 | | Journal (article/letter/editorial) | | University of Washington, Seattle, WA 98195-1310, USA; bwevans@uw.edu (B.W.E.); kuehner@uw.edu (S.M.K.)...previously observed. In samples from the Duluth Complex (Minnesota, USA) containing igneous olivine Fa36–44...ferroan–olivine-bearing samples from the Laramie Complex (Wyoming, USA) show a compositional variability of secondary...spacing. This substitution occurs in bastite lizardite (altered chain silicate) in some ocean-floor serpentinites...Number of Spots Duluth Complex DM561A Bardon Peak Mg–His Mg–His 9 20 Laramie Complex LAC-1B Oxide Body |  | | Journal (article/letter/editorial) | | troctolitic rocks of the Bathtub intrusion, Duluth Complex, U.S.A Sara Raič, Kurt Krenn, Aberra Mogessie...troctolitic rocks of the Bathtub intrusion, Duluth Complex, U.S.A, Precambrian Research (2019), doi: https://...troctolitic rocks of the Bathtub intrusion, Duluth Complex, U.S.A. Sara Raiča, Kurt Krennb & Aberra Mogessiec...deposit in the troctolitic Bathtub intrusion (Duluth Complex) contains abundant CH4-rich fluid inclusions...active rifting environment in which magma of the Duluth Complex (1.1 Ga) has intruded as repeated pulses, fluid |  | | Journal (article/letter/editorial) | | in the southern Appalachians Piedmont in Georgia, USA. Oxygen isotope compositions obtained by laser-fluorination...other bodies, the River Road and the Nancy Hart complex, show average plagioclase δ18O values of 7.2‰ and...Similarly, the River Road body and the Nancy Hart complex yield much lower oxygen isotope thermometry temperatures...al. 2008), the Stillwater Complex (e.g., Dunn 1986), the Bushveld Complex (e.g., Schiffries & Rye 1989)...intrusion (e.g., Chalokwu et al. 1993), the Duluth complex (Lee & Ripley 1996), the Great Dyke (Chaumba |  | | Journal (article/letter/editorial) | | (MgzCa content y25%) serpentine group, commonly lizardite, chemical formula Mg3Si2O5(OH)4 (Mg content y25%)...Africa; Great Dyke, Zimbabwe; Duluth, Canada; Stillwater, Montana, USA Central Lapland Greenstone Belt...Belt, Australia Urals, Russia; Duke Island, Alaska, USA and Turnagain, British Columbia, Canada Bide et...areal extent of the Skaergaard layered igneous complex, which is 100 km2 (McBirney, 1996). For the BGS...ultramafic rocks (Wilson, 1996) to the Bushveld Complex, one of the largest layered igneous intrusions |  | | Journal (article/letter/editorial) | | Louis, MO 63130, USA Abstract. The Acoje massif is part of a mafic-ultramafic complex, the Zambales ophiolite...National Laboratory, CMT-205, Argonne, IL 60439 USA Offprint requests to: T.A. Abrajano Introduction...the northernmost block of the Zambales ophiolite complex, a collage of Mesozoic ophiolitic slabs in western...non-pseudomorphic forms) described below, are either lizardite (1T) or clino-chrysotile. However, the Raman spectra...ternary composition, most of the chrysotile and lizardite phases analyzed in this study fall into the SiO2-poor |  | | Journal (article/letter/editorial) | | 5500 University Parkway, San Bernardino, CA 92407, USA Department of Earth Sciences, University of California...Riverside, 900 University Avenue, Riverside, CA 92521, USA c Mineral Resources Tasmania, PO Box 56, Rosny Park...University of Hawai‘i at Manoa, Honolulu, HI 96822, USA Received 16 March 2016; accepted in revised form...5500 University Parkway, San Bernardino, CA 92407, USA. E-mail address: emelch@csusb.edu (E.B. Melchiorre)...ultramafic rocks known as the Dundas ultramafic complex (Brown, 1986; Burrett and Martin, 1989). This unit |  | | Journal (article/letter/editorial) | | temperature origin (25–185 °C) of some chrisotile and lizardite minerals (Wenner and Taylor, 1974). More recently...of the early mineralogy produced serpentine (lizardite and minor chrysotile), chlorite, and talc and...Arenaceous formations include (i) the Casanova Complex, composed of quartz-feldspathic rocks with metamorphic...ultramafites of the Taro–Ceno Valleys are serpentine (lizardite and rare chrysotile), smectite minerals (Fe– Mg...only on chrysotile, which is less abundant than lizardite in the serpentinites of the areas that we studied |  | | Journal (article/letter/editorial) | | Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...of the economically important Mashava Igneous Complex (MIC) in Zimbabwe was conducted using petrographic...into its origin. The MIC, an ultramafic-mafic complex located in the western extremity of the Masvingo |  | | Journal (article/letter/editorial) | | F.C.: The crystal structure of curetonite, a complex heteropolyhedralsheet mineral, 545 Cooper, M.,... Hawthorne, F.C.: The crystal structure of a complex heteropolykombatite, Pb14(VO4)2OeCa, hedral sheet...250 Mellini, M., Viti, C.: Crystal structure of lizardite-1T from Elba, Italy, 1194 Memmi, I. see Connolly... TFez(OH)lCl, a new mineral from the Duluth Complex, Minnesota, with implications for the oxidation of |  | Luhmann, Andrew J., Tutolo, Benjamin M., Bagley, Brian C., Mildner, David F.R., Scheuermann, Peter P., Feinberg, Joshua M., Ignatyev, Konstantin, Seyfried, William E. (2017) Chemical and physical changes during seawater flow through intact dunite cores: An experimental study at 150–200 °C. Geochimica et Cosmochimica Acta, 214. 86-114 doi:10.1016/j.gca.2017.07.020 | Journal (article/letter/editorial) | | Socorro, NM 87801, USA. 2 Department of Earth Sciences, University of Minnesota, 310 Pillsbury Drive...Drive SE, Minneapolis, MN 55455, USA 3 Department of Earth Sciences, University of Oxford, South Parks...Gaithersburg, MD 20899, USA 5 Institute for Rock Magnetism, University of Minnesota, 100 Union Street SE...SE, Minneapolis, MN 55455, USA 6 Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, UK. *Corresponding...Technology, 801 Leroy Place, Socorro, NM 87801, USA. Tel: 1-575-835-5029; fax: 1-575-835-6436. Email |  | | Corporate Document | | GEOLOGY OF THE EAGLE NICKEL-COPPER DEPOSIT MICHIGAN, USA Prepared for: Kennecott Minerals Co. Prepared by:...project is located in Marquette County, Michigan, USA. The project is 100% owned and operated by Kennecott...property is located in the Upper Peninsula of Michigan, USA at geographic coordinates 46° 44’ 54” north latitude...Northern and Southern Complexes. The younger Northern Complex, comprised mainly of gneiss, granitoids and lower...from the Northern Complex, are comparable to other dates from the Canadian and Minnesota portions of the |  | | Journal (article/letter/editorial) | | serpentine mineral present is antigorite, but lizardite and chrysotile may be present as well in small...mineralogical and stable isotope data suggest a complex history of hydrothermal alteration of the Jinchuan...when compared to those in other deposits such as Duluth (Ripley and Alawi, 1986), Voisey’s Bay (Naldrett...Wicks, F.J., 1995, Conditions of formation of lizardite, chrysotile, and antigorite, Cassior, British...evolution of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota: Canadian Mineralogist, v. 24, p. 347–368 |  | | Journal (article/letter/editorial) | | Geology, Grand Valley State University, Allendale, MI, USA (waddelll@gvsu.edu) 2 Department of Geological Sciences...Sciences, University of Michigan, Ann Arbor, MI, USA (ihendy@umich.edu, tedmoore@umich.edu) 3 Department...Oceanography, Texas A& M University, College Station, TX, USA (mlyle@ocean.tamu.edu) We present new benthic stable... University of Maryland, College Park, MD 20742 USA (rjwalker@geol.umd.edu) The highly siderophile elements...of the main hypotheses has flaws, and that more complex, hybrid models may ultimately be necessary to account |  | | Journal (article/letter/editorial) | | graphite within phlogopite from Finero ultramafic complex (Italian Western Alps): implications for mantle...flakes from the Finero body, an Alpine lherzolitic complex. The presence of nano-lamellae of graphite associated...nature and the evolution of the Finero ultramafic complex. Occurrence and petrography The phlogopite samples...samples were collected in the Finero ultramafic complex, which occurs near the western margin of the Ivrea...Western Alps (Exley et al., 1982). The pre-Mesozoic complex (Ernst, 1981), which is thought to represent a |  | | Journal (article/letter/editorial) | | arc type metavolcanics Central Finland Granitoid Complex Rapakivi granites O ProductiveNi-Cu Mine ~)...occurrences and unmineralised intrusions The Vammala Complex hosted the largest Ni-Cu deposit within the Vammala...prospect--the major subject of this study. The Vammala Complex consists of at least two superimposed ultramafic... The most productive orebodies of the Vammala Complex were the "Deep ore" and the Sotka orebody. The...between 10 P. Peltonen unaltered pyrrhotite and lizardite. Evidently, the Cu-rich alteration rim was deposited |  | Melcher, F., Grum, W., Simon, G., Thalhammer, T. V., Stumpfl, E. F. (1997) Petrogenesis of the Ophiolitic Giant Chromite Deposits of Kempirsai, Kazakhstan: a Study of Solid and Fluid Inclusions in Chromite. Journal of Petrology, 38 (10) 1419-1458 doi:10.1093/petroj/38.10.1419 | Journal (article/letter/editorial) | | saline, sodium-dominated aqueous solutions with complex gas contents. Variable amounts of water, hydrogen...Sciences, University of Michigan, Ann Arbor, MI 48109, USA. hydrocarbons, carbon dioxide and nitrogen have...northern and western part of the Kempirsai massif, complex silicate–oxide assemblages formed in small orebodies...et al., 1984). Uralian ophiolites underwent a complex evolution in the Uralian palaeo-ocean. An early...of these is the north–south trending Maksyutov Complex, situated ~50 km north of Kempirsai (Lennykh et |  | | Journal (article/letter/editorial) | | grain boundaries are filled with mesh-textured lizardite (Lorand, 1989a). Peridotites from the smallest...composition of peridotite tectonites from the Ivrea Complex, northern Italy: residues from melt extraction...mineralization in the Babbitt deposit, Duluth Complex, Minnesota. Econ. Geol. 85, 830–841. Rose-Weston...Cu–Ni–PGE sulfides of the Dunka Road deposit, Duluth Complex, Minnesota; the importance of combined assimilation...Association of Canada, St John's, Newfoundland, USA, pp. 239–243. Vielzeuf, D., Kornprobst, J., 1984 |  | | Journal (article/letter/editorial) | | magnetiteq-Ni-rich awaruite is zardite in neutral media,lizardite which reerystallizes formedin the sulfur-freesystem... the Cu-Fe-Ni sulfide mineralizationin the Duluth Complex,northeasternMinnesota: CanadianMineralogist |  | | Journal (article/letter/editorial) | | Rocks of the Gunflint Iron-Formation, Ontario-Minnesota PAP?k^N I Department of Earth and Space Sciences...iron range that is largely confined to northern Minnesota. The Gunflint Iron-Formation of Ontario contains...International Boundary at Gunflint Lake (Fig. 1). In Minnesota the iron range forms a narrow belt 20 km long...long and is truncated to the southwest by the Duluth Complex. Erosional remnants northeast of Thunder Bay...of the Cuyuna, Mesabi, and Gunflint Ranges of Minnesota and Ontario. The iron formation is structurally |  | Taranovic, V., Lesher, C. M., Houle, M. G., Bedard, J. H. (2012) Physical Volcanology and Genesis of Komatiite-Associated Ni-Cu-(PGE) Mineralization in the C Zone, Bannockburn Township, Ontario. Economic Geology, 107 (5) 835-857 doi:10.2113/econgeo.107.5.835 | Journal (article/letter/editorial) | | Ontario 4 Watabeag Batholith 10 Timmins Canada USA KIDD CREEK METALLURGICAL SITE (Ni CIRCUIT) N KIDD...quartz-talc-carbonate veins (e.g., Fig. 6F) also record a complex deformation history for the massive ores in some...than cumulate units. Many units are veined with lizardite or antigorite with minor chrysotile and/or are... and typically contain thin (0.5 cm or less) lizardite veins, with disseminations of fine (0.5−1 mm)...disseminated mineralization in the Katinniq ultramafic complex, Raglan district, Cape Smith Belt, New Québec: |  | | Journal (issue) | | Alonso-Perez Harvard University, Cambridge, Massachusetts, USA Alan D. Hart Gem-A, London Karl Schmetzer Petershausen...Edward Boehm RareSource, Chattanooga, Tennessee, USA Brian Jackson National Museums Scotland, Edinburgh...Mary Johnson Consulting, San Diego, California, USA Alan T. Collins King’s College London Stefanos...Emmett Crystal Chemistry, Brush Prairie, Washington, USA Emmanuel Fritsch University of Nantes, France Rui...Washington DC, USA George R. Rossman California Institute of Technology, Pasadena, USA Andy H. Shen China |  | Tamblyn, R., Zack, T., Schmitt, A.K., Hand, M., Kelsey, D., Morrissey, L., Pabst, S., Savov, I.P. (2019) Blueschist from the Mariana forearc records long-lived residence of material in the subduction channel. Earth and Planetary Science Letters, 519. 171-181 doi:10.1016/j.epsl.2019.05.013 | Journal (article/letter/editorial) | | slightly faster rate (Gvirtzman and Stern, 2004). Complex geometries involving slab tearing and steepening...Chamorro Seamount with those of the Franciscan Complex have been used to infer conditions of 250–300 ◦...temperatures of ∼200–300 ◦ C estimated from chrysolite, lizardite and brucite-bearing serpentinized peridotites...and serpentinite mélanges such as the Franciscan Complex and Carribean (cf. Becker and Cloos, 1985; Lázaro...systems such as the Caribbean and the Franciscan Complex (Krebs et al., 2008; Lázaro et al., 2009; Blanco-Quintero |  | | Journal (article/letter/editorial) | | subordinatechrysotileand lizardite),talc, magnesite,and phlogopite.The lizardite was formed at a relatively... 1978, Partitioningof Fe, Co, Ni, trusion, Duluth Complex, Minnesota:ECON. GEOL., v. 72, p. and Cu betweensulfideliquid |  | | Journal (article/letter/editorial) | | (1 997) 8 Meteoritical Society, 1997. Printed in USA. Mineralogy of meteorite groups ALANE. RUBIN Institute...California, Los Angeles, Californi.190095-1567, USA Author's e-mail address: rubin@cosmic.igpp.ucla.edu...contain major amounts of hydrous phyllosilicates, complex organic compounds, magnetite, various sulfates...chrysotile cronstedtite ferroan antigorite greenalite lizardite smectite group montmorillonite Mg3Si205(0H)4...Cr, Fe, Ni and Co occur inside petrographically complex metal-, sulfide-, phosphate-, silicate- and V-magnetite-bearing |  | Strohmeier, Brian R., Huntington, J. Craig, Bunker, Kristin L., Sanchez, Matthew S., Allison, Kimberly, Lee, Richard J. (2010) What is asbestos and why is it important? Challenges of defining and characterizing asbestos. International Geology Review, 52 (7) 801-872 doi:10.1080/00206811003679836 | Journal (article/letter/editorial) | | al. Review RJ Lee Group, Inc., Monroeville, PA, USA (Accepted 18 January 2010) Asbestos is a term used...The amphibole mineral group is characterized by complex elemental substitution within the crystal lattice...naturally in weathered volcanic ash within the western USA, including Arizona, Nevada, Oregon, California, and...were first conducted in the UK and later in the USA (Ayer et al. 1965). As studies on asbestos-induced...standard method using PLM for asbestos analyses in the USA is the EPA 600 Test Method (Perkins and Harvey 1993) |
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