 | | Journal (article/letter/editorial) | | (1958) Soitr Chemi.calAnalysis, Prentice Hall, Englewood Cliffs, N. J. (1965) Free oxides, hydroxides,...Clays and. Clay Minerals,l0th Conf. Pregamon Press, New York,372-379. Nncnr.scnumr, G., H. F. DonNrrv eNo...Clays and,Clay Mi.nerals,llth Conf. Pergamon Press, New York, 117-135. Sunnuex, G. D. (1952) The titanium...MINERALOGIST, VOL. 50, JULY_AUGUS'I, 1965 A CORDIERITE-RICHMAGNETITE-HOGBOMITE.ORTHOPYROXENE HORNFELSFROM...xenolith, Iargely composed of partly pinitised cordierite, with lesser magnetite and accessory hdgbomite |  | | Journal (article/letter/editorial) | | /ndiana/Purdue University, Indianapolis, IN 46202, USA 2 Department of Geology, Research School of Earth...Earth Sciences, Victoria University, Wellington, New ZeaIand ' ABST RACT Mid-Cretaceous granulite gneisses...examples of Phanerozoic granulites, such as Fiordland, New Zealand (Oliver, 1977; Mattinson et af., 1986; McCulloch...6). Textural relationships and compositions of cordierite suggest formation after peak metamorphism by...bounding mylonite zone have trace amounts of cordierite. These samples are comparatively quartz-rich |  | | Journal (article/letter/editorial) | | amphiboles and orthoamphibole-cordierite rocks, Old Woman Mountains, SE California, USA EDWARD F. STODDARD 1 AND...27695-8208, USA 2Department of Geology, Vanderbilt University, Nashville, TN 37235, USA Abstract Proterozoic...addition to amphiboles, mineral assemblages include cordierite, biotite, garnet, Ca-rich plagioclase, and ilmenite_+rutile...occur locally in Al-rich enclaves associated with cordierite. Orthoamphiboles commonly exhibit complex microstructures...KEYWORDS: amphibolite, amphibole, orthoamphibole, cordierite, Old Woman Mountains, California. Introduction |  | | Journal (article/letter/editorial) | | mClange, northern California Klamath Mountains, USA M. M. DONATO U.S. Geological Survey, 345 Middlefield...Middlefield Road, MS 910, Menlo Park, California, USA ABSTRACT Mineral assemblages in pelitic, mafic, calcareous...quartz and chlorite. A small amount of altered cordierite was tentatively identified in a thin section...(Slaughter et al., 1975); (6) staurolite + quartz = cordierite + aluminosilicate + vapour (Richardson, 1968);...stable assemblage staurolite + quartz relative to cordierite + aluminosilicate (Fig. 8, reaction 6) places |  | | Report (issue) | | Deadwood Formation, __________________________ Englewood Formation.. _ __________--____-_-__--_ Pahasapa...including the Deadwood Formation (Upper Cambrian), Englewood Formation (Devonian and Lower Mississippian),...sillimanite, kyanite, staurolite, garnet, feldspar, cordierite, black tourmaline, brown tourmaline, ilmenite...In 1954 a new topographic base map was published, and post1954 mapping was done on this new base enlarged...interiors. Cordierite is an abundant constituent of some beds (table 1, sample 6-362). The Cordierite is medium |  | | Report (issue) | | ________________ Calc-silicate gneiss._____________________ Cordierite-biotite and microcline-biotite schists______...Deadwood formation..____________-------_-----Englewood limestone._________________--_-----_Pahasapa ...Geologic map and sections, Fourmile quadrangle, Custer County, South Dakota. 22. Geologic map and sections of...ABSTRACT k., is on The Fourrnile quadrangle, Ouster County, S. Dak., the southwest side of the Black Hills...calcite-hornblende ^rnblende gneiss, calc-silicate gneiss, cordierite-biotite schist, microclinedcroclinebiotite schist |  | GORDON, S. M., WHITNEY, D. L., MILLER, R. B., McLEAN, N., SEATON, N. C. A. (2010) Metamorphism and deformation at different structural levels in a strike-slip fault zone, Ross Lake fault, North Cascades, USA. Journal of Metamorphic Geology, 28 (2) 117-136 doi:10.1111/j.1525-1314.2009.00860.x | Journal (article/letter/editorial) | | strike-slip fault zone, Ross Lake fault, North Cascades, USA S. M. GORDON,1* D. L. WHITNEY,1 R. B. MILLER,2 N...University of Minnesota, Minneapolis, MN 55455, USA (gordon@geol.ucsb.edu) 2 Department of Geology, San...San José State University, San José, CA 9519, USA 3 Earth and Planetary Sciences, Massachusetts Institute...Institute of Technology, Cambridge, MA 02139, USA ABSTRACT Continental crust is displaced in strike-slip...migmatitic unit of the North Cascades, Washington (USA), was metamorphosed at depths of 25–30 km in a continental |  | | Journal (article/letter/editorial) | | low-pressure assemblages such as sapphirine-spinel-cordierite (Leong & Moore, 1972; Herd, Ackermand, Thomas...hematite, and containing segregations of sapphirine, cordierite, corundum and spinel. To the south-east of Wilson...-AnI5), cordierite, sapphirine, spinel, orthopyroxene, sillimanite and gedrite. Sapphirine, cordierite, spinel...twinned porphyroblasts, as symplectites with cordierite, and as coronas between spinel and orthopyroxene...and between specular hematite and hypersthene. Cordierite occurs mainly as coronas and symplectites with |  | | Journal (article/letter/editorial) | | 3651 University Avenue, Los Angeles, CA 90089-0740, USA (paterson@usc.edu) 2 Department of Earth and Planetary...occurred between the BMFS and the MFS (Fig. 4b). Our new data (c. 90 samples and 35 ®eld measurements) from...Cretaceous intrusions. Porphyroblasts of andalusite, cordierite, ¡ garnet and ¡ ®brous sillimanite occur in these...(3) the only known occurrence of andalusite, cordierite and sillimanite in the Foothills Terrane is in...events; (3) this region was never deeply buried and cordierite and andalusite porphyroblasts grew only in contact |  | | Journal (article/letter/editorial) | | Oregon State University, Corvallis, OR 97331-5506, USA Received January 8, 1992 / Accepted May 21, 1992...melting and hybridization of mixed magmas to yield new equilibrium mineral assemblages during the middle...sample AG-87-45, which is from a partially molten, cordierite granite inclusion in andesite lava AG-87-46....rhyolites and one sample of partially molten cordierite granite (AG-87-45), found as an inclusion in...between 700 and 1,200 MPa, above the stability of cordierite, which occurs in one of the inclusions. Also |  | | Report (issue) | | digital version, subject to correction as time and new data permit; we invite user comments and corrections...I. (Ernst, W.G. ed.), Prentice-Hall, Englewood Cliffs, New Jersey; p. 253-283 planimetric map (fig 10-2)...220 m; widespread exposures in eastern Ventura County. Overlies Modelo Formation strata in the Topatopa...by Hershey (1902). Widespread in eastern Ventura County; several authors have mapped members in different...220 m; widespread exposures in eastern Ventura County. Overlies Modelo Formation in Topatopa Mountains; |  | | Journal (article/letter/editorial) | | IurnooucrroN In structural refinementsof low cordierite (Gibbs, 1966) and beryl (Gibbs, Breck, and Meagher...quartz low cristobalite coesite narsarsukite beryl cordierite sillimanite thortveitite protoamphibole hemimorphite...Che+ni.stty, Blaisdell Publishing Company, New Nork, New York FrwcaR, L. W. (1969) The crystal structure...(1966) The polymorphism of cordierite I: the crystal structure of low cordierite Amer Mineral.. 51. 1068-1087...Plrysical Chemi,stry. Prentice Hall, Inc, Englewood Ciifis, New Jersey, 537-538 Nor.r., W. (1963) The silicate |  | | Journal (article/letter/editorial) | | University of Minnesota, Minneapolis, Minnesota 55455, USA, (corresponding author, e-mail: whitn008@tc.umn.edu)...Jose State University, San Jose, California 95192, USA 3 Department of Earth Sciences, University of Southern...Southern California, Los Angeles, California 90089, USA A B S TR A C T The >1800 km long Coast Mountains–North...as indicated, for example, by sillimanite and cordierite after kyanite and garnet, respectively. Petrological...andalusite-bearing rocks around the intrusion (Fig. 3). Cordierite is also widespread near the batholith (Plummer |  | | Journal (article/letter/editorial) | | modal mineralogy. Three distinct facies (i.e. cordierite^plagioclase, mullite^plagioclase palisade and...were erupted during recent paroxysms and represent new 542 Downloaded from http://petrology.oxfordjournals...(TEM) TEM investigations were performed on a few cordierite grains from the B3 sample. The grains were prepared...and 35 keVand 30 mA, respectively. One of the cordierite-bearing samples from the outermost part of the...associations, which can be grouped into: (1) cordierite^plagioclase facies; (2) mullite^plagioclase palisade |  | | Journal (article/letter/editorial) | | Rnlrnrucos Krnn, P. F. (1945) Cattierite ancl vaesite: new Co-Ni minerals from the Belgian Congo. A m. M'ineral...and the siliceousminerals were dissoived.Sincethe new mineral was not very solublein HF, it accumulated...(1958) Soitr Chemi.calAnalysis, Prentice Hall, Englewood Cliffs, N. J. (1965) Free oxides, hydroxides,...Clays and. Clay Minerals,l0th Conf. Pregamon Press, New York,372-379. Nncnr.scnumr, G., H. F. DonNrrv eNo...Clays and,Clay Mi.nerals,llth Conf. Pergamon Press, New York, 117-135. Sunnuex, G. D. (1952) The titanium |  | | Journal (article/letter/editorial) | | al and by Speer(1981)for biotite and biotite-cordierite assemblagesin the Cloud Creek pluton, South Carolina...Mountain district, In-KoPah Mountains, San Diego County, California, 216 p. M.S. thesis,San Diego State...PeninsularRangesbatholith, southern and Baja California, USA and Mexico. GeotogicalSociety of America Abstracts...Programs, 19, 848 Speer,J.A (l 98 l) Petrology of cordierite- and almandine-bearinggranitoid plutons of southem...gem-bearinggranitic pegmatite-aplitedikes, San Diego County, California. Contributions to Mineralogy and Petrology |  | | Journal (article/letter/editorial) | | DEPTH followed by the emplacement of biotite–cordierite hornfels. The transformation of metapelites on...muscovite + chlorite + quartz → cordierite + biotite + H2O. Orthoclase– cordierite–biotite hornfels perhaps...by the reaction muscovite + biotite + quartz → cordierite + potassium feldspar + H2O. The first reaction...reaction (the emplacement of biotite and cordierite) at the pressure of 3 kbar occurs at ~560°C; 2 kbar, ~530°C;...[15]. The second reaction (the emplacement of cordierite and potassium feldspar) at the pressure of 3 |  | | Journal (article/letter/editorial) | | -- Printed in The Netherlands METASEDIMENTARY CORDIERITE-GEDRITE ROCKS OF ARCHEAN AGE NEAR YELLOWKNIFE...ABSTRACT D.S. Kaminemi, 1979. Metasedimentary cordierite-gedrite rocks of Archean age near Yellowknife... form broad aureoles around granite plutons. Cordierite-gedrite greywackes constitute an important metamorphic...the aureoles. The chemical composition of the cordierite-gedrite greywackes, from Yellowknife compare...greywackes reported from other localities. The cordierite-gedrite rocks and rocks free of these minerals |  | | Journal (article/letter/editorial) | | southern Klamath Mountains of northern California, USA J . W . GOODGE Department of Geological Sciences...Southern Methodist University, Dallas, TX 75275, USA ABSTRACT High-PIT metamorphic parageneses are preserved...are quite different. The bulk of the paper relays new petrological data from the EHT, which are compared...these include muscovite + biotite f garnet f cordierite in metasediments and hornblende + plagioclase...(1986). These samples contain textures indicating new metamorphic recrystallization and n o evidence of |  | | Journal (article/letter/editorial) | | of structural and physical simiiarities with cordierite and beryl, osumilite is classified with the framework...and cordierite. In fact, Miyashiro (1956) suggeststhat much of the optically positive cordierite described...tetrahedra and its close structural similarity with cordierite and beryl, described it as a ring silicate. On...Zoltai (1960) has classified osumilite as well as cordierite and beryl with the framework silicates because...ring silicates.Recent structural refinementsof cordierite (Gibbs, 1966; Meagher and Gibbs, 1967) and beryl |  | | Journal (article/letter/editorial) | | temperatures of individual samples. An additional garnet-cordierite zone is also considered from complementary literature...zone to sillimanite-K-feldspar zone to garnet-cordierite zone. Using the petrogenetic grid approach to...Fe), and (e) Sillimanite-K-feldspar and Garnet-cordierite data. The shaded circles are the highest-grade...Lakes–Dead Rivers Basin region, Western Maine, p. 1–23. New England Intercollegiate Geology Conference, 62nd...Cheney, J.T., and Conatore, P.D. (1975) Coexisting cordierite + biotite + chlorite from the Rumford Quadrangle |  | | Book | | University Prentice-Hall, Inc., Englewood Cliffs , New Jersey Library of Congress Cataloging Tennissen...0-13-610501-7 ©1974 by Prentice-Hall, Inc., No Englewood Cliffs, New book may be reproduced in any form or...Limited, Prentice-Hall of Japan, Inc., Tokyo New Delhi Jersey Dedicated to Virginia Digitized by the...organic processes of decomposition and regeneration of new substances. 3 Introduction and gas may not be...more material is added to early crystallites, the new material will continue to become attached to them |  | | Journal (article/letter/editorial) | | MICRO-MOUNTER Conducted by Neol Yedlin—129 Englewood Drive, New Haven, Conn. Downloaded by [University...Brazilianite, Smith Mine, New Hampshire. 15. Osumiliate (high temperature cordierite) from Japan. 16. Rutile...Good, good! Now we'll have a superb "—opening for a new purpose. The seccollection of M / M s at the Smithsonian |  | | Report (volume) | | C. Lasaga Geological Laboratory Yale University New Haven, Connecticut 06520 Peter I. Nabelek Dept. of...As in any field of endeavor, we are provided with new questions, thereby dictating future directions of...contact metamorphosed pelites Cordierite-garnet-muscovite Staurolite-cordierite-muscovite Kyanite Quartz-absent...stability—the effect of Ca and Mn Staurolite-cordierite-muscovite K-feldspar + chlorite K-feldspar +...Sillimanite + biotite Cordierite + biotite + chlorite Andalusite + cordierite + biotite Sillimanite + |  | Johnson, Scott E., Paterson, Scott R., Fletcher, John M., Girty, Gary H., Kimbrough, David L., Martín-Barajas, Arturo - Eds. (2003) Tectonic evolution of northwestern Mexico and the Southwestern USA. GSA Special Paper 374. Geological Society of America doi:10.1130/0-8137-2374-4 | Report (issue) | | evolution of northwestern México and the southwestern USA Edited by Scott E. Johnson Department of Earth Sciences...Center University of Maine Orono, Maine 04469-5790 USA Scott R. Paterson Department of Earth Sciences University...of Southern California Los Angeles, CA 90831-0740 USA John M. Fletcher Departamento de Geologia CICESE...CICESE P.O. Box 434843 San Diego, California 92143 USA Gary H. Girty Department of Geological Sciences San...State University San Diego, California 92182-1020 USA David L. Kimbrough Department of Geological Sciences |
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