 | | Journal (article/letter/editorial) | | agpaitic nepheline syenites in the Ilímaussaq intrusion, South Greenland☆ Johannes Schönenberger, Michael...26 May 2006 Abstract Within the 1.16 Ga old Ilímaussaq intrusion, up to 700 m large autoliths occur...primary mafic phases of the augite syenites (augite, fayalite, Fe–Ti oxides) are completely replaced by arfvedsonite...Elsevier B.V. All rights reserved. Keywords: Ilímaussaq; Isocon-method; Fluid–rock interaction; Element-mobility;...Bowden, ☆ Contribution to the mineralogy of Ilímaussaq No. 128. ⁎ Corresponding author. Tel.: +49 7071 |  | Schilling, J., Frost, B. R., Marks, M. A. W., Wenzel, T., Markl, G. (2011) Fe-Ti oxide-silicate (QUIlF-type) equilibria in feldspathoid-bearing systems. American Mineralogist, 96 (1) 100-110 doi:10.2138/am.2011.3596 | Journal (article/letter/editorial) | | Ilmenite Fayalite The AUNIlF reference curve (with unit activities for albite, nepheline, and fayalite) is...more than 5 log units below FMQ (where FMQ is the fayalite-magnetite-quartz buffer), which explains the rarity...conclude that AUNIlF assemblages involving pure fayalite do not stably occur in terrestrial magmatic systems...controlled by the ratio of silica activity to fayalite activity (aSiO2/ aFa). At values higher than ~0...than their sodic counterparts. As a result of low fayalite component in olivine, the aSiO2/aFa ratio becomes |  | | Journal (volume) | | E T I N 1 9 0 · 2001 The Ilímaussaq alkaline complex, South Greenland: status of mineralogical research...Sørensen Contributions to the mineralogy of Ilímaussaq, no. 100 Anniversary volume with list of minerals...SURVEY OF DENMARK AND GREENLAND MINISTRY OF THE ENVIRONMENT 1 Geology of Greenland Survey Bulletin 190...Gardar province, geochemistry, hyper-agpaite, Ilímaussaq, mineralogy, nepheline syenite, peralkaline,...South Greenland. Cover Igneous layering in kakortokites in the southern part of the Ilímaussaq alkaline |  | | Journal (article/letter/editorial) | | the authors is from syenite in the Kûgnat complex, Greenland (Upton, 1960). The presence of siderite as...alkaline nepheline syenites in the Gardar Rift, Greenland (Jones and Peckett, 1980), and is approximately...alkaline lavas from the Warrumbungle volcanic complex, New South Wales (Duggan, 1988). Zirconium may...trends from Ilímaussaq (Larsen, 1976) and S. Qoroq (Stephenson, 1972), Gardar Rift, Greenland; monzonite...53 Under an oxygen fugacity as low as QFM-4, fayalite-rich olivine would be expected to form even in |  | | Journal (article/letter/editorial) | | a t e / l i t h o s Apatite in the Ilímaussaq alkaline complex: Occurrence, zonation and compositional...online 22 June 2008 Keywords: Apatite REE Na Ilímaussaq Agpaitic A B S T R A C T Apatite from the augite...sodalite foyaite and naujaite) of the Ilímaussaq alkaline complex has been analysed by electron microprobe...complexes. ☆ Contribution to the mineralogy of Ilímaussaq no. 139. E-mail address: Jornr@geo.ku.dk. 0024-4937/$...assemblages has been reported from the Ilímaussaq alkaline complex where Rønsbo (1989) documented that the |  | Graser, G., Potter, J., Köhler, J., Markl, G. (2008) Isotope, major, minor and trace element geochemistry of late-magmatic fluids in the peralkaline Ilímaussaq intrusion, South Greenland. Lithos, 106 (3) 207-221 doi:10.1016/j.lithos.2008.07.007 | Journal (article/letter/editorial) | | late-magmatic fluids in the peralkaline Ilímaussaq intrusion, South Greenland☆ G. Graser a,⁎, J. Potter b, J....online 22 July 2008 Keywords: Fluid inclusions Ilímaussaq Stable isotopes Hydrochemistry Peralkaline a...a b s t r a c t The persodic, 1.16 Ga old Ilímaussaq intrusion consists of alkali granites, syenites...fluids in equilibrium with late-stage melts at Ilímaussaq at ≤450 °C. The carbon- and hydrogen-isotope...rocks, at least in the Gardar Province of South Greenland, it is suggested that this ratio is typical of |  | | Journal (article/letter/editorial) | | that appear at the end stage of the Zomba–Malosa complex are arguably the most spectacular example of the...of 133 the Chilwa Island complex. The coeval silicate rocks of that complex indicate an interaction with...the Mesoproterozoic Gardar Province in southern Greenland. The area contains clear evidence of repeated...anorthositic–mangerite–charnockite–(ferroan) granite complex (AMCG; see below). There is a parallel with the...(Blaxland et al., 1978). Finally, the well-known Ilímaussaq complex contains agpaitic silica-oversaturated units |  | | Journal (article/letter/editorial) | | come in various flavors, commonly in the same complex. Consider for example the Ririwai, Tibchi and Kwandonkaya...ring-shaped units that contain virtually end-member fayalite + hedenbergite (metaluminous granite; e.g., Ike... Fe-enriched and Mg-depleted, and locally are fayalite-bearing. Based on the major elements, they might...case of the Yellowstone Plateau, the Naivasha complex is bimodal. The basaltic magma assimilated variable... 2004). Along the latter belt, the Cape Cross complex is made up of A-type granite, nepheline syenite |  | | Journal (article/letter/editorial) | | intrusive phase of the Blatchford Lake Igneous Complex, Canada, and host hydrothermally altered eudialyte-rich...Igneous Complex (Grace Lake Granite, Thor Lake Syenite, Rim Syenite), δ18Omelt calculated for fayalite, riebeckite...layered intrusion that consists of agpaitic (i.e., complex zirconosilicate-bearing) sodalite-nepheline syenites...Lake Igneous Complex, which intruded the Slave Craton (Fig. 1). This anorogenic complex consists of successive...Fig. 1. Geology of the Blatchford Lake Igneous Complex, based on maps of Johnson and Senkiw (1977), Davidson |  | Bailey, J., Sorensen, H., Andersen, T., Kogarko, L., Rosehansen, J. (2006) On the origin of microrhythmic layering in arfvedsonite lujavrite from the Ilímaussaq alkaline complex, South Greenland. Lithos, 91 (1) 301-318 doi:10.1016/j.lithos.2006.03.022 | Journal (article/letter/editorial) | | arfvedsonite lujavrite from the Ilímaussaq alkaline complex, South Greenland☆ John C. Bailey a,⁎, Henning...arfvedsonite lujavrite from the Ilímaussaq alkaline complex, South Greenland. Three–15-cm-thick laminated...with the background arfvedsonite lujavrite of the complex, the dark layers are richer in sodalite, microcline...activities ☆ Contribution to the Mineralogy of Ilímaussaq no. 116. ⁎ Corresponding author. Tel.: +45 35322411;...mid-Proterozoic Gardar igneous province, South Greenland, provide many examples of layered igneous rocks |  | Chakrabarty, A., Mitchell, R. H., Ren, M., Saha, P. K., Pal, S., Pruseth, K. L., Sen, A. K. (2016) Magmatic, hydrothermal and subsolidus evolution of the agpaitic nepheline syenites of the Sushina Hill Complex, India: implications for the metamorphism of peralkaline syenites. Mineralogical Magazine, 80 (7) 1161-1193 doi:10.1180/minmag.2016.080.057 | Journal (article/letter/editorial) | | agpaitic nepheline syenites of the Sushina Hill Complex, India: implications for the metamorphism of peralkaline...ACT The Proterozoic Sushina Hill Complex is the only agpaitic complex, reported from India and is characterized...nepheline syenite. The complex is considered a ‘metamorphosed agpaitic complex’. This study describes...metamorphism. The Sushina complex is very similar in this respect to the Norra Kärr complex (Sweden). K E Y WO...group of peralkaline nepheline syenites containing complex Na-CaFe-Ti-Zr-REE silicates such as rinkite, eudialyte |  | | Journal (article/letter/editorial) | | reducing (fO2 was 2.0–3.6 log units above the quartz-fayalite-magnetite buffer) and that pH was moderately acidic...include agpaitic nepheline syenites (e.g., Ilímaussaq, Greenland; Lovozero and Khibiny, Russia) and granitic...peralkaline (molar [Na + K] / Al > 1) and contain complex zirconosilicates such as eudialyte and rinkite...(Le Maitre, 2002). Eudialyte-group minerals are complex Na-Ca-REE-Nb zirconosilicates; we use ©2017 by...syenites (kakortokites) of the Ilímaussaq intrusion, Greenland. Unlike the Ilímaussaq intrusion, however, the |  | | Journal (article/letter/editorial) | | nepheline syenite (white foyaite) from the Pilanesberg Complex, South Africa Tom Andersen, Marlina Elburg, Muriel...nepheline syenite (white foyaite) from the Pilanesberg Complex, South Africa, Chemical Geology (2016), doi: 10...nepheline syenite (white foyaite) from the Pilanesberg Complex, South Africa Muriel Erambert1 T Tom Andersen1...Abstract MA The Mesoproterozoic Pilanesberg Complex, South Africa, is built up by several distinct...outermost ring in the southwestern part of the complex (“Matooster type TE white foyaite”). In this |  | | Journal (article/letter/editorial) | | lujavrite in the Il|¨maussaq alkaline complex, South Greenland T. ANDERSEN1,* AND H. SéRENSEN2 1 2 ...from the IlõÂmaussaq complex, South Greenland, and is only known from this complex. The qualitative stability...water activity, oxygen fugacity, IlõÂmaussaq complex, Greenland. K EY WORDS : Introduction DESPITE its...one locality, the IlõÂmaussaq alkaline complex, South Greenland. It occurs as a rock-forming mineral that...as an extreme rarity in the Lovozero alkaline complex, Kola Peninsula, Russia, in a * E-mail: tom.andersen@geo |  | | Journal (article/letter/editorial) | | in the Apatite-Bearing Intrusion of the Khibina Complex I. D. Ryabchikova and L. N. Kogarkob a Institute...Under the redox conditions typical of the Khibina complex, the carbon speciation evolved as follows: ëé2...modified to apply to spinel and ilmenite of more complex compositions on the basis of the development of...of the nepheline syenites of the Lovozero and Ilímaussaq massifs [18] suggested that the redox conditions...of the Lovozero massif were close to the quartz–fayalite– magnetite (QFM) buffer. Data for spinels from |  | | Journal (article/letter/editorial) | | eudialyte in lujavrite from the Pilansberg alkaline complex, South Africa Roger H. Mitchell ⁎, Ruslan P. Liferovich...most evolved rocks of the Pilansberg alkaline complex are aegirine lujavrites in which three varieties...are recognizable. Type 1 involves replacement by complex aggregates of zircon, fergusonite-(Ce), allanite-(Ce)...“miaskitic” paragenesis. Type 2 alteration consists of complex aggregates dominated by deuteric Na–Zr-silicates...The Mesoproterozoic Pilansberg agpaitic alkaline complex is a large (∼ 25 × 24 km) partially unroofed ring |  | | Journal (article/letter/editorial) | | agpaitic dyke rock from the Gardar Province, South Greenland (contribution to the mineralogy of Il|¨ maussaq...similar to that of the neighbouring Ilõ´maussaq complex. Various mineral assemblages were used to reconstruct...as a small equivalent of the larger Ilõ´maussaq complex, in which identical differentiation processes proceeded...agpaitic, closed-system fractionation, Ilõ´maussaq, Greenland. Introduction BASED on their molar (Na+K)/Al...additionally characterized by the occurrence of complex Zr- and Ti-silicate minerals, such as eudialyte |  | | Journal (article/letter/editorial) | | redox conditions characteristic of the Khibiny Complex, CO2 is contained in fluid and carbonate anions...order to apply it to spinels and ilmenites of more complex composition on the basis of thermodynamic models...the Lovozero pluton were close to the quartz– fayalite–magnetite (QFM) buffer. The data on spinels in...the Gronnedal-Ika carbonatite–syenite complex in southern Greenland (Halama et al., 2005). Very high oxygen...augite syenite from the Ilímaussaq pluton of hyperalkaline rocks in southern Greenland (Markl et al., 2001; |  | | Journal (article/letter/editorial) | | redox buffers (e.g. nickel-nickel oxide and quartz-fayalite-magnetite, Frost, 1991) we calculate SO42−/H2S...magnetite-hematite (MH), nickelnickel oxide (NNO) and quartz-fayalite-magnetite (QFM), using the equations compiled...or within late-stage dykes radiating from the complex (Le Bas, 1977). These deposits host REE and HFSE...These parameters vary significantly from complex to complex and so our models compare two endmember redox...on alkaline magmatism in the Gardar Province (Greenland), and in particular the agpaitic nepheline syenites |  | | Journal (article/letter/editorial) | | matrices including biotite, hornblende, garnet, fayalite and forsterite (San Carlos Olivine), and an oceanic...with low Cr content, i.e. biotite, hornblende, fayalite and the Fe–Mn crust, reveal δ56/54Fe and δ57/54Fe...silicates. Olivine (fayalite and forsterite), hornblende, biotite, garnet and complex matrices such as Fe–Mn...olivine (fayalite and forsterite), biotite, hornblende, garnet and a Fe–Mn crust. Olivine with fayalite composition...MnO CaO Na2O K2O Total Olivinea SC Olivineb (Fayalite) (Forsterite) 30.72 – – – 3.64 64.75 1.10 0 |  | | Book | | findings for Sept Iles, Bushveld, Kiglapait, Ilímaussaq, and layered rocks in ophiolites are also presented...Jacqueline Vander Auwera 465 12 The Bushveld Complex, South Africa �������������������������������...Stearns A. Morse 589 14 The Ilímaussaq Alkaline Complex, South Greenland ��������������������������... D. Nielsen Geological Survey of Denmark and Greenland, Copenhagen, Denmark Brian O’Driscoll School of...demonstrate how the thermal history of the Bushveld Complex is documented by mineral ages from samples of the |  | | Journal (article/letter/editorial) | | elements, LREE), the pattern of order becomes more complex, and may involve up to six crystallographically...only at one other locality, the Khibina alkaline complex on the Kola Peninsula (Khomyakov 1995). At both...(Na), REE-doped glasses (La, Ce), barite (Ba), fayalite (Fe), orthoclase (K), diopside (Si), and synthetic...localities are presented in Tables 3–5. The Lovozero complex, central Kola Peninsula, Russia At Lovozero, apatite-group...Notable exceptions are apatite from the Ilímaussaq complex in Greenland (Rønsbo 1989), whose compositions follow |  | | Journal (article/letter/editorial) | | minerals such as eudialyte and rinkite, that is complex silicates of Zr, Ti, the rare earth elements (REE)...200 in the type locality, the Ilfmaussaq complex, South Greenland. These rocks have very long melting intervals...developed, hyperagpaitic lujavrites of the Ilfmaussaq complex have been formed from melts with extreme concentrations...syenite, phonolite, eudialyte, rinkite, Ilfmaussaq complex. Introduction SOME of the characteristic minerals...200 years. They were collected in the Ilfmaussaq complex by K.L. Giesecke in 1806 and were subsequently |  | | Journal (article/letter/editorial) | | IN PERALKALINE GRANITES FROM THE MORRO REDONDO COMPLEX, GRACIOSA PROVINCE, SOUTHERN BRAZIL: OCCURRENCE...evolved peralkaline granites from the Morro Redondo Complex, Graciosa Province (Southern Brazil). Nacareniobsite-(Ce)...analysis, peralkaline granites, Morro Redondo Complex, Graciosa Province, Brazil Introduction Nacareniobsite-(Ce)...(1989) in lujavrites from the Ilímaussaq alkaline complex, South Greenland (see also Pekov & Ekimenkova...evolved types that crop out in the Morro Redondo Complex are unique and particularly interesting from a |  | | Journal (article/letter/editorial) | | perovskite-group minerals from the Lovozero alkaline complex, Russia ANTON R. CHAKHMOURADIAN1)* and ROGER H...murmanite lujavrites at the Lovozero alkaline complex (Russia). These rocks contain euhedral crystals...rocks, Lovozero complex, Kola Peninsula, Russia. Introduction The Lovozero alkaline complex in the Kola...and remarkable degree of differentiation. The complex consists of several intrusive series emplaced in...amphibole-albite) rocks are very common at the margins of the complex, where they develop at the expense of earlier-crystallized |
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