua New Guinea Kaul Gena1 1 Department of Mining Engineering,PNG University of Technology, Lae...Lae, Morobe Province, Papua New Guinea Abstract The Manus back-arc basin host three distinct well known...known submarine hydrothermal deposits of Vienna Wood, Pacmanus and Onsen sites. The Vienna Wood site is...predominantly of pyrite, marcasite, sphalerite, wurtzite and chalcopyrite. The Pacmanus site is a polymetallic |  | | Journal (article/letter/editorial) | | Metals into a Hydrothermal System on the Modern Sea Floor of the Eastern Manus Back-Arc Basin, Western Pacific...massive sulfides at the PACMANUS hydrothermal field in the eastern Manus back-arc basin, western Pacific. The...is estimated to have exsolved from the magma at PACMANUS. If a fluid is concentrated in a shallow magma...the sea floor, it will contribute large quantities of volatiles and ore metals directly to a sea-floor...sea-floor hydrothermal system, a process demonstrated for the geothermal systems of subareal volcanoes. The |  | Beaudoin, Yannick, Scott, Steven D., Gorton, Michael P., Zajacz, Zoltan, Halter, Werner (2007) Effects of hydrothermal alteration on Pb in the active PACMANUS hydrothermal field, ODP Leg 193, Manus Basin, Papua New Guinea: A LA-ICP-MS study. Geochimica et Cosmochimica Acta, 71 (17) 4256-4278 doi:10.1016/j.gca.2007.06.034 | Journal (article/letter/editorial) | | Effects of hydrothermal alteration on Pb in the active PACMANUS hydrothermal field, ODP Leg 193, Manus Basin...Basin, Papua New Guinea: A LA-ICP-MS study Yannick Beaudoin a,*,1, Steven D. Scott a, Michael P. Gorton a...volcanic rocks as a source of metals in a seafloor hydrothermal systems has been tested by examining the behavior...trace elements during hydrothermal alteration. ODP Leg 193 drill sites 1188 (Snowcap) and 1189 (Roman Ruins)...on Pual Ridge in the eastern Manus Basin offshore eastern Papua New Guinea provide a unique three-dimensional |  | Hu, Si-Yu, Barnes, Stephen J., Pagès, Anaïs, Parr, Joanna, Binns, Ray, Verrall, Michael, Quadir, Zakaria, Rickard, William D.A., Liu, Weihua, Fougerouse, Denis, Grice, Kliti, Schoneveld, Louise, Ryan, Chris, Paterson, David (2020) Life on the edge: Microbial biomineralization in an arsenic- and lead-rich deep-sea hydrothermal vent. Chemical Geology, 533. 119438 doi:10.1016/j.chemgeo.2019.119438 | Journal (article/letter/editorial) | | biomineralization in an arsenic- and lead-rich deep-sea hydrothermal vent Si-Yu Hu, Stephen J. Barnes, Anais Pagès...biomineralization in an arsenic- and lead-rich deep-sea hydrothermal vent, Chemical Geology (2018), https://doi...biomineralization in an arsenic- and lead-rich deep-sea hydrothermal vent Si-Yu Hu1*, Stephen J. Barnes1, Anais...Unravelling complex microbial activity in modern hydrothermal vents can provide crucial insights into the...It is well established that microorganisms in hydrothermal vents have a significant impact on the cycling |  | Giorgetti, Giovanna, Monecke, Thomas, Kleeberg, Reinhard, Hannington, Mark D. (2006) Low-temperature hydrothermal alteration of silicic glass at the PACMANUS hydrothermal vent field, Manus basin: an XRD, SEM and AEM-TEM study. Clays and Clay Minerals, 54 (2) 240-251 doi:10.1346/ccmn.2006.0540209 | Journal (article/letter/editorial) | | LOW-TEMPERATURE HYDROTHERMAL ALTERATION OF SILICIC GLASS AT THE PACMANUS HYDROTHERMAL VENT FIELD, MANUS BASIN: AN...the submarine PACMANUS hydrothermal vent field exhibits variable degrees of hydrothermal alteration resulting...the glassy volcanic rocks with mineralizing hydrothermal fluids at relatively low temperatures. Transmission...investigations of the dacitic lava samples from the PACMANUS vent field demonstrate that volcanic glass has a higher...higher susceptibility to hydrothermal alteration at low temperatures than most associated primary phases |  | Pašava, Jan, Vymazalová, Anna, Petersen, Sven, Herzig, Peter (2004) PGE distribution in massive sulfides from the PACMANUS hydrothermal field, eastern Manus basin, Papua New Guinea: implications for PGE enrichment in some ancient volcanogenic massive sulfide deposits. Mineralium Deposita, 39 (7) 784-792 doi:10.1007/s00126-004-0442-z | Journal (article/letter/editorial) | | sulfides from the PACMANUS hydrothermal field, eastern Manus basin, Papua New Guinea: implications for...Satanic Mills vent sites in the PACMANUS hydrothermal field (Papua New Guinea) was studied and compared to...evidence for a magmatic component in the PACMANUS hydrothermal system indicate that leaching of back-arc...convecting hydrothermal system was the most important factor for PGE enrichment at PACMANUS and likely...enrichment Æ Volcanogenic massive sulfides Æ Hydrothermal vents Æ Manus basin Editorial handling: B. Lehmann J |  | | Journal (article/letter/editorial) | | microthermometry commonly develop new daughter crystals. Heating these inclusions induces the new daughter crystals to...changes of the fluid inclusions. This phenomenon of new mineral growth, presumed to represent the low-temperature...the determination of ice melting temperatures if new gypsum daughter crystals are present, and must determine...that crystallizes, among other settings, in hydrothermal 36 D.A. Vanko, W. Bach / Chemical Geology...35–45 ore deposits and geothermal systems. Hydrothermal anhydrite can be a good host for primary and |  | | Journal (article/letter/editorial) | | of Eastern Manus Basin Volcanic Rocks: Implications for Enrichment in Associated Hydrothermal Precipitates...O. Box 136, North Ryde, New South Wales 1670, Australia Abstract Hydrothermal precipitates associated...with active vents in the eastern Manus back-arc basin, Papua New Guinea, are among the most gold rich yet...yet discovered on the modern sea floor. The volcanic rocks associated with this mineralization were investigated...glass and glassy volcanic rocks from the eastern Manus basin ranges from <1 to 15 ppb and averages 6 ± 3 (1σ) |  | | Journal (article/letter/editorial) | | recognised for many years that the higher-T hydrothermal phenomena associated with the Cornubian batholith...ppm) associated with the highest temperature hydrothermal features. There is only occasional evidence...elements appear to be most enriched in the high-T hydrothermal fluids, some incompatible elements are most...fluids. Given the diversity of the SW England ore field, it is perhaps surprising that the main stage ore...fragments that have been discovered, on a separate field visit, in another location very close to that of |  | | Journal (article/letter/editorial) | | Distribution and solubility limits of trace elements in hydrothermal black smoker sulfides: An in-situ LA-ICP-MS study...seafloor might liberate trace elements to later hydrothermal alteration and removement. To investigate the...three different seafloor hydrothermal fields: the ultramafic-hosted Logatchev hydrothermal field on the Mid-Atlantic...ridge, and the felsic-hosted PACMANUS field in the Manus basin (Papua New Guinea). The sulfide samples were...consist predominantly of chalcopyrite, sphalerite, pyrite, galena and minor isocubanite as well as inclusions |  | | Journal (article/letter/editorial) | | Oreforming Processes in a Submarine IslandArc Hydrothermal System D. V. Grichuk Geological Faculty, Moscow...model suggested for oreforming processes in a hydrothermal system (HS) in an island arc is based on the...suggested earlier in [1] for simulating oreforming hydrothermal sys tems in midoceanic ridges. This technique...reactor and encompasses (a) the region where hydrothermal solutions are generated when seawater interacts...where the ore material is deposited (orebody). Hydrothermal sys tems in island arcs exhibit the following |  | Liao, Shili, Tao, Chunhui, Li, Huaiming, Barriga, Fernando J.A.S., Liang, Jin, Yang, Weifang, Yu, Junyu, Zhu, Chuanwei (2018) Bulk geochemistry, sulfur isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian Ridge. Ore Geology Reviews, 96. 13-27 doi:10.1016/j.oregeorev.2018.04.007 | Journal (article/letter/editorial) | | isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian...isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian...isotope characteristics of the Yuhuang-1 hydrothermal field on the ultraslow-spreading Southwest Indian...Guizhou, China Abstract ： The Yuhuang-1 hydrothermal field (HF) was discovered recently on the ultraslow-spreading...ultraslow-spreading Southwest Indian Ridge (segment 29). This field comprises two main sulfide deposition areas, including |  | | Journal (article/letter/editorial) | | single fluid-inclusion microanalytical techniques. New ideas concerning the genesis of the Angouran Zn–Pb...in the sedex field (sulphide orebody) and the other in the carbonate replacement field (‘oxide’ orebody)...local evidence of silicification with associated pyrite, which has largely obscured the original schistose...mineralization and subsequent erosion within the basin was followed by the deposition of over 300 m of...activity was followed by a period of intense hydrothermal activity in which the earlier ‘massive sulphides’ |  | McClenaghan, M. B., Beckett-Brown, C. E., McCurdy, M. W., Casselman, S. (2023) Stream Sediment Indicator Mineral Signatures of the Casino Porphyry Cu-Au-Mo Deposit, Yukon, Canada. Economic Geology, 118 (2) Society of Economic Geologists, Inc. 411-431 doi:10.5382/econgeo.4970 | Journal (article/letter/editorial) | | molybdenite, sphalerite, jarosite, goethite, and pyrite. In contrast, not all of these mineralogically...cost-effective and successful in the discovery of new mineral deposits in this glaciated terrain (e.g....surveys in any terrain, glaciated or otherwise, is new for commodities other than diamonds. In the unglaciated...Apatite, chalcopyrite, green epidote, jarosite, pyrite, titanite None Apatite (only mineral assessed)...elevation from approximately 1,000 to 1,800 m above sea level and compose the south part of the Klondike |  | Dusel-Bacon, C., Foley, N. K., Slack, J. F., Koenig, A. E., Oscarson, R. L. (2012) Peralkaline- and Calc-Alkaline-Hosted Volcanogenic Massive Sulfide Deposits of the Bonnifield District, East-Central Alaska. Economic Geology, 107 (7) 1403-1432 doi:10.2113/econgeo.107.7.1403 | Journal (article/letter/editorial) | | These polymetallic deposits are hosted in high field strength element (HFSE)- and rare-earth element...porphyry containing veins of fluorite, sphalerite, pyrite, and quartz intrudes the central footwall at Dry...spongy masses of pyrite. Sphalerite, the predominant base metal sulfide, encloses early pyrite framboids. Galena...Galena and chalcopyrite accompanied early pyrite formation but primarily formed late in the paragenetic...and Ag are present in low to moderate amounts in pyrite from all of the deposits; electrum inclusions occur |  | | Journal (article/letter/editorial) | | Cawthorn R. G. and Lee C. Bushveld Complex excursion field guide, 8th International platinum symposium (Johannesburg:...at ca 11% Zn and 1.4% Pb) lies in the Cantabrian basin of northern Spain. There are numerous other examples...cogenetic Zn–Pb mineralization within the basin. The basin lies above Hercynian basement and evolved...history of the basin is dominated by postHercynian crustal stretching culminating with sea-floor spreading...late Aptian, just ahead of the full development of sea-floor spreading in Biscay. The Reocín deposit lies |  | | Report (issue) | | U.S. GEOLOGICAL SURVEY Gold occurrences near Snowcap Mountain, Lime Hills B-2 quadrangle, Alaska by...summarize the results of geochcmical samples collected. Field and Analytical Methods Samples collected for geochemical...of at least 600 m in the Nunatak area south of Snowcap Mountain (figure 1). The veins are apparently sparse...arsenopyrite, chalcopyrite, and magnetite. Minor galena, pyrite, and sphalerite are also present. Erythrite (cobalt...arsenopyrite, chalcopyrite, pyrrhotite, magnetite, and pyrite. Minor amounts of molybdenite, covellite, and malachite |
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