 | | Report (issue) | | Turku, Finland. ^Geological Survey of Norway, Trondheim, Norway. Geological Survey of Sweden, Uppsala...bibliography on mineralized and unmineralized mafic-ultramafic intrusions in Scandinavia Compiled by Gerald...University of Turku Rognvald Boyd, Geological Survey of Norway Gunnar Nilsson, Geological Survey of Sweden These...Program entitled "Sulfide deposits in mafic and ultramafic rocks." They are part of a series of bibliographies...mineralization or ore deposit or dissemination or mine ultramafic or ultrabasic or dunite or perioditite or harzburgite |  | | Journal (volume) | | Ni-Cu deposits in mafie and ullramafie imrusive rocks. Thc most imponant of the orebearing areas are:...Sweden, the historical nickel mines in southern Norway , and the Räna intrusion in the orwegian Caledonides...copper ores, intrusive rock s, mafic composition, ultramafic cOlllposition, Haltic Shield, Ca ledon ides,... Precambrian, USSR, Finland, Sweden, Norway REFERENCES: General reference: PAP UNEN, H . & GORBUNOV... Geological Survey of Norway, Leiv Eiriksons vei 39, N-7oo0 Trondheim, Norway Geological Survey of Sweden |  | | Journal (article/letter/editorial) | | quartz-feldspar gneiss, amphibolite, and metagranitic rocks. The rocks are probably Precambrian in age and have been...genetically related to a basic magma. The only mafic rocks in the area are amphibolites that are characterized...intrusions of the two fractions into the country rocks account for the absence of the impregnation and...cataclastic deformation that affected the country rocks. The author believes that the ores probably formed...metamorphic episodes can be distinguished in the basement rocks of the Pancarli area, i.e., eclogite-facies metamorphism |  | Zhang, Huichao, Chai, Peng, Zhang, Hongrui, Hou, Zengqian, Chen, Shouming, Sun, Yanbin, Peng, Qing (2019) Two‐Stage Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW China): Implications for Metallogenic Evolution. Resource Geology, 69 (3) 270-286 doi:10.1111/rge.12201 | Journal (article/letter/editorial) | | Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW...belt (SW China), is hosted in various types of rocks, including in quartz porphyry, carbonaceous slate...altered ultramafic rocks. In contrast to other wall rocks, the orebodies in altered ultramafic rocks are...process of the orebodies hosted by altered ultramafic rocks can be divided into two stages: pyrite-vaesite-native...pyrite-vaesite-native gold and gersdorffite-violarite stages. The contents of As and Sb increased during the evolution |  | | Book | | Economical Potential of an Ultramafic Rock at the Kvaløya Island, North Norway . . . . . . . . . . . . ...competition during the 10th ICAM in Trondheim, Norway, in 2011, China won the votes to host the 11th...1991 1989 1984 1981 Mianyang, China Trondheim, Norway Brisbane, Australia Aguas de Lindoia, Brazil Göttingen/Hannover...Istanbul, Turkey Geological Survey of Norway (NGU), Trondheim, Norway Mintek, Johannesburg, South Africa...Qianwang Feng Qiming He Hongping Zhao Qinling China Norway Australia Hong Kong Canada USA Turkey Brazil China |  | | Report (issue) | | the metabasaft which underlies the ore-bearing ultramafic formation. The concentrating plant lies just.................................. Queen Victoria Rocks prospect ... ...........,............. .................................... Digger R uth Digger Rocks deposits Fireball prospect .......................Block showing distribution of olivine-rich ultramafic rocks, major structures and nickel deposits (Scale...nomenclature of ultramafic and related mafic rocks ... 26 Textural types in ultramafic rocks ........... |  | | Journal (article/letter/editorial) | | porphyry and carbonated ultramafic rocks (carbonated serpentinite, talc–carbonate rocks, and listwaenite)....pyrite– violarite– millerite– chalcopyrite assemblage formed in carbonated ultramafic rocks during hydrothermal...magnesite, postdated magnetite in carbonated ultramafic rocks. Compared with serpentinite, Ni, Co, Cu, Mn...Mn, and Pb concentrate in talc–carbonate rocks. The fact that the NiO contents of magnetite decrease...Hydrothermal nickel deposit; Serpentinite; Talc–carbonate rocks; Jianchaling 1. Introduction Hydrothermal nickel |  | | Journal (article/letter/editorial) | | pp. 141–163. Ore Mineralization in Ultramafic and Metasomatic Rocks of the Ospin–Kitoi Massif, Eastern...Received July 20, 2015 Abstract⎯In the Ospin–Kitoi ultramafic massif of the Eastern Sayan, accessory and ore...Copper–nickel mineralization hosted in serpentinized ultramafic rocks occurs as separate grains of pentlandite and...and retrograde metasomatism of primary rocks. Keywords: ultramafic rock, sulfide and noble metal mineralization...2014b). When the ore component in ophiolitic ultramafic rocks is studied, the main focus is on chromite |  | | Journal (article/letter/editorial) | | Springer-Verlag 1973 T h e Opaque Minerals of the Ultramafic Rocks of N e w Caledonia J. H. GUILLON, Paris...e n s i n g t o n , Sydney, Australia The ultramafic rocks of New Caledonia contain a diversity o~ disseminated...nickel inherent in the silicate minerals of the ultramafic rocks. Les roches ultramafiques de la Nouvelle-Cal6donie...roches ultramafiques. Introduction T h e ultramafic rocks of N e w Caledonia comprise a sequence of...sheets of serpentinite and are referred to as "ultramafic massifs" (RouTI-IIER 1951; AValS 1955, 1967; |  | | Journal (article/letter/editorial) | | Minerals and Economic Geology of the Nemeiben Ultramafic Complex, Saskatchewan, Canada N. D. Macfarlane*... Canada The main rock types of the Nemeiben ultramafic complex form grossly concentric layers of clinopyroxenite...clinopyroxenite, websterite, wehrlite and dunite. These rocks were partially amphibolitized late in the Hudsonian...developed in altered ultrarnafic rocks. Magnetite and hematite, bravoite, violarite and millerite are among the...the mineralogy and petrology of the Nemeiben ultramafic complex. The present paper focuses on the opaque |  | | Journal (article/letter/editorial) | | Ishkinino Co–Cu Massive Sulfide Deposit Hosted in Ultramafic Rocks of the Main Ural Fault Zone, the Southern...Ishkinino Co–Cu massive sulfide deposit hosted in ultramafic rocks of the Main Ural Fault Zone are discussed...contained in rocks and ore correspond to Cr-spinel of suprasubduction ultramafic rocks in chemical composition...the presently active island arcs composed of ultramafic sheets. DOI: 10.1134/S1075701506030019 INTRODUCTION...Eurasia, is 10–20 km wide and separates metamorphic rocks of the Uraltau from volcanic complexes of the Magnitogorsk |  | | Journal (article/letter/editorial) | | depthof 10mbyopenpits. cally unusual mafic-ultramafic rocks occur along smallshear No miningactivities...included tion. In the Abu Swayel mine the mafic-ultramafic rockis a deepening theshaftto 69 m, butthe resultsshowed... Relevant studies on this area include those northeast, bodycomprises two amby Nassim(1943,1949),Bassyouni...E1Goresy(1964), biotiteschist.The mafic-ultramafic phibole rocks; coarse grained in the hanging wall and...dipping65øto 70øto the northeast. and age of emplacement of these amphibole rocks are equivodiscuss thepetrogenesis |  | Konnunaho, J. P., Hanski, E. J., Bekker, A., Halkoaho, T. A. A., Hiebert, R. S., Wing, B. A. (2013) The Archean komatiite-hosted, PGE-bearing Ni–Cu sulfide deposit at Vaara, eastern Finland: evidence for assimilation of external sulfur and post-depositional desulfurization. Mineralium Deposita, 48 (8) 967-989 doi:10.1007/s00126-013-0469-0 | Journal (article/letter/editorial) | | consisting of pyrite, pentlandite, millerite, violarite, and chalcopyrite accompanied by abundant magnetite...the eastern Finland greenstone belts, the Vaara rocks are moderately enriched in LREE relative to MREE...magnetite and the presence of millerite- and violarite-bearing, pyrrhotite-free sulfide assemblages indicate...environments where thermomechanical erosion of the host rocks was most efficient (e.g., Lesher et al. 1984; Lesher...The range of δ34S values in Archean supracrustal rocks is much smaller than that in Phanerozoic examples |  | Jesus, A.P., Mateus, António, Benoit, Mathieu, Tassinari, C.C.G., Bento dos Santos, Telmo (2020) The timing of sulfide segregation in a Variscan synorogenic gabbroic layered intrusion (Beja, Portugal): Implications for Ni-Cu-PGE exploration in orogenic settings. Ore Geology Reviews, 126. 103767pp. doi:10.1016/j.oregeorev.2020.103767 | Journal (article/letter/editorial) | | intrusion, part of the Palaeozoic Caledonian suites in Norway, developed in transient marginal back-arc basin...(iii) the roughly coeval and larger mafic ( ± ultramafic) Appalachian intrusions in USA that were emplaced...study on three sulfide occurrences and their host rocks, including sulfide phase chemistry, incompatible...enriched in Fe-Ti-V oxides, particularly the ultramafic cumulates at the basis of Lower Group, wherein...leucogabbro with a range of variable grain-sizes. Ultramafic cumulates (medium-grained clinopyroxenites and |  | | Journal (article/letter/editorial) | | g/t Pt) is hosted by brecciated mafic–ultramafic volcanic rocks of the Bear Lake mafic unit in the vicinity...chalcopyrite, pyrrhotite, pyrite, with minor violarite, pentlandite, nickeloan pyrite, marcasite, sphalerite...sulfides, hydrothermal, mafic– ultramafic volcanic and intrusive rocks, Flin Flon greenstone belt, Bear...sont chalcopyrite, pyrrhotite, et pyrite, avec violarite, pentlandite, pyrite nickelifère, marcasite, sphalérite...Proterozoic pyroxenitic and gabbroic rocks with mafic–ultramafic volcanic units. Mainly on the basis of |  | | Journal (article/letter/editorial) | | pyrrhotite, pentlandite, millerite, polydymite, violarite, siegenite, gersdorffite, cobaltite, chalcopyrite...contents, the latter two typical of ultrabasic rocks. The more advanced alteration stage shows lower...(listwanite) is generally used for metasomatic rocks, products of strong transformation (carbonatization...(carbonatization, silicification) of primary ultrabasic rocks in ophiolite complexes of various ages (e.g., Sazonov...et al. 2006). Listvenitization of the ultrabasic rocks belongs to mesothermal processes, where the study |  | | Journal (article/letter/editorial) | | -magnetite-"violarite",with the previously unrecordedassemblagepyrite-vaesite-"violarite"occurring in...in some talc-carbonate rocks. Although interstitial sulfide textures and relic pyrrhotite-pentlandite...mineralized serpentiniteand with disseminated"violarite" in near-barren serpentinite. Progressive release...Introduction and Regional Setting older mafic-ultramafic metavolcanic association and rock associaTaE...pyrite-milleritedeposit locatedwithin an intrusive ultramafic body (Fig. 1), and differsmarkedlyfrom most Western |  | | Journal (article/letter/editorial) | | chemistry of sulphides were investigated in 63 rocks from the Fiskenæsset complex, West Greenland, by...being especiaIly concentrated in the ultramafic zone and in ultramafic lenses in the higher zones. Sulphide...cobalt-pentlandite, polydymite, godlevskite, violarite, cubanite, and digenite. Most sulphides occur...Pyrite-millerite appears to be an equilibrium pair in some rocks. Weathering affects the major phases in the folIowing...progression from Ni,Fe-rich sulphides in the lower ultramafic and mafic zones to Cu,S-rich assemblages in the |  | | Journal (volume) | | three types of granites and rocks of the greenstone-belt association: ultramafic sills and extrusions, mafic...the ultramaficfelsic parts of the greenstone belt rocks: Hietaharju and Peura-aho. On the basis of geochemical...whole-rock analyses and petrographie evidence, the ultramafic rocks are considered as cumulates of basaltic extrusives...tholeiitic, subalkalic trend. Some uHramafic and mafic rocks of komatiitic composition occur among the analysed...analysed sampIes. The MgO contenrt of the ultramafic rocks is 26-27 wt. 010, corresponding to peridotite. |  | | Journal (article/letter/editorial) | | and metal alloys are common in serpentinized ultramafic rocks, generally representing the redox and sulfur...magnetite, awaruite, pyrrhotite, heazlewoodite, violarite, smythite and copperbearing sulfides (Cu-pentlandite...is a widespread process that is found where ultramafic rocks react with seawater, hydrothermal fluids or...sulfide and oxide assemblages have been studied in ultramafic bodies tectonically emplaced on continents (Eckstrand...where detachment faulting causes exposure of ultramafic rocks to seawater inducing extensive serpentinization |  | Xue, Shengchao, Li, Chusi, Wang, Qingfei, Ripley, Edward M., Yao, Zhuosen (2019) Geochronology, petrology and Sr-Nd-Hf-S isotope geochemistry of the newly-discovered Qixin magmatic Ni-Cu sulfide prospect, southern Central Asian Orogenic Belt, NW China. Ore Geology Reviews, 111. 103002 doi:10.1016/j.oregeorev.2019.103002 | Journal (article/letter/editorial) | | csuxsc@163.com 1 Abstract The Qixin mafic-ultramafic complex is present in the southern margin of...blotchymassive sulfides in the hornfels country rocks. The disseminated sulfides are composed of pyrrhotite...blotchy-massive sulfides in the country rocks are composed of pentlandite, violarite, pyrrhotite and chalcopyrite...those from the older, subduction-related mafic-ultramafic intrusions in the region. This and other arc-like...processes, similar to other contemporaneous mafic-ultramafic intrusions in the region. Mixing calculations |  | | Journal (article/letter/editorial) | | alAssemblages by Alteration Reactions in Ultramafic Rocks O. R. ECKSTRAND Abstract Various distinctive...encountered in barren and weakly mineralized ultramafic rocks. The minerals include awaruite, heazlewoodite...heazlewoodite, pentlanditc,millerite, and violarite but few, if any, iron sulfides. Using the Dumont ultramaficbody...contrastto the barren or weakly mineralized ultramafic rocks, consist mainly of iron sulfides(pyrrhotite+_pyrite)...alteration reactions in ultramafic SaoRTr.¾after discoveryin 1970 of the Dumont rocks is advanced. The model |  | | Journal (article/letter/editorial) | | Cu–Ni–PGE MINERALIZATION IN THE GENINA GHARBIA MAFIC–ULTRAMAFIC INTRUSION, EASTERN DESERT, EGYPT HASSAN M. HELMY§...Gharbia intrusion is a small late Precambrian mafic–ultramafic complex in the Eastern Desert of Egypt. It comprises...original contacts have been obliterated. The various rocks are characterized by high modal content of magnesiohornblende...pyrrhotite >> pentlandite = chalcopyrite >> pyrite = violarite = cubanite and minor cobaltite–gersdorffite, nickeline...commonly is associated with sulfides in gabbroic rocks, in which the silicate assemblage is dominated by |  | | Report (volume) | | _______________________________ Bravoite and violarite ______________________________ ---Vaesite----...percent, or 150 times the content of the crustal rocks in which the deposits occur. There are two principal...weight percent (Fleischer, 1953). IDtramafic igneous rocks-dunite, peridotite, and pyroxenite-contain the most...of these rocks to be 0.12 percent. His estimates for other rock types are: mafic igneous rocks (basalt...gabbro, norite, and related rocks) 0.016 percent; neutral igneous rocks (diorite, andesite), 0.0055 percent; |  | Godel, B., Gonzalez-Alvarez, I., Barnes, S. J., Barnes, S.-J., Parker, P., Day, J. (2012) Sulfides and Sulfarsenides from the Rosie Nickel Prospect, Duketon Greenstone Belt, Western Australia. Economic Geology, 107 (2) 275-294 doi:10.2113/econgeo.107.2.275 | Journal (article/letter/editorial) | | segregation of immiscible sulfide liquid from mafic to ultramafic magmas (Naldrett, 2004). In these deposits, the... Sulfarsenide and arsenide minerals in mafic-ultramafic magmatic systems may contain high concentrations...minerals have been described in samples from mafic-ultramafic intrusions, lherzolite, or chromitite massifs...gneiss Greenstone 28º Proterozoic sedimentary rocks Waterloo Nickel mine Windarra LAVERTON 50 km...Fine-grained mafic rocks Granitoid rocks Paleoproterozoic rocks Ultramafic rocks Quartzofeldspathic |
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