 | Lloyd, F. E., Edgar, A. D., Forsyth, D. M., Barnett, R. L. (1991) The paragenesis of upper-mantle xenoliths from the Quaternary volcanics south-east of Gees, West Eifel, Germany. Mineralogical Magazine, 55 (378) 95-112 doi:10.1180/minmag.1991.055.378.08 | Journal (article/letter/editorial) | | Quaternary volcanics south-east of Gees, West Eifel, Germany F. E. LLOYD Department of Geoscience, University...olivine, pyroxene, upper mantle, Gees, West Eifel, Germany. Introduction TaE Quaternary West Eifel volcanic...Lloyd, 1972). Studies have concentrated on the Dreis Mineralogical Magazine, March 1991, Vol. 55, pp...95-112 (~ Copyright the Mineralogical Society (Dreiser Weiher) site (Frechen, 1973; Aoki and Kushiro, 1968;...Kushiro (1968) investigated clinopyroxenes from the Dreis xenoliths whereas Lloyd and Bailey (1975) and Becker |  | | Journal (article/letter/editorial) | | Clinopyroxenes from Ultramafic Inclusions in Dreiser Weiher, Eifel KEN-ICHIRO _A_OKIand IKUO I(USHI~O Institute...clinopyroxenes of crystal lapilli in tuff of Dreiser Weiher in Eifel, Germany, have been separated and chemically...lherzolite inclusions in basaltic rocks in I)reiser Weiher and other localities; the former has higher contents...These two types have also been found in tuff of Dreiser Weiher in Eifel ( F ~ E c ~ , 1948, 1963; Ross etal... 1963) considered all of the inclusions in Dreiser Weiher as crystal accumulates from alkali basalt magmas |  | | Journal (article/letter/editorial) | | amphibole of M g ' = 5[~;.3. Solid solution of hercynite in magnetite and t Iv0spir~el is limited at low...intermediate pressure, as inferred from nodules of Dreis~r Weiher, Eifel (O'Hara 1965). In agreement with this...or hematite as described from the breakdown of hercynite (Turnock & Eugster 1962). Alternatively, the aluminous...titanomagnetite width 23 to 13.7 reel per cent hercynite formed al temperatures above 800--680 LITHOS14...agreement with this view the ferrisalite from Dreiser Weiher coexists with plagioclase (Aoki & Kushiro 1968; |  | | Journal (article/letter/editorial) | | University of Oregon, pers. comm. D = Dreiser Weiher, Germany; Aoki and Kushiro (1968). Analysis E-7...to the m a g n e s i a n e n d of the spinel-hercynite series. The augite resembles pyroxenes crystallised...pleonaste-bearing clinopyroxenites from the Dreiser Weiher tuff-pipes in Germany, with augite compositions very similar...clinopyroxenes from ultramafic inclusions in Dreiser Weiher, Eifel. Contr. Mineral. Petrol. 18, 326-337 |  | | Journal (article/letter/editorial) | | Cr# of 7.9–8.2% and belongs to the pleonaste–hercynite series. The potential partial melting degree of...mineralogy of ultramafic xenoliths from Dreiser Weiher (West Germany) and distinguished two suites represented...of two spinel peridotite suites from Dreiser Weiher, West Germany. Geochim. Cosmochim. Acta 44, 457–470 |  | | Journal (article/letter/editorial) | | includes phlogopite) * Spinel (mainly chromite-hercynite) Orthopyroxene (usually minor) Plagioclase Titanomagnetite... Hawaii and Itinome-gata, Japan [8] ; Dreiser Weiher, Germany [8,39] ; Victoria, Australia [15] ; New...Clinopyroxenes from Group I and II inclusions at Dreiser Weiher (Eifel, Germany) exhibit similar differences [28]....PA-218G and -218B. Group II clinopyroxenes from Dreiser Weiher enclosed by dashed line [28]. San Carlos Group...], Bandera Crater, New Mexico [86] and Dreiser Weiher, Germany [87] are consistent with a cognate origin; |  | | Journal (article/letter/editorial) | | albite, I56; - - , anal., d2o i, 489. Amoibite, Germany, anal., opt., X-ray, 26. Amos Stream, New Caledonia...with hornblende, 923. Dadsonite, Canada, Nevada, Germany, and synthetic, anal., opt., X-ray, 437. Darkainle...X-ray powder data for idocrase, 343. Drachenfels, Germany, alkali feldspar, anal., d2o i, 489. Drakewalls...Gunnislake, Cornwall, posjnakite, 74o. Dreiser Weiher, Eifel, Germany, spinel-lherzolite xenoliths, 726....(apatite+kaolinite), I23. Gersdorffite, Canada, Germany, and Slovakia, anal., opt. X-ray, zoning, 26; Austria |  | | Journal (article/letter/editorial) | | retrograde reaction coronas of cordierite and hercynite+cordierite are formed between garnet and kyanite...produce garnet+sillimanite and garnet+sillimanite+hercynite with increasing temperature; and (6) in sheared...feldspar-rich, and the latter is Ti-oxide-rich and hercynite- and staurolite-bearing. The Na–K-rich pelitic...biotite, with accessory ilmenite, magnetite, hercynite, staurolite, orthopyroxene, corundum, zircon and...Sillimanite, staurolite, ilmenite, magnetite, hercynite, biotite, quartz, plagioclase and sparse kyanite |  | | Journal (article/letter/editorial) | | y., Joachimsthal at about 200 m.y., and Baden, Germany, at about 110 m.y. A large number of pitchblende...age. Diopside separated from a bomb from Dreiser Weiher, Germany, contained 2 parts per million lead with...composition almost identical with that of the Dreiser Weiher bomb. An olivine bomb from the western branch...today. The uranium now in the diopside of the Dreiser Weiher bomb would have changed the 206/204 ratio of...5 almanditeP2 iron-cordieritef 5 fayalitef hercynite passesthrough the points 1030' C.-10,000 bars; |  | | Journal (article/letter/editorial) | | y., Joachimsthal at about 200 m.y., and Baden, Germany, at about 110 m.y. A large number of pitchblende...age. Diopside separated from a bomb from Dreiser Weiher, Germany, contained 2 parts per million lead with...composition almost identical with that of the Dreiser Weiher bomb. An olivine bomb from the western branch...today. The uranium now in the diopside of the Dreiser Weiher bomb would have changed the 206/204 ratio of...5 almanditeP2 iron-cordieritef 5 fayalitef hercynite passesthrough the points 1030' C.-10,000 bars; |  | | Journal (article/letter/editorial) | | included in clinopyroxene lies almost on the spinel hercynite join. The more magnesian olivine, the more chromian...have analyzed nephelines from the Löbauer Berg (Germany) nephelinite in which early euhedral nepheline...clinopyroxenes from ultramafic inclusions in Dreiser Weiher, Eifel. Contributions to Mineralogy and Petrology...peralkaline melts: The Katzenbuckel volcano, Southwest Germany. Lithos, 91, 262 285. Mathias, M. (1956) The petrology |  | | Journal (article/letter/editorial) | | members Ulv6spinel Magnetite Chromite Spinel Hercynite n a 0 (A) Colour 0.2 0.6 10.5 79.1 9.6 1.781-i...clinopyroxenes from ultramMic inclusions in Dreiser Weiher Eifel. Contr. Mineral. and Petrol. 18, 326-337 |  | | Journal (article/letter/editorial) | | of two spine1 peridotite suites from Dreiser W&her, West Germany basin--I. Methane sediment-water exchange...829 dog, urolith dolomite 829,1425,1723,2045 Dreiser Weiher 457 DSDP rocks 141,999,1463,2125 dunite 2111...1683 geothermometer 61i,759,857,1279,1363 457 Germany, peridotite 1509.1519,1599.1643 1509 Gibbs free...grossular 2097 H2 685 HAL, Allende 189,539 He 685 hercynite 1399 Rg 685 hibonite 1543 H20 513 howardite 1103...A. R. D. D. T. R. S. E. S. G. 6. W. Hofmann, Germany F. Jones, U.S.A. M. Kerrick, U.S.A. Langmuir, U |  | Barkov, Andrei Y., Nixon, Graham T., Levson, Victor M., Martin, Robert F., Fleet, Michael E. (2013) CHROMIAN SPINEL FROM PGE-BEARING PLACER DEPOSITS, BRITISH COLUMBIA, CANADA: MINERALOGICAL ASSOCIATIONS AND PROVENANCE. The Canadian Mineralogist, 51 (4) 501-536 doi:10.3749/canmin.51.4.501 | Journal (article/letter/editorial) | | – Fe2+Cr2O4) and solid solutions approaching hercynite (ideally, Fe2+Al2O4), gahnite (ZnAl2O4) and spinel...magnesiochromite (MgCr2O4), Chr: chromite (Fe2+Cr2O4), Hc: hercynite (Fe2+Al2O4), and Spl: spinel sensu stricto (MgAl2O4)...data for spinel with significant amounts of the hercynite and spinel (sensu stricto) components. Results...ANALYSES OF DETRITAL GRAINS OF SPINEL, GAHNITE AND HERCYNITE-RICH CHROMIAN SPINEL ________________________...enriched in spinel (sensu stricto), gahnite and hercynite components are given in Table 4. Samples VLE-2001-12c |  | | Journal (article/letter/editorial) | | from Australia (Lovering and White, 1964) and Germany (Okrusch et al., 1979). Granulite nodules of the...All are aluminous forming solid solutions of hercynite (41-57%) and spinel (27-49%) with smaller amounts...clinopyroxenes from ultramafic inclusions in Dreiser Weiher, Eifel. Contrib. Mineral. Petrol. 18,326-37...metabasite ejecta in the Laacher See area, Eifel, West Germany. Lithos, 12,251-70. Padovani, E. R. and Carter...Differences and similarities between the Eifel (F.R. Germany) and Tariat Depression (central Mongolia) as evidenced |  | | Report (issue) | | leading museums of the U.S., England, France, Germany, Austria, and Italy. Many folders have summaries... no. 6, 44804 (1980). New mineral from Hegau, Germany. Monoclinic, 12, a 10.226, b 10.422, c 9.884A,...analyses (7) from metabdsites, Laacher See area, Germany - hornblendes. AMPHIBULE. Usherovich and Babushkina...Rare earths in 1 from spinel peridotites, Dreiser Weiher, Germany. AMPHIBOLE. Suzuki and Shiraki, Contrib...Analyses from Westfield, Mass., and Herbornseslbach, Germany. BABINGTONITE. Franzini et al., (Rend. Soc. Ital |  | | Journal (article/letter/editorial) | | is 100 o r 200 "C lower than 860 "C, where the hercynite-magnetite solvus closes (Turnock & Eugster, 1972)...clinopyroxenes from ultramafic inclusions in Dreiser Weiher, Eifel. Contr. Miner. Petrol. 18, 326-77. Arai |  | | Journal (article/letter/editorial) | | FREIBERG, GERMANY 2 GEOFORSCHUNGSZENTRUM POTSDAM, TELEGRAFENBERG, D-14473 POTSDAM, GERMANY RECEIVED...& Prinz, 1978); West Eifel and Rhön areas in Germany ( Jagoutz et al., 1979; Stosch & Seck, 1980; Zinngrebe...almost completely transformed to hornblende and hercynite. these coarse equant lherzolites consists of...were performed at the University of Freiberg (Germany) using a JEOL JXA-8900R electron 319 JOURNAL...continuous chemical transition to secondary, green hercynite. In the olivine clinopyroxenite, spinel occurs |  | | Journal (article/letter/editorial) | | chromite 009-0-27, magnesio-chromite < 0-20, and hercynite < 012. Minor amounts of magnetite ( < 004) and...amphibole-bearing (898-975 °Q xenoliths from the Eifel of West Germany have lower Tw than 6 anhydrous xenoliths (1113-1164...geochemistry of peridotite xenoliths from the Eifel (West Germany) and their bearing on the evolution of the subcontinental...of two spinel peridotite suites from Dreiser Weiher, West Germany. Ibid. 44, 457-70. Swanberg, C. A, & |  | | Book (volume) | | 1), show that neither chromite (FeCr204) nor hercynite (FeA1204) are stable at 1300øCand an fO2 value...magnesioferrite; Mt = magnetite; Sp = spinel; Her = hercynite; PC = picrochromite; and Chr = chromite. 191...interstitial amph; 3 = biotite core; 4 = garnet 5 = hercynite in amph; 6 = feldspar in gnt; 7 = opx in mica...low-pressure garnet breakdo%n• and reaction. Hercynite is also present as perfect euhedral Amphibolites...volcanics et al. of West Elf el, 1975) contain Germany nodules bearing clinopyroxenes, amphibole, dark |  | | Book | | distinctive textures and the formation of plagioclase, hercynite and corundum. Rare kyanite and quartz-feldspar...Welfengarfen 1, D-3000 Hannover, Federal Republic of Germany ) D. H. Green (dept, of Geology, University of...distinctly layered eclogite, HRV15 which contains hercynite spinel as a primary phase, and which was selected...Mainz,FRG) Ultramafic nodules from West-Eifel/Germany, Massif Central/France and Kapfenstein/Austria...the pyroclastic deposit from the Dreiser Weiher Maar (West-Eifel/Germany) are in most cases unaltered. Two |  | | Report (issue) | | Goldschmidtstrasse ill, 3400 Gottingen, Federal Republic of Germany ABSTRACT We review mantle redox models and present...separates: Ol = olivine F077; Sp = spinels (magnetite-hercynite-spinel solid solution); and Cpx = clinopyroxene...of two spinel peridotite suites from Dreiser Weiher, West Germany: Geochimica et Cos¬ mochimica Acta,...of two spinel peridotite suites from Dreiser Weiher, West Germany: Geochimica et Cos¬ mochimica Acta,...Kapfenstein Ethiopia: Assab France: Massif Central Germany: Dreiser Wei her Vogelsberg J — Kuno and Aoki, 1970 |  | | Journal (article/letter/editorial) | | Geoinstitut, Universitaet Bayreuth, D95440 Bayreuth, Germany 3 Carnegie Institution of Washington, 5251 Broad...1 Bayerisches Geoinstitut, Bayreuth, D-95440, Germany (Sylvie.Demouchy@uni-bayreuth.de, Dan.Frost@unibayreuth...fr) 3 Institut für Geowissenschaften, Tübingen, Germany (hans.keppler@uni-tuebingen.de) During the last...Bayerisches Geoinstitut, Universität Bayreuth, Germany (geoffrey.bromiley@uni-bayreuth.de) 2 École Normale...Department of Earth Sciences, University of Göttingen, Germany (rstalde@gwdg.de) Water plays a crucial role for |  | | Book | | Binding: Lüderitz & Bauer, Berlin. Printed in Germany. Dedicated to my former teacher and friend Professor...Grigoriev (U.S.S.R) Prof. Dr. F.K. Drescher-Kaden (Germany) Mr. D. Minatidis (Canada) Dr. E. Mposkos (Athens)... Dr. Thesis, University of Frankfurt am Main, Germany. Fig. 551, by Wager and Deer from Theoretical Petrology...textures. Most impressive skeletal "spinifex" hercynite textures are observed by E. Mposkos in the Larymna...with p y r o p e . Z o b l i t z , S a x o n y , Germany. With c r o s s e d nicols. Fig. 2 2 6 S p e s |  | | Book (edition) | | mines of Saxony; also Andreasberg, Harz Mts., Germany; Joachimstal and Pfibram, Bohemia; in Hungary;...Sala in Sweden; Andreasberg in the Harz Mts., Germany; Allemont, Dauphine, France; Pfibram, Bohemia;...Joachimstal in Bohemia; Andreasberg in the Harz Mts., Germany; Allemont in Dauphine, France; at various points...and elsewhere in the Ural Mts. In HNp Nassau, Germany. Common in Cornwall, England. Occurs in Brazil...gives a silvery luster. Obs. From Germany in the Rhine-Palatinate at and at Moschel-Landsberg Jriednchssegen |
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Dreiser Weiher, Dreis, Dreis-Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany