 | | Journal (article/letter/editorial) | | quartz in the oxidized rocks of the Wilson Lake terrane, Labrador: calculated equilibria in NCKFMASHTO...NCKFMASHTO F. J. KORHONEN,1 R. POWELL2 AND J. H. STOUT3 1 Department of Applied Geology, Curtin University, GPO...ideal system. The Wilson Lake terrane in the Grenville Province of central Labrador preserves sapphirine...assemblages in highly oxidized bulk compositions, and provides an opportunity to explore the stability...stability of the additional phases, biotite, K-feldspar and melt, on the stability of sapphirine + quartz to |  | | Journal (article/letter/editorial) | | 1232-1237, 1985 Oriented hematiteinclusionsin sillimanite Mtcnenr E. FuBr,q.htp MA,roro AnIu.rr Depqrtment...Ontario N6A 587, Canada Abstract Oriented hematite inclusions in prismatic sillimanite grains from a sapphirine-bearing...sapphirine-bearing granulite from Wilson Lake, Labrador, have been studied by optical microscopyand single...crystalX-ray precession smallestdimension,and elongatedparallel to the sillimanite c-axis.In (001)sectionthey are...are orientedparallel to sillimanite{110}. The crystallographicorientationof the hematiteinclusionsis [120] |  | | Journal (article/letter/editorial) | | x Borosilicate- and phengite-bearing veins from the Grenville Province of Labrador: evidence for rapid...rapid uplift 1F. J. KORHONEN AND J. H. STOUT Department of Geology and Geophysics, University of Minnesota...migmatite terrane near Wilson Lake in the Grenville Province of central Labrador record a metamorphic event...host rocks. The discordant veins are undeformed and have undisturbed primary igneous/hydrothermal textures...as aggregates of kyanite, K-feldspar, phlogopite and minor dumortierite which are likely pseudomorphs |  | Herd, R. K., Ackermand, D., Thomas, A., Windley, B. F. (1987) Oxygen fugacity variations and mineral reactions in sapphirine-bearing paragneisses, E. Grenville province, Canada. Mineralogical Magazine, 51 (360) 203-206 doi:10.1180/minmag.1987.051.360.02 | Journal (article/letter/editorial) | | variations and mineral reactions in sapphirine-bearing paragneisses, E. Grenville province, Canada R. K. HERD...HERD Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada, KI OE8 D. ACKERMAND Mineralogisches...Mines and Energy, Govt. of Newfoundland and Labrador, P.O. Box 4750, St Johns, Newfoundland, Canada AND...200 km long block in the Grenville province in Labrador-Quebec. The occurrence of some of these rocks...mapping. The mineral assemblages, reactions, and compositions and the tectonic structure in the paragneisses |  | | Journal (article/letter/editorial) | | EARTH AND PLANETARYSCIENCELETTERS 10 (1971) 325-328. NORTH-HOLLANDPUBLISHINGCOMPANY S A P P H I R I...G R A N U L I T E S NEAR WILSON LAKE, CENTRAL LABRADOR, CANADA S.A. MORSE and John H. TALLEY Department...Department o f Geology, Franklin and Marshall College, Lancaster, Pennsylvania, 17602, U.S.A. Received 6 November...Sapphirine and magnetite are closely associated in elongate pods in the granulites of Wilson Lake, central...central Labrador, where quartz, hypersthene, sillimanite, kyanite, corundum, and spinel also occur in textural |  | | Journal (article/letter/editorial) | | from Wilson Lake, Labrador and their tectonic implications K.L. CURRIE, Geological Survey of Canada. 601...Ottuwa, Canada, KIA OE8 J. GITTINS, Department of Geology, University of Toronto, Toronto, Canada, MSS IA1...granulites in the Wilson Lake region contain the assemblage sapphirine t hypersthene + sillimanite t quartz.... Geochronology and geobarometry suggest it developed in early Proterozoic rocks at temperatures approaching...approaching 900°C and pressures above 10 kbar. Vein-like metasomatized rocks around a suite of mafic to ultramafic |  | | Journal (article/letter/editorial) | | EARTH AND PLANETARY SCIENCE LETTERS 12 (1971) 355-356. NORTH-HOLLAND PUBLIStIING COMPANY COMMENT ON...IN DEEP-SEATED GRANULITES NEAR WILSON LAKE, CENTRAL LABRADOR, CANADA" BY S.A. M O R S E A N D J.H....t e r s l 0 ( 1 9 7 1 ) 3 2 5 . J.M. MOORE, Jr. and LEONG Khee Meng* Department of Geology, Carleton... Ottawa, Ontario, KIS 5B6, Canada Received 10 September 1971 Morse and Talley [1] have ascribed an...sapphirine-bearing granulites from near Wilson Lake, Labrador. In 1966 Leong, while attached to a party |  | | Report (chapter) | | Province in eastern Labrador, Canada CHARLES E GOWER Newfoundland Department of Mines and Energy, PO Box...Box 8700, St John's, Newfoundland A1B 4J6, Canada Abstract: Rifting at c. 1.71 Ga separated the Mealy Mountains...Mountains terrane from pre-Labradorian Laurentia and resulted in a short-lived (backarc?) basin, followed...arcs and subduction were also short lived, terminating when accretion against the Makkovikian and Eastern...waning granitic magmatism until 1.60 Ga. The Labrador Orogen and older rocks in the Mealy Mountains terrane |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 41, 23--29 (1973) 9 by Springer-Verlag 1973 Polymorphism in Sapphirine Stefano...Stefano Merlino Institute of Mineralogy and Petrography, University of Fisa, Italy Received February...sapphirine, was found in granulites near Wilson Lake, Labrador. It is trielinic with unit cell data: a...several crystals of sapphirine from Wilson Lake were investigated and evidence was found of solid state...e e t (1967). S a p p h i r i n e is monoelinic and, assuming the o r i e n t a t i o n originally given |  | | Journal (article/letter/editorial) | | Mineral. and Petrel. 36, 49--62 (1972) 9 by Springer-Verlag 1972 The Reaction Enstatit% "b Sillimanite ~ Sapphirines~A-...in the System MgO--AI203--Si02 N. D. Chatterjee and W. Schreyer Institut f~r Mineralogie, t~uhr-UniversitE%...reaction aluminous enstatite solid solution d- sillimanite ~- sapphirine solid solution d- quartz was determined...experimentally in the pressure range between 12 and 20 kb. It is defined by four reversals at 15 kb,...10~ at 1190~ 15.9=t=1 kb; at 1300~ 17.2:t= 1 kb; and at 1400~ 18=i=1 kb. Among the coexisting phases the |  | | Report (issue) | | rocks or xenoliths with abundant aluminum and magnesium and low silicon. May occur as a primary magmatic...magmatic mineral in subsilicic rocks. Association: Sillimanite, kyanite, cordierite, kornerupine, corundum,...In Canada, at Wilson Lake, Labrador, Newfoundland. At Sakena, Vorokafotra, Bekily, Anjamiary, and Betroka...color. References: (1) Palache, C., H. Berman, and C. Frondel (1944) Dana's system of mineralogy, (7th...edition), v. I, 724{726. (2) Deer, W.A., R.A. Howie, and J. Zussman (1978) Rock-forming minerals, (2nd edition) |  | | Journal (article/letter/editorial) | | Orthopyroxeneâsillimaniteâquartz assemblages: distribution, petrology, quantitative PâTâX constraints and PâT paths...paths D. E. KELSEY, R. W. WHITE AND R. POWELL School of Earth Sciences, University of Melbourne, Victoria...commonly preserve a wide array of mineral assemblages and reaction textures that are useful for deciphering...pressure, temperature and bulk composition constraints on the development and preservation of characteristic...orthopyroxene + sillimanite + quartz are assessed with reference to calculated phase diagrams. In NCKFMASH and its |  | | Journal (article/letter/editorial) | | Contributions to Mineralogy and Petrology Contrib Mineral Petrol (1989) 103:203-215 9 Springer.-Verlag...of composition, temperature and pressure on the stability of the 1Tc and 2M polytypes of sapphirine Andrew...analyses and structural characterisation by means o f transmission electron microscopy and powder X-ray...diffraction are presented for a suite of natural and synthetic sapphirines. Most sapphirines appear to...tetrahedral cation radius or mean octahedral cation radius and the preferred polytype. The Tschermak substitution |  | | Report (issue) | | America Edited by Richard P. Tollo Department of Earth and Environmental Sciences George Washington University...Geological Survey of Canada GSC-QuĂ©bec, 880 Chemin Sainte-Foy QuĂ©bec, QuĂ©bec G1S 2L2 Canada James M. McLelland...thereof, such as abstracts, into computer-readable and/or transmittable form for personal or corporate use...StratigraphicâProterozoic. 2. GeologyâEast (U.S.) 3. GeologyâCanada, Eastern. I. Tollo, Richard P. II. Memoir (Geological...Richard P. Tollo, Louise Corriveau, James McLelland, and Mervin J. Bartholomew 1 Canadian Grenville Province |  | | Journal (article/letter/editorial) | | Temperatures and Pressures KAUSHIK DAS1*, SOMNATH DASGUPTA2 AND HIROYUKI MIURA1 1 DIVISION OF EARTH AND PLANETARY...ultrahigh-temperature (4900 C) crustal metamorphism, and allow interpretation of retrograde P±T trajectories...under both low and high f O2 conditions [near the quartz±fayalite±magnetite (QFM) and nickel±nickel ...oxide/haematite±magnetite (NNO/ HM) buffers, respectively], and theoretical considerations show that significant...systems FeO± MgO±Al2O3±SiO2 (FMAS) (Hensen, 1986) and K2O± FeO±MgO±Al2O3±SiO2±H2O (KFMASH) (Hensen & Harley |  | | Journal (article/letter/editorial) | | Southern India by R. K. L A L \ D. ACKERMAND 2 AND H. UPADHYAY1 1 Department of Geology, Banaras Hindu...addition these rocks contain orthopyroxene (Opx), sillimanite (Sill), garnet (Gt), cordierite (Cd), biotite...biotite, potash feldspar (Kf), plagioclase, and symplectites of Cd-Kf-Qz-Opx. The symplectites may have formed...Grain contacts of sapphirine and spinel with quartz are rarely observed and the incompatibility with quartz...Sa-Sill-Opx, Sa-Sill-Cd, Sa-Cd-Opx; (A-2) sapphirine and spinel-bearing: Sp-Sa-Sill-Opx-Qz, Sp-Sa-Sill, Sp-Sa-Opx |  | | Journal (article/letter/editorial) | | K2OâFeOâMgOâAl2O3âSiO2âH2OâTiO2âFe2O3 C. J. WHELLER AND R. POWELL School of Earth Sciences, University of...sapphirine+quartz-bearing granulites from Wilson Lake, Canada. Calculated PâT projections and compatibility diagrams in...approach, termed micro-/, to create such aâx relations and other aspects of the thermodynamic descriptions of...ring granulites from the UHT terrane of Wilson Lake, Canada. This terrane involves highly oxidized mineral...ascribed to FMAS (e.g. Hensen, 1971) places the [g] and [sp] invariant points in this system in the range |  | | Journal (article/letter/editorial) | | Contr. Mineral. and Petrol. 44, 295--311 (1974) 9 by Springer-Verlag 1974 A Calorimetric Investigation...Institute O. J. K l e p p a James Franck Institute and The Department of the Geophysical Sciences, The University...of solution of synthetic anhydrous Mg-cordierite and of its high-pressure breakdown assemblage sapphirine-~...694~ The AH of this reaction at this temperature and one atmosphere is 6.1 âą 1 kilocalorie per mole of...constructed which satisfies the heat of reaction data and all other reliable observations pertaining to the |  | | Report (chapter) | | London, Special Publications On the occurrence and characterization of ultrahigh-temperature crustal...Southern California on April 8, 2014 On the occurrence and characterization of ultrahigh-temperature crustal...S I M O N L. H A R L E Y Department of Geology and Geophysics, University of Edinburgh, Kings Buildings...cordierite, sillimanite, spinel and quartz in pelites and quartzites. Experimentally constrained and calculated...calculated FMAS and KFMASH petrogenetic grids involving these phases and additional osumilite and melt indicate |  | | Journal (article/letter/editorial) | | zones: occurrence and origin E.M. Cameron K. Hattori Geological Survey of Canada, 601 Booth Street,... Ottawa, K1AOE8, Canada Ottawa-Carleton Geoscience Centre and University of Ottawa, Ottawa, K I N 63[5...represented by exsolved hematite and ilmenite, coexisting with magnetite and by Mg-rich pyroxenes, the result...hematite-rich Rhombohedral and orthopyroxene with XMg averaging 0.54 for tonalite gneiss and 0.61 for metamorphosed...infiltration is evidenced by abundant CO2-rich inclusions and hydrothermal dolomite rocks with ~13Cin the range |  | | Journal (article/letter/editorial) | | (1990) 104:735-742 Contributions to Mineralogy and Petrology 9 Springer-Verlag1990 Liquidus phase relationships...applications to basalt petrogenesis and igneous sapphirine* Teh-Ching Liu and Dean C. Presnall Geosciences Program...(an), sapphirine (sa), and corundum (cor). Increasing pressure causes (1) the f o and a n primary phase fields...fields to contract, (2) the en, q, and cor fields to expand, (3) t h e f o - e n boundary line to move...smaller amount, and (5) a primary phase field for s a to appear at a pressure between 10 and 20 kbar. Seven |  | | Journal (article/letter/editorial) | | Continental Evolution Research Group, School of Earth and Environmental Sciences, The University of Adelaide...include sapphirine + quartz, orthopyroxene + sillimanite ± quartz and osumilite. However, UHT metamorphism has...feldspars and metamorphic pyroxenes. The worldwide number of UHT localities exceeds 40, and may continue...chemistry, e.g. the aluminium content of orthopyroxene, and calculated phase equilibria, based on thermodynamic...thermodynamic datasets that continue to be refined and improved. This contribution presents a review of UHT metamorphism |  | | Journal (article/letter/editorial) | | granulites and calc-silicate granulites of the Eastern Ghats, India SOMNATH DASGUPTA and PULAK SENGUPTA...Calcutta- 700 032, India High Mg-A1 granulites and calc-silicate granulites provide evidence for ultra-high...sapphirine, cordierite, orthopyroxene, garnet and sillimanite coexisting with either rutile-ilmenite or ...ilmenite. These high Mg-A1 rocks are poor in Zn and Cr, as reflected primarily in the composition of...coexistence of spinekordierite-quartz and sapphirine-quartz and stabilization of the assemblages orth |  | Das, Suman, Bhattacharya, Abhijit, Raith, Michael M., Bhadra, Subhadip, Banerjee, Manua (2006) Aluminous sapphirine granulites from the Eastern Ghats Belt (India): Phase relations and relevance to counterclockwise P-T history. European Journal of Mineralogy, 18 (1) 35-48 doi:10.1127/0935-1221/2006/0018-0035 | Journal (article/letter/editorial) | | the Eastern Ghats Belt (India): Phase relations and relevance to counterclockwise P-T history SUMAN DAS1... RAITH2, SUBHADIP BHADRA1 and MANUA BANERJEE1 1Department of Geology and Geophysics, Indian Institute...extensively replaced by biotite. Natural settings and experimental phase relations indicate the restitic...+ Spl = Spr. Volumetrically minor amounts of sillimanite associated with sapphirine were produced by the...activity-corrected M(F)AS grid constructed for Grt and Qtz-absent Mg, Al-rich metapelites suggests that |  | | Journal (article/letter/editorial) | | Metamorphic History of Sapphirine-bearing and Related Magnesian Gneisses from Namaqualand, South Africa...phlogopite, spinel, sillimanite, corundum, orthopyroxene, and gedrite in granulite facies Mg- and Al-rich paragneisses...produced nodular structures and intergrowths involving spinel, corundum, and sillimanite, pseudomorphing an earlier...which, taken together with existing thermodynamic and experimental data, allow the estimation of P-T slopes...sapphirine growth under increasing T, decreasing a(H2O), and constant or slightly increasing P. The preservation |
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