| Mossman, D. J., Coombs, D. S., Kawachi, Y., Reay, A. (2000) HIGH-Mg ARC-ANKARAMITIC DIKES, GREENHILLS COMPLEX, SOUTHLAND, NEW ZEALAND. The Canadian Mineralogist, 38 (1) 191-216 doi:10.2113/gscanmin.38.1.191 | Journal (article/letter/editorial) | HIGH-Mg ARC-ANKARAMITIC DIKES, GREENHILLS COMPLEX, SOUTHLAND, NEW ZEALAND DAVID J. MOSSMAN§ Department...Geoscience, Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada DOUGLAS S. COOMBS, YOSUKE...Department of Geology, University of Otago, Dunedin, New Zealand ABSTRACT Minor dikes 8â70 cm thick of ankaramitic...were emplaced late in the crystallization of the Greenhills Complex, a layered dunite â wehrlite â hornblende...arc-derived Brook Street Terrane of southern New Zealand. Mg contents range from 10 to 28 wt% MgO. The | | | Journal (article/letter/editorial) | Kilkenny, granite, 847 Dawros, Connemara, Galway, chromite, chromian ceytonite, 957 Doochary, Donegal, granite...379 Turkey (Tiirkiye) Andtzhk-Ztmparahk area, chromite, chromit', 76 Thailand 'ferrit- Iran Maaden-e-Tala...replacing garnet (?), zircon, tourmaline, 579 Zaria region, tourmaline, 369 Congo (Kinshasa) Kobokobo, Kivu...Cuyuna Range, Minnesota, stilpnomelane, 693 Franklin, New Jersey, stilpnomelane, 693 Grande Ronde, Oregon,...Mt. Widderin, Ballarat, struvite, newberyite, 381 NEW SOUTHWALES Broken Hill, myrmekite, muscovite, 57o | | | Journal (article/letter/editorial) | evolution in platinum beach placers, southern New Zealand D. Craw & M. Mitchell & R. McCann & A. Reay ...western end of the beaches on the south coast of New Zealand. The incoming fluvial PGM suite includes Os,...Department, University of Otago, PO Box 56, Dunedin, New Zealand e-mail: dave.craw@otago.ac.nz size decreases...to PGM grains in placer deposits in southern New Zealand. The processes that have driven transportation...possible source areas and transport distances in the region. Most of the placers described in this study accumulated | | Chayka, Ivan F., Baykov, Nikolay I., Kamenetsky, Vadim S., Kutyrev, Anton V., Pushkarev, Evgenii V., Abersteiner, Adam, Shcherbakov, Vasily D. (2023) VolcanoâPlutonic Complex of the Tumrok Range (Eastern Kamchatka): An Example of the Ural-Alaskan Type Intrusion and Related Volcanic Series. Minerals, 13 (1) 126 doi:10.3390/min13010126 | Journal (article/letter/editorial) | Kamchatka [1,23â28], Venezuela [29], New South Wales [30,31], New Zealand [32], Siberia [2,33,34], Northwestern...intrusion and related volcanic rocks, give new data on chromite-hosted melt inclusions, and discuss co-magmatism...Primary reference materials for Cr-spinel were chromite NMNH 117075, gahnite NMNH 145883, diopside NMNH...V2 O3 , and MnTiO3 . Ilmenite (NMNH 96189) and chromite (NMNH 117075) were used as secondary standards...varies from 81â85,and, Al2 O 3 â1.5â4.0 wt.%, chromite (Mg# 35â50). Cr# value (Cr# = Cr/(Cr + Al)) varies | | | Report (issue) | In the Dry Butte terrane, a geologically similar region about 7 mi due south of Tincup Peak, Loney and...percent orthopyroxene, and less than 1 percent chromite and magnetite. Minor Iherzolite consists of 52...thrust sheets first noted by Irwin (1966) in this region of the Klamath Mountains, and the contact may therefore...texture or mineralogy preserved, specifically in the region near Tincup Creek; complete serpentinization is...rounded pyroxene clusters (fig. 10). Repeating chromite lenses and alternating pyroxene-richpyroxene-poor | | | Journal (article/letter/editorial) | localities, and authors mentioned in the 27th List of new mineral names are not included in this index. Aberchirder...France, anal., opt., X-ray, 78I Aguilarite, New Zealand, anal., synthesis, 96I Akagan6ite, formation...with calcite and quartz, 48I Aratiatia, Taupo, New Zealand, rhyolitic lavas, 424 Ardelach, Nairnshire, granite...oriented exsolved titanomagnetite in, 49 Axinite, New Zealand, manganoan, anal., opt., 374 AXON (H. J.) and...idocrase, 894 Andtzhk-Ztmparahk area, Turkey, chromite, Bayerite, conditions for synthesis, electron | | | Journal (article/letter/editorial) | coexisting accessory chromite (0.81â0.70). Subsequently, at subsolidus conditions, the chromite equilibrated...2001; Ionov et al., 2002). In this study we present new major and trace element data from rocks and minerals...consist of 97â99% olivine, and up to 2% of accessory chromite. Interstitial clinopyroxene is present in most...decimetres in size and consist of more than 80% chromite. Relictic olivine and clinopyroxene as well as...and other retrograde minerals are present along chromite grain boundaries as well as crosscutting cracks | | | Journal (article/letter/editorial) | originated from the mantle below the Pual Ridge region, which is interpreted to contain an ancient subduction...SimpliďŹed tectonic setting of the Manus Basin region behind the New Britain (NB) arc (modiďŹed after Taylor et...et al., 2002), and dunites of the Greenhills complex, New Zealand (Spandler et al., 2003), which strongly...xenoliths from TabarâLihirâTangaâLihir arc, Papua New Guinea and found that these rocks are enriched in...been Pt-rich alloy saturated at the mantle source region. 5.6. Identifying Pt-rich alloy saturation during | | | Journal (article/letter/editorial) | quadrangle wehrlite, Oregon Canyon â˘,!ountain New gabbro, pyroxene, and pyroxene diorite wehrlite...pyroxenite, websterite, chromite/chrome diopside cumulate and Zealand Greenhills Pahia wehrlite cortlandite...Magnetite 0.22 1.43 (6) AmphĂąbolĂąte/talc 0.085 Chromite 0.15 (2) (2) 0.21 (16) Chrome diopside Garnet...04 (2) O.OS (.4) 0.067 (4) 0.097 0.08 0.99 Zealand 0.026 0.019 0.15 0.02 0.033 0.66 (3) (2)...Greece 0.024 0.125 0.091 0.12 0.53 rocks from New Greenland 0.88 (2o) 0.072 (10) 0.06 (17) (3) | | | Journal (article/letter/editorial) | Oregon (Fig. 1). Alpine-type peridotites in the region are often metamorphosed and tectonized during a...One view into previous history is provided by chromite layers clearly associated with the existence of...strong disruption and discontinous nature of the chromite bands indicates that melting preceded the metamorphic...may be zoned from spinel-rich in the center to chromite-rich on the edge; this zoning indicates that more...stable during later stages of recrystallization. Chromite layers are often associated with large olivine | | Tian, W., Chen, B., Ireland, T.R., Green, D.H., Suzuki, K., Chu, Z. (2011) Petrology and geochemistry of dunites, chromitites and mineral inclusions from the Gaositai Alaskan-type complex, North China Craton: Implications for mantle source characteristics. Lithos, 127 (1) 165-175 doi:10.1016/j.lithos.2011.08.013 | Journal (article/letter/editorial) | Clinopyroxene inclusions Trace elements ReâOs isotopes Chromite Dunite North China craton a b s t r a c t The...whole-rock ReâOs isotope of the chromitites and chromite-rich dunites. The cpx inclusions have chemical...concentrically zoned occurrence of dunite and chromite in the core, surrounded by a successive shells...minerals, such as high Mg# olivine and high Cr# chromite can be used to infer the chemical compositions...Experimental studies have shown that olivine and chromite can be used to calculate the temperature and oxygen | | | Journal (article/letter/editorial) | metamorphic core complexes in the Otago Schist, New ZealandâM.A. Forster and G.S. Lister Can the role of...the YukonâTanana terrane in the Finlayson Lake region, Yukon, CanadaâStephen J. Piercey, James K. Mortensen...Thomas R. Hart Petrogenesis of the Greenhills Complex, Southland, New Zealand: Magmatic differentiation and...JOURNALS DOKLADY EARTH SCIENCES Vol. 389, No. 1â2, 2003 New data on geochemistry of the oldest (2.95â3.05 Ga)...sites, Greater Blue Mountains World Heritage area, New South Wales, Australia âJennifer Harrison, Hendrik | | | Journal (article/letter/editorial) | Islands (Elthon et al. 1982; Komor et al. 1985) in New Foundland, Halmahera (Ballantyne 1992) in Indonesia]...arc tectonic settings [Greenhills complex (Spandler et al. 2003) in New Zealand, Aleutian Islands (DeBari...the best exposed and most documented part in the region. Five northâsouth-trending tectonostratigraphic...Neotethyan ophiolites in the eastern Mediterranean region (from Robertson 2002). Triassic. The pre-rift...represented mainly by harzburgite and dunite with chromite pods. The tectonites are observed in Adrasan, | | | Journal (article/letter/editorial) | different in terms of their origin and mechanism of chromite accumulation, may host inclusions of fluids, silicates...Khedr and Arai, 2016a, b, 2017). The origin of chromite-hosted inclusions in banded chromitites, and the...inclusion-forming hydrous melts/fluids during chromite formation are still quite unclear. The banded...of chromitites in Alaskan-type complexes, where chromite grains segregated as bands or layers in dunites...(Helmy and Mogessie, 2001; Helmy, 2004), besides chromite deposits (Dixon, 1981; Khedr and Arai, 2016b) | | Sano, S., Offler, R., Hyodo, H., Watanabe, T. (2004) Geochemistry and Chronology of Tectonic Blocks in Serpentinite MĂŠlange of the Southern New England Fold Belt, NSW, Australia. Gondwana Research, 7 (3) 817-831 doi:10.1016/s1342-937x(05)71066-2 | Journal (article/letter/editorial) | Tectonic Blocks in Serpentinite M6lange of the Southern New England Fold Belt, NSW, Australia S. Sanol, R. Offle...melange of the Peel-Manning Fault System, southern New England Fold Belt, Australia. â h o meta-diorite...geochemistry, geochronology, southern New England Fold Belt. Introduction The New England Fold Belt (NEFB) extends...al., 1987; Coney et al., 1990). In the southern New England Fold Belt (SNEFB), Late Silurian to Carboniferous...the protoliths were derived. This paper reports new Rb-Sr and Sm-Nd isotope data, 40Ar/39Arage results | | | Journal (article/letter/editorial) | structure and new dataâ Uwe Kolitsch and Gerald Giester Dukeite, Bi3+24Cr6+8O57(OH)6¡(H2O)3, A new mineral...Santacroce, and A. Sbrana Rollandite, Cu3(AsO4)2¡4H2O, A new mineral: Its description and crystal structureâH...mineralization in the southeastern Transbaikal region (Russia)âL.P. Ishchukova and L.V. Serdyuk 414...layered intrusions: Application to the Greenhills complex (New Zealand), a platinum group minerals-bearing...Monhemius B95 Platinum-group element distribution in chromite ores from ophiolite complexes of western TurkeyâA | | Simonov, V.A., Puchkov, V.N., Prikhodâko, V.S., Stupakov, S.I., Kotlyarov, A.V., Karmanov, N.S., Stepanov, A.S. (2016) Physicochemical conditions of crystallization of dunites of the Nizhnii Tagil Pt-bearing massif (Middle Urals) Russian Geology and Geophysics, 57 (6) 868-890 doi:10.1016/j.rgg.2015.05.015 | Journal (article/letter/editorial) | their similarity to melt inclusions trapped by chromite during its growth. The analyzed Cr-spinels with...(syngenetic) multiphase silicate microinclusions in ore chromite from the Nizhnii Tagil massif, trapped as relics...coarsegrained massive rocks with disseminated chromite, which is clearly seen on the yellowish brown...recrystallization (Shmelev and Filippova, 2010). Chromite in the dunites is often grouped in schlieren,...shapes and structureâtextural types is typical of chromite bodies. Syn- and epigenetic ores are distiguished | | | Report (chapter) | continental margin of SE Gondwana (South Island, New Zealand): summary and overview ALASTAIR H. F. ROBERTSON1*...Avalon, Lower Hutt 5010, New Zealand 3 395 Trafalgar Street, Nelson 7010, New Zealand H.J.C., 0000-0002-6845-0126;...chapter build on previous work, while in some cases new, or revised, interpretations are proposed. Preferred...Mortimer et al. 2017). Readers unfamiliar with New Zealand geology will ďŹnd background information in Johnston...timescale of Gradstein et al. (2012) and the New Zealand timescale of Cooper (2004), as perfected by Raine | | | Book | Perth AMSTERDAM ⢠BOSTON ⢠HEIDELBERG ⢠LONDON NEW YORK ⢠OXFORD ⢠PARIS ⢠SAN DIEGO SAN FRANCISCO â˘...practice in this field are constantly changing. As new research and experience broaden our understanding...and human beings. When I first visited Sukinda chromite belt in 1964, it was a sleeping hamlet, gifted...the area was only for small-scale production of chromite ore for the indigenous market. M/s Ferro Alloys...thesis on the Sukinda chromite deposits of Orissa, India. Mining for chromite had just begun in the country | | | Book | 411 ⢠New Hebrides NewCaled~ ⢠⢠Norfolk I. Lord Howe I. ⢠SOUTH PACIFIC OCEAN SEA NEW ZEALAND...BASIN I , .. The Geological Structure of New Zealand a volume in the REGIONAL GEOLOGY SERIES edited...the Oligocene, Landon Limestone Photograph: New Zealand National Publicity Studio photo J'ublished...STRUCTURE OF NEW ZEALAND J . T. Kingma I , ⢠THE GEOLOGICAL STRUCTURE OF NEW ZEALAND JACOBUS T. KINGMA...Wiley-lnterscience Publication JOHN WILEY & SONS New York⢠London⢠Sydney⢠Toronto I \ ⢠' Copyright | | Mohanty, Niranjan, Singh, Surya Pratap, Satyanarayanan, Manavalan, Jayananda, Mudlappa, Korakoppa, Madiwalappa Mallappa, Hiloidari, Sikha (2019) Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India. Geological Journal, 54 (4) 2099-2123 doi:10.1002/gj.3286 | Journal (article/letter/editorial) | clinopyroxene (Cpx), amphibole (Amp), Alâchromite, Feâ chromite, and magnetite with rare orthopyroxene...showing both homogeneous and zoned texture. Alâchromite, primarily characterizes Crâspinels and its subsequent...of Feâchromite, chrome magnetite, and magnetite. Mineral chemistry data suggest that Alâchromite is characterized...TiO2 (0.22â0.67 wt.%), whereas the homogeneous Feâchromite type is characterized by high Fe2O3 (25.54â47...53 wt.%). Subsequent alteration of Alâchromite and Feâchromite leads to formation of Crâmagnetite and | | | Journal (article/letter/editorial) | been trapped in the earliest crystallising phase, chromite. Due to their early entrapment at high temperatures...Analysis of these droplets in an opaque mineral like chromite by LA-ICP-MS is problematic as some of the fractionated...been trapped in an early forming host mineral, chromite. As these have been trapped at a very early stage...sulfide inclusions in an opaque mineral such as chromite are homogenized and quenched quickly before cutting...inclusions of sulfide in early forming minerals such as chromite or olivine. In addition to determining the initial | | Barkov, Andrei Y., Nixon, Graham T., Levson, Victor M., Martin, Robert F., Fleet, Michael E. (2013) CHROMIAN SPINEL FROM PGE-BEARING PLACER DEPOSITS, BRITISH COLUMBIA, CANADA: MINERALOGICAL ASSOCIATIONS AND PROVENANCE. The Canadian Mineralogist, 51 (4) 501-536 doi:10.3749/canmin.51.4.501 | Journal (article/letter/editorial) | analyzed spinel-group minerals are members of the chromiteâmagnesiochromite solid-solution series, and extend...the placers using the global spinel database and a new one focusing on Alaskantype intrusions. Chromian...central British Columbia (Manson Creek â Cariboo region) display a mixed heritage involving both ophiolitic...intrusions are presently poorly represented. Keywords: chromite, magnesiochromite, chromian spinel, platinum-group...example, the WellsâBarkerville area in the Cariboo region of central British Columbia has been the most productive | | Chen, Bin, Suzuki, K., Tian, W., Jahn, B. M., Ireland, T. (2009) Geochemistry and OsâNdâSr isotopes of the Gaositai Alaskan-type ultramafic complex from the northern North China craton: implications for mantleâcrust interaction. Contributions to Mineralogy and Petrology, 158 (5) 683-702 doi:10.1007/s00410-009-0404-7 | Journal (article/letter/editorial) | 1994), Indonesian (Zientek et al. 1992) and New Zealand (Spandler et al. 2003). They are small, elliptical...chromitite mineralization (Wang et al. 1983). Our new zircon UâPb ages (ca. 280 Ma) suggest it was genetically...substitution of Cr3? by Al3? in octahedral sites of chromite (Barnes and Roeder 2001). 123 Clinopyroxenes...2000, 2008; Xiao et al. 2003). As indicated by our new zircon UâPb ages (*280 Ma), the Gaositai complex...International Mineralogical Association, Commission on New Mineral Names. Can Mineral 35:219â246 Li JJ, Shen | | | Journal (article/letter/editorial) | Coleman, 1989), arc-related cumulates in southern New Zealand (Spandler et al., 2003), the Table 3 Minimumâmaximum...setting. Island Arc 20, 125â137. Barnes, S.J., 1998. Chromite in komatiites, 1. Magmatic controls on crystallization...Late Proterozoic crustal evolution of the Midyan region, northwestern Saudi Arabia. Geology 13, 611â615...Mineralogist 62, 1018â1029. El Ramly, M.F., 1972. âA new geological map for the basement rocks in the Eastern...peridotites. Nature 410, 677â681. Hey, M.H., 1954. A new review of the chlorites. Mineralogical Magazine 30 |
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