 | | Report (chapter) | | 2015 Magnetic mineralogy of sandstones from the Lunde Formation (late Triassic), northern North Sea, UK:...for the magnetic properties of the Late Triassic Lunde Formation have been examined using a combination...ferrimagnetic oxides (chromite and Mn-substituted magnetite) is responsible for the remanence properties in...(ferrimagnetic ilmenite, ferrimagnetic chromite and magnetite), although authigenic hematite has replaced most...Triassic palaeomagnetic signal is carried by magnetite as inclusions in detrital silicates, with a contribution |  | | Report (chapter) | | correlations in two cores from the late Triassic Lunde Formation, Beryl Field, northern North Sea, UK MARK...magnetostratigraphy of two cores from the late Triassic Lunde Formation of the northern North Sea are compatible...of correlation and dating in the late Triassic Lunde Formation, which despite its Triassic age is predominantly... 9/13A-36 (situated - 1 5 k m apart) from the Lunde Formation, Beryl Field, northern North Sea (Fig...is divided into three formations, the Statfjord, Lunde and Lomvi Formations, based largely on its response |  | | Journal (article/letter/editorial) | | address: Geologisk Institutt, N-7034 Trondheira.NTH, Norway. Bouve,tOya is situated at the southern end of...volcaric eruptions have not been observed, but Lunde (1965) and Baker & Tomblin (1964) considered the...(Westwindstranda} to be the result of a small eruption. Lunde considered this eruption to be sub~tquafic. Fumaroles...Fumaroles occur in the northwestern part of the island (Lunde, op. cir.; Baker 1967; Winsnes 1966). LITHOS 10...are K-rich oligoclase (Table 1), clinopyroxene, magnetite 218 lmsland et al. LITHOS 10 (1977) Fig. 4 |  | | Journal (article/letter/editorial) | | heating to about 500"C for a few minutes. Barth and Lunde (1927) reported this bleaching at 300oC.We found...to slight tetragonality as suggestedby Barth and Lunde (1927) tor villiaumite from Rouma. The powder data...oxygen buffers, hematite-magnetite (Eugster and Wones, 1962), and fayalite-magnetite-quartz (Wones and Gilbert...close to that defined by the synthetic fayalite-magnetite-quartzbufter, then at 850'C villiaumite will form...(FMQ) (Eugster assemblage hematite-magnetite (IIM) and fayalite-magnetite-quartz and Wones, 1962; Wones and |  | | Journal (article/letter/editorial) | | of hypersthene (host) with ilmenite and minor magnetite (vermicules) in a gabbroic sill from the Precambrian...intergrowths of pyroxene (host) with ilmenite and/or magnetite (vermicules) have been reported from many different...ander surface conditions. l~yroxene-ilmenite/magnetite symplectites may l~e more widespread than commonly...of the high content of disseminated ilmenite/magnetite. The present paper reports the results of a petrographic...investigation of such hypersthene--ilmenite (/magnetite) intergrowths (Fig. 1) "~n olivine-gabbronofites |  | | Report (chapter) | | base, is overlain by the Lomvi Formation, with the Lunde Formation at the top. The overlying Statt]ord Formation...mineral assemblages in sandstones from the uppermost Lunde and Statfjord Formation of the Snorre Field are...Apatite is consistently present in the uppermost Lunde Formation, but is absent in many Statfjord Formation...difference between the distribution of apatite in the Lunde and Statt]ord Formations may therefore be related...from the semi-arid environment prevalent during Lunde Formation times to the humid environment prevalent |  | | Journal (article/letter/editorial) | | According to Bragg, the distanceZd (I00) for magnetite is 4.15 A. U. ln the case of the Ceylon spinel...least close to magnetite"and'possibly the same, while chromite lies between magnetite and spinel. Cnnurcar...1915-16, p. 199. 13V. M. Goldschmidt, T. Barth u. G. Lunde, Norsk Vidensk.-Akad.., Oslo, Mat.-naturv. Kl., |  | | Journal (article/letter/editorial) | | February 21, 1884. Micrasterias brachyt)tera, Lunde]l, collected i,~ tI%stmoreland by Dublin Microscopical...having two specimens of .Microsterias brachy2tera, Lunde]l) from near Ambleside, in Westmoreland--the first...crystals of hornblende, triclinie felspar, and magnetite imbedded in a glassy paste. The polarization of |  | | Journal (article/letter/editorial) | | from veins in a granite near Drammen in southern Norway. RANKAMA and SAKAMA (1949) have also recorded the...I 10 Magnetite, Sikusi, Mbale Magnetite, Nangalwe, Mbale Magnetite, Namekara, Mbale Magnetite, Lolekek...Lolekek, Karamoja Magnetite from granite, Entebbe Micaceous haematite, Mengo Haematite, Butale, Kigezi Haematite...:ock Fraction Quartz-felspar Magnetite rlmenite ( + a little magnetite) Zircon, biotit,e, garnet and...Europe (HH) Granite, Harz, Germany (NN) Granite, Norway (NN) Granite, Andes (NN) Basalt, Kaiserstuhl (NN) |  | | Journal (article/letter/editorial) | | Fe-carbides (catalyzing hydrocarbon production) and magnetite (active in the WGS reaction, e.g., Davis, 2009)...catalyst was prepared using natural commercial magnetite from Olenegorsk mine, by reduction in a flow of...450 °C and 5 MPa during 24 h. The Olenegorsk magnetite contains about 0.02% of reduced carbon (Taran...liquid fraction. Despite the Fe catalyst (the magnetite fraction) is known to catalyze the WGS reaction...synthetic gas), forms carbides and is oxidized to magnetite, active in WGS reaction (Riedel et al., 1999) |  | | Journal (article/letter/editorial) | | caused by the dilution of a constant detrital magnetite flux by variations in the accumulation rate of...magnetostratigraphy; (3) assuming a constant magnetite accumulation rate and using it to generate a chronology...driven by the modulation of a constant detrital magnetite flux by variations in the sedimentation rate of...1986. [24] G.E. Birchfield, J. Weertman and A. Lunde, A paleoclimate model of Northern Hemisphere ice |  | Maries, Georgiana, Malehmir, Alireza, Bäckström, Emma, Schön, Monika, Marsden, Paul (2017) Downhole physical property logging for iron-oxide exploration, rock quality, and mining: An example from central Sweden. Ore Geology Reviews, 90. 1-13 doi:10.1016/j.oregeorev.2017.10.012 | Journal (article/letter/editorial) | | consisted of density, rock quality designation and magnetite Ϯϰ content measurements. Full-waveform sonic...The mineralization in Blötberget consists of magnetite and hematite, and additionally apatite and ϭϮϳ...more than 50% of iron ϭϮϴ dominantly from magnetite but also hematite at distinct horizons. Hematite...Hematite ores are less massive than the ϭϮϵ magnetite ones and their skarn mineralogy is slightly different...measurements including density, magnetic susceptibility, magnetite and iron content ϭϰϳ (as well as other minerals) |  | | Report (chapter) | | now known to produce chains of single domain magnetite grains, apparently in order to determine 'way...presence of such organisms. It seems probable that magnetite-bearing bacteria may also be of far greater importance...Vesuvius.) The importance of biologically produced magnetite is considered by Maher & Hounslow (this volume)...predominantly for Quaternary sediments and soils. Such magnetite is potentially of great palaeomagnetic importance...processing essentially removed most of the 'standard' magnetite and hematite that normally carry the remanence |  | | Journal (article/letter/editorial) | | Provenance; Heavy minerals; Environmental magnetism; Magnetite; Fe-oxides; Hydrocarbon reservoirs * Corresponding...minerals most commonly used as the dtracersT are magnetite and hematite, which can display mineralogical...states, although probably frequently close to magnetite in composition. High coercivity phases such as...discrete magnetic components due to magnetite, ilmenite and magnetite (Alekseeva and Hounslow, 2004). This...mT). ARM is particularly strongly acquired in magnetite with single-domain behaviour (i.e. physical grain |  | | Report (chapter) | | indicate that ilmenite is much less reactive than magnetite and other detrital magnetic minerals. Given the...3f). N o spinel phase iron oxide (ulv6spinel-magnetite solid solution series) grains were observed (except...l FeO ~ FezTiO5 X (Pseudobrookte) ""~ Fe304 (Magnetite) FezO3 (HernaUte) Fig. 4. The iron-titanium...(1977), which is strictly applicable only to magnetite or titanomagnetite compositions, the hysteresis...103 which is consistent with the presence of magnetite (see Hunt et al. 1995). On cooling, susceptibilities |  | | Report (issue) | | Triassic red-bed sandstone of the Lunde Formation, offshore Norway (S. Morad, unpublished data) occurs...kaolinite in reservoir sandstones from offshore Norway (Hillier & Velde, 1992) may be an intermediate...Cretaceous and Tertiary reservoir rocks from offshore Norway, II. Formation water chemistry and kinetic considerations...a 7 Angstrom mineral: an example from offshore Norway and possible implications for the interpretation...Sea North Sea North Sea Brent Group Brent Group Lunde Formation Jurassic Jurassic Triassic North Sea |  | | Book | | Triassic red-bed sandstone of the Lunde Formation, offshore Norway (S. Morad, unpublished data) occurs...kaolinite in reservoir sandstones from offshore Norway (Hillier & Velde, 1992) may be an intermediate...Cretaceous and Tertiary reservoir rocks from offshore Norway, II. Formation water chemistry and kinetic considerations...a 7 Angstrom mineral: an example from offshore Norway and possible implications for the interpretation...Sea North Sea North Sea Brent Group Brent Group Lunde Formation Jurassic Jurassic Triassic North Sea |  | | Journal (issue) | | iddingsite and magnetite. Orthopyroxene rims are common, and partial to total replacement by magnetite occurs...are anhedral to subhedral and somewhat embayed. Magnetite inclusions and orthopyroxene rims are scarce,...typically cracked and embayed. Iddingsite and magnetite are common and were observed as reaction rims...ranging from 0.1 to I mm long, with inclusions of magnetite less than 0.1 mm in size. Olivine is anhedral...thesis, 175 p. Birchfield, G.E., Weertman, 1., and Lunde, A.T., 1981, Paleoclimate model of northern Hemisphere |  | Zhou, Yuefei, Gao, Yang, Xie, Qiaoqin, Wang, Jin, Yue, Zhengbo, Wei, Lin, Yang, Yang, Li, Ling, Chen, Tianhu (2019) Reduction and transformation of nanomagnetite and nanomaghemite by a sulfate-reducing bacterium. Geochimica et Cosmochimica Acta, 256. 66-81 doi:10.1016/j.gca.2019.02.040 | Journal (article/letter/editorial) | | February 2019; available online xxxx Abstract Magnetite and maghemite are important components of iron...sulfate to acid volatile sulfur conversion in magnetite and maghemite, respectively. Transmission electron...polysulfides are the main secondary sulfides in the magnetite experiment, while the maghemite experiment also...reduction of Fe(III) to Fe(II) on the surface of magnetite and maghemite both by dissolved sulfides and SRB...structural similarity between magnetite and maghemite, and the conductivity of magnetite, constrain the unique |  | | Journal (article/letter/editorial) | | Conn. Mica schist, Watertown, Conn. Schist w. magnetite, Stockbridge, Vt. Actinolite-talc schist, Stockbridge...Phlogopite schist, Montville, N.Y. Talc schist w. magnetite, Marquette Co., Mich. Biotite schist, Moose Lake...-hornblende biot ite schist, amphibolite facies, Oppdal, Norway Biotit>e, coexisting with YFM 18 Garnet, garnet...-hornblende schist’ amphibolite faciex, Oppdal, Norway Hornblende, coexisting \vith \‘FM 22 Sphene, pegmatitc...Hematite, Ioditz, Germany Magnetite, Sanford ore, Moriah, Essex Co., N.Y. Magnetite, Magnet Cove, Ark. Limonite |  | | Journal (article/letter/editorial) | | Accepted Manuscript The Bamble Sector, south Norway: A review Timo G. Nijland , Daniel E. Harlov , Tom...Harlov, D.E., Andersen, T., The Bamble Sector, south Norway: A review, Geoscience Frontiers (2014), doi: 10... ACCEPTED MANUSCRIPT The Bamble Sector, south Norway: A review Timo G. Nijland a,*, Daniel E. Harlov...University of Oslo, PO Box 1047, Blindern, 0316 Oslo, Norway * SC Corresponding author. M AN U E-mail:...Abstract The Proterozoic Bamble Sector, South Norway, is one of the world's classic amphibolite- to |  | | Report (issue) | | ... (.078) Qu~trtz-porphyry ..... Kro!tkollen, Norway ................. Aplite ................ Butte......... (7ti. 6) Aplitic granophyre ... Hennum, Norway .................... .Mnscovite-gmnite .... Omeo...168, 172.-W. T. Apliticgranophyre ... Konerudwege,Norway ............... Z. K., XVI, 77.-W. '1'. Rhyolite................. Bull. 168, 150.-W. T. Gislernd, Norway .................... Z. K., XVI, 46.-W. T . Albany................. Grnrudite ............ W. Aker, Norway ..................... Quartz-pantellerite .. 1 |  | | Journal (article/letter/editorial) | | thermodynamically unstable with respect to iron and magnetite, Fe3O4, below the melting point of bulk wustite...Department of Geosciences, University of Oslo, Norway Seven distinct phases of Variscan two-mica granite...98–109. [4] Kvamme, Kuznetsova, Hebach, Oberhof & Lunde (2007) Computational Materials Science 38, 506–513...metallic polarization. In these abiotic experiments magnetite was used as a proxy biomineral and dispersed within...active ion concentration, in the presence of magnetite, alone are unlikely to explain recent SIP monitoring |  | | Journal (article/letter/editorial) | | p. 308. L. ft. S P E N C E R T. Barth and G. Lunde, 1926. Zeits. Physik. Chem., ]~rror for Iodargyrite...(Magnetoihnenit). Ilexagonal mixed crystals of ilmenite with magnetite, the name titanomagnetite being reserved for cubic |  | | Journal (issue) | | Boehmite from syenite pegmatites in the Oslo region, Norway .................................................Morphology and twinning of sellaite from Gjerdingen, Norway .................................................the featured crystals. For example, on a Swiss magnetite, one might find that all the crystals look alike...rhythmically layered rocks rich in pyroxenes, magnetite, nepheline, micas and, later, calcite (carbonatite...x 15 x 2 mm — associated with mafic complex. Magnetite Fe30 4 Octahedra to 2 mm — major constituent of |
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