| | Journal (article/letter/editorial) | Microstructural Evolution of Amphibole Peridotites in Åheim, Norway, and the Implications for Seismic Anisotropy...Geoscience, University of Oslo, Blindern, N-0316 Oslo, Norway; h.o.austrheim@geo.uio.no Correspondence: hjung@snu...microstructure of amphibole peridotites from Åheim, Norway were analyzed to understand the evolution of...seismic anisotropy of the subduction zone. The Åheim peridotites had a porphyroclastic texture and some...tremolite. Detailed microstructural analysis on the Åheim peridotites revealed multiple stages of deformation | | | Journal (article/letter/editorial) | University of Bergen, Allegaten 41, N-5007 Bergen, Norway MA NU ABSTRACT Hydrogen, methane and ammonium...presence of catalytic minerals SC R such as chromite and magnetite. Methane was also detected and...FFT reaction in the presence of magnetite and chromite catalysts. Based on a strong correlation between...between H2 and spinel-phases such as magnetite and chromite, Mayhew et al. PT (2013) inferred that H2 formation...serpentinized dunite in the Leka ophiolite complex, mid-Norway, we detected H2, CH4 and Nspecies in the percolating | | | Journal (volume) | mineralsymposium 2019 Redigert av Alf Olav Larsen og Torfinn Kjærnet Stathelle 2019 Norsk mineralsymposium...mineralsymposium 2019 Redaksjon: Alf Olav Larsen og Torfinn Kjærnet ISBN: ISBN 978-82-690027-4-4 Trykk: ...Syret ut av kalsitt. Stuffen er 7 cm bred. Samling og foto: Torfinn Kjærnet. 2 Forord Det er med glede...alle bidragsytere og deltagere for at symposiet blir et vellykket arrangement, og håper at det kan videreføres...det være naturlig etter hvert å justere både form og innhold. Symposiet i år ble arrangert av Peter Andresen | | | Journal (article/letter/editorial) | collected from an active peridotite quarry in Åheim, Norway. These crystals are representative of a dunitic...In addition, it contains enstatite, diopside, chromite and various degrees of serpentine. As a consequence...sample collected from the active quarry in Åheim, Norway used for kinetic experiments in this study....olivine sample used in this study collected near Åheim, Norway as indicated in the text. En = enstatite; Ol...garnet peridotites in the Western Gneiss Region of Norway. Contrib. Mineral. Petrol. 87, 72–86. Moore, A | | | Journal (article/letter/editorial) | natural peridotite from the Almklovdalen complex, Norway, were carried out in a Griggs-type apparatus at...(Fig. 2a–b) from the Almklovdalen complex (Western Norway) comprises ca. 90% olivine (Mg1.8Fe0.2SiO4), b10%...b10% orthopyroxene (Mg1.8Fe0.2Si2O6), b1% chromite (Fe0.8Mg0.2Cr1.7Al0.3O4), chromium chlorite, and rarely...containing N95% olivine, commonly referred to as Åheim dunite, have previously been used in a variety of...1992. Seismic wave dispersion and attenuation in Åheim dunite: an experimental study. Geophys. J. Int. | | | Journal (article/letter/editorial) | University of Oslo, Sem Selands vei 24, 0316 Oslo, Norway 3 Mineralogie–Department Geowissenschaften, Universität...interaction with olivine can be observed at Ballangen, Norway, where the high olivine content around a mined...batch experiments. In addition, a dunite from Åheim, Norway, was also used to examine the reaction of the...sulfide, clinochlore [(Mg,Al)6(AlSi)4O10(OH)8], and chromite (FeCr2O4). As reactive solutions, sulfuric acid...waters from the disused nickel mine in Ballanger, Norway (Banks et al. 1997). Nickel is also classed as | | Defnet, Peter A., Wise, Michael A., Harmon, Russell S., Hark, Richard R., Hilferding, Keith (2021) Analysis of Garnet by Laser-Induced Breakdown Spectroscopy—Two Practical Applications. Minerals, 11 (7) 705 doi:10.3390/min11070705 | Journal (article/letter/editorial) | whereas uvarovite is generally associated with chromite pods (e.g., Saranovskii Mine, Russia). Samples...(Si, Al), manganite (Mn), apatite (Ca, P), and chromite (Cr). A conventional ZAF routine was used for...Northern Cape Province, South Africa Rauhammaren, Åheim, Norway Dora Maira Massif, Western Alps, Italy Trziblitz | | | Book | . . . . . . . . . . . . . . . . 3.2 Podiform Chromite Deposits in Ophiolites . . . . . . . . . . . ...TU Berlin) Sphalerite (zincblende) Fig. 1.9 Chromite (cockade ore) from a podiform chromium deposit...Fe2+(Fe3+)2O4. Magnetic. 1.2.2 Oxides and Hydroxides Chromite FeCr2O4 (Fig. 1.9). Crystal system Cubic Color...Ilmenite from Løvjomås, Froland, near Arendal (Norway) (photo © F. Neukirchen/Mineralogical Collections...are used as color pigments and tanning agents. Chromite with a low chromium content is used in refractory | | | Book | MgO, uraninite (7 Sect. 7.4), spinel, magnetite, chromite (7 Sect. 7.2), and the garnet group (7 Sect. 11...nephelinesyenite pegmatite, Saga Quarry, Tvedalen near Larvik, Norway 2 65 vol.%, whereas the dark-coloured silicate...layers of calcite marble, Mo i Rana, Nordland, Norway Sedimentary Processes (7 Chaps. 24 and 25) The...crystallise from phosphor-rich oxide melts. Moreover, chromite, ilmenite, titanian magnetite or platinum-group...typical ringlet-shaped growth form. Kongsberg, Norway. Width of view is c. 6 cm rich in native Ag, the | | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | . . . . . . . . . . . . . . . . . . . . . . . Chromite . . . . . . . . . . . . . . . . . . . . . . ....Bentonite, Kaolin Ophiolite: Ultrabasic Rocks Chromite, Dunite, Serpentinite, Magnesite Ophiolite: Pillow...Mixed-application physical a nd chemical m inerals—olivine, chromite, fluorspar, gypsum, and limestone The matrix was...yrochlore, and pyrolusite; stishovite, spinel, and chromite • Hydroxides such as brucite, gibbsite, go ethite...is no—or virtually no—commercial production of chromite, diamonds, and mang anese in the United States | | | Book | 150 in Mio t/a Brick clay 850 Potassium salt Chromite Magnesite 34 28 19 Copper 18 Kaolin 40 Sulfur...Occurrence of pegmatite quartz in Evje-Iveland, Norway (a) and hydrothermal gangue quartz in the Bavarian...feldspar in the pegmatite deposit Li (Evje-Iveland, Norway) 3.6 Mica Minerals 55 sought-after raw materials...tons of world production occurs in the Åheim district in Norway, which has almost unlimited resources...Alumosilicate Magnesiaspinel Magnesiachromite Chromite Picrochromite Spinel Alumina-rich Aluminacarbon | | | Journal (article/letter/editorial) | ~15 vol %). Minor phases detected are troilite, chromite, and calcium-magnesium phosphates. New, Unique...spallogenic Ne was most probably produced from chromite, a major target mineral in the Saratov residue...perhaps due to partitioning of Cr into nearby chromite. As the trace approaches the right edge of the...structure. One CO sulfide inclusion is associated with chromite. Intermediate Shock. The only sample is 4704....FOR OXYGENISOTOPE MEASUREMENTS OF MAGNETITE AND CHROMITE . C. E. Caplan1,2, G. R. Huss2, J. E. Hammer1 | | | Book | FeCr2O4 Hollandite CaTi2O4 3.8 5.63 Albite Chromite Un-named FeCr2O4 phase Un-named FeTiO3 phase...phase Tuited FeCr2O4 CaFe2O4 5.62 Chromite FeTiO3 Li-niobate UnIlmenite known Unknown Ca3(PO4)2 ...hollandite structure; two post-spinel polymorphs of chromite; and tuite, a high-pressure polymorph of merrilite...high-pressure FeCr2O4 polymorphs. a A shocked chromite grain (Ch) that has been partly converted to high-pressure...terrestrial impactites. Two post-spinel polymorphs of chromite (FeCr2O4) have been found in the Suizhou meteorite | | | Book | in den Südalpen (Ivreazone), in Mittelnorwegen (Åheim), Zypern (Troodos-Masiv), Oman, Neuseeland; als...mittelozeanischer Rücken (Bottinga u. Allègre 1978), OG: ozeanischer Geotherm, KG: kontinentaler Geotherm... Dicke Linie: Solidus von Pyrolit mit 0,1 % H2O; OG: ozeanischer Geotherm; dünn-punktiert: Linien gleichen...Kryachko VV, Yudovskaya MA (2008) Ore petrology of chromite-PGE mineralization in the Kempirsai ophiolite...Rev 40:122–131 Yudovskaya MA, Kinnaird JA (2010) Chromite in the Platreef (Bushveld Complex, South Africa): | | | Book | in den Südalpen (Ivreazone), in Mittelnorwegen (Åheim), Zypern (Troodos-Masiv), Oman, Neuseeland; als...mittelozeanischer Rücken (Bottinga u. Allègre 1978), OG: ozeanischer Geotherm, KG: kontinentaler Geotherm... Dicke Linie: Solidus von Pyrolit mit 0,1 % H2O; OG: ozeanischer Geotherm; dünn-punktiert: Linien gleichen...Kryachko VV, Yudovskaya MA (2008) Ore petrology of chromite-PGE mineralization in the Kempirsai ophiolite...Carbonatite-related contact metasomatism in the Fen complex, Norway: Effects and petrogenetic implications. Mineral |
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