 | | Book (edition) | | org/details/mineralsofnewmexOOnort MINERALS OF NEW MEXICO Before all things, there which has them ...that 1825 mining opened the West- . —Charles W. Henderson, 1933 MINERALS of New Mexico STUART A...Mew Mexico PROPERTY OF HBSIER JR. HIGH SCH LIBRARY Revised Edition UNIVERSITY OF NEW MEXICO PRESS...ALBUQUERQUE © 1944. 1959. UNIVERSITY OFNEW MEXICO PRESS ALL RIGHTS RESERVED REVISED EDITION LIBRARY...BOUND AT THE UNIVERSITY OF NEW MEXICO PRINTING PLANT ALBUQUERQUE, NEW MEXICO, U. S. A. FOR IVAH 1 |  | | Report (chapter) | | Metamorphic evolution of Proterozoic rocks in New Mexico Jeffrey A. Grambling, Michael L. Williams, Christopher...of northern New Mexico is known for the coexistence of Ky, And and Sil across a minimum area of 75 000...FIG. 1. Preliminary Proterozoic terrane map of New Mexico. Rocks of uncertain affinity are shown with queries...S r ages from schistose rocks across northern New Mexico fall near 1400 Ma; and K - A r and R b - S r...deformation. Low-angle mylonites that preserve quartz ribbons and grain-size reduction occur locally |  | Beurlen, H., Thomas, R., Melgarejo, J. C., Da Silva, J. M. R., Rhede, D., Soares, D. R., Da Silva, M. R. R. (2013) Chrysoberyl-sillimanite association from the Roncadeira pegmatite, Borborema Province, Brazil: implications for gemstone exploration. Journal of GEOsciences, 58 (2) 79-90 | Journal (article/letter/editorial) | | to two centimeters across. It is associated with quartz and fibrolitic sillimanite along centimeter-thick...(Cbl) contains commonly small rounded inclusions of quartz and microscopic fibrous radial aggregates of sillimanite...Beryl + albite + muscovite + H+ = chrysoberyl + quartz + sillimanite + Na + K + H2O, seems to be the most...92). The origin of sillimanite + chrysoberyl + quartz under amphibolite-grade metamorphic conditions...3.5 to 5 kbar) implies either an existence of a new generation of syn-metamorphic REL-pegmatites in the |  | | Journal (article/letter/editorial) | | bearing (Schumacher 1985) and devoid of muscovite + quartz (Atkin 1978; Loomis 1972; Stoddard 1979: Tuccillo...spinel is a typical mineral of both quartz-bearing (Waters 1991) and quartz-free metapelitic rocks (Ganguly...actually taken place in the m u s c o v i t e + quartz-free d o m a i n s of the rock. Geo-petrographic...fibrolitic and coarse-grained sillimanite, muscovite, quartz, oligoclase, ilmenite and graphite; metastable...due to its complete breakdown in the presence of quartz and muscovite (Cesare 1992). However, staurolite |  | | Journal (article/letter/editorial) | | Southern California, Los Angeles, CA 90089-0740, USA (Received October 7, 1992; revised and accepted January...from a two-dimensional cross-section through the area. These possibilities highlight the limitations of...concentric zoning in the pluton, consisting of a quartz-monzodiorite rim and a granodiorite core, (4) gradual...zones of "granulated" (presumably recrystallized) quartz deflected around augen and (4) aligned plagioclase...plagioclase, microcline, hornblende and biotite, most quartz grains and aggregates being equant, not elongate |  | | Report (issue) | | Department of Geology University of New Mexico Albuquerque, New Mexico 87131 Barbara J. Tewksbury Department...Department of Geology Hamilton College Clinton, New York 13323 ~ ‘PAPER 235 1989 © 1989 The Geological...CIP Cover Photo: Proterozoic rocks of northern New Mexico are separated into two tectonometamorphic plates... schist, with biotite, muscovite, hematite and quartz, characteristic of specimens collected well above...potassium feldspar shows cross-hatched twinning, and quartz is colorless. North is to the right, and the long |  | | Report (chapter) | | service click here to receive free e-mail alerts when new articles cite this article Permission request click...of porphyroblasts in their original positions in quartz-rich or Q-domains (hinge zones of crenulation microfolds)...inclusion trails in a schist from the Lukmanier area, Switzerland. Folding in the matrix has intensified...inclusions) in a phyUitic schist from the Lukmanier area, Switzerland, showing markedly curved inclusion...adjacent to the cordierite porphyroblasts and large quartz aggregates (Fig. 7). These observations suggest |  | | Journal (article/letter/editorial) | | rocks in the Cimarron Mountains, northern New Mexico, USA J . A . G R A M B L I N G ' A N D R . D. D...Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA 'Department of Geology, University...University of Georgia, Athens, GA 30602, USA ABSTRACT Portions of three Proterozoic tectonostratigraphic sequences...sequences are exposed in the Cimarron Mountains of New Mexico. The Cimarron River tectonic unit has affinities...plutonic/volcanic complex. Igneous hornblende from a quartz diorite stock records an emplacement pressure of |  | | Journal (article/letter/editorial) | | zones, which are characterized by: (1) muscovite–quartz schist; (2) andalusite– cordierite–K-feldspar granofels...developed in siltstone layers that are separated by quartz-rich, unmelted metapsammite layers. Melt segregation...resorbed edges, as well as large K-feldspar and quartz augen. This unit of comparatively Ca-rich migmatites...and nebulitic migmatites throughout most of the area formed as a result of in-situ melting. A biotit...Arunta Block (Noakes, 1953; Fig. 1 )—an extensive area of complexly deformed, lowto high-grade Proterozoic |  | | Journal (article/letter/editorial) | | inclusions trapped in most minerals, the absence of quartz and K-feldspar, and the Al2O3-rich (23–33 wt%)...to 900 rC is not surprising, if the absence of quartz in the xenoliths and the high TiO2 contents of...rounded inclusions in cordierite and andalusite. Quartz, K-feldspar, and mullite have not been observed...sillimanite lamella and the andalusite host. (c) Selected-area electron diffraction (SAED) pattern at the interface...breaking and, after slight displacement of the cations, new formation of Si-O and Al-O bonds. Diffusion distances |  | | Journal (article/letter/editorial) | | regional deformation. High-T deformation fabrics of quartz and plagioclase in the intrusive bodies, together...contact aureole, as well as the high-T deformation of quartz, point to a long-lasting history of partly synchronous...régionale. Les microstructures dues à la déformation du quartz et du plagioclase à température élevée, ainsi que...l’auréole de contact, de même que la déformation du quartz à température élevée, indiquent une période de...muscovite – chlorite – quartz – plagioclase – graphite schist, with veins of quartz, chlorite, titanite |  | | Journal (article/letter/editorial) | | L . Block (Noakes, 1953; Fig. 1), an extensive area of complexly deformed, low- to high-grade Proterozoic...al., 1984; Stewart et al., 1984). The Mt Stafford area is dominated by a metasedimentary sequence called...pre-1820 Ma D1–M1 event (Collins & Williams, 1995). The area preserves only limited effects of a D2–M2 event...poorly exposed and contains muscovite– biotite–quartz schist. The lower limit of Zone 2 is defined by...lowP/high-T metamorphism. The limited mafic rocks in the area are themselves metamorphosed, and the northern granite |  | | Journal (article/letter/editorial) | | au) 2 Department of Applied Geology, University of New South Wales, NSW 2052, Australia ABSTRACT The Albany–Fraser...Australo-Antarctic cratonic assembly during the Mesoproterozoic. New petrologic and thermobarometric data from the Coramup...metamorphism and D2 deformation. In a companion paper, new structural and U–Pb SHRIMP zircon data are presented...BODORKOS & D. J. CLARK (a) (b) ALBANY–FRASER OROGEN Quartz-rich metasedimentary rocks (undifferentiated) ...Coramup Gneiss (i.e. the Butty Head– Butty Harbour area; Fig. 3b,c), and comprise NE-trending, subvertical |  | | Report (chapter) | | of CPOs have been performed on minerals such as quartz, olivine and calcite (e.g. Wenk 1985 and references...was collected south of the Tummeralik area, SE of Nuuk, an area mapped during the 2006 GEUS (Geological...Greenland) mapping campaign, (Fig. 1). The Tummeralik area consists dominantly of tonalitic to granodioritic...significant part of the supracrustal units of the area (UTM zone 22 (E 551448, N 7117040)). The unit is...sillimanite needles and alignment of feldspar and quartz aggregates. Both foliation and lineation are parallel |  | | Journal (article/letter/editorial) | | chiastolitic andalusite, cordierite, biotite and quartz¡garnet crystallized in most rocks and equilibrated...e– K-feldspar–quartz, sillimanite–cordierite–K-feldspar–quartz and spectacular quartz-undersaturated...cordierite (in general 40–70%), plagioclase, biotite and quartz. Ilmenite is always present, and graphite is generally...grains up to 2 mm in diameter. Small inclusions of quartz, ilmenite and sometimes plagioclase, biotite and...rare isolated grains are present in some sections. Quartz crystals are relatively large (up to 1 mm, usually |  | | Journal (article/letter/editorial) | | chiastolitic andalusite, cordierite, biotite and quartz¡garnet crystallized in most rocks and equilibrated...e– K-feldspar–quartz, sillimanite–cordierite–K-feldspar–quartz and spectacular quartz-undersaturated...cordierite (in general 40–70%), plagioclase, biotite and quartz. Ilmenite is always present, and graphite is generally...grains up to 2 mm in diameter. Small inclusions of quartz, ilmenite and sometimes plagioclase, biotite and...rare isolated grains are present in some sections. Quartz crystals are relatively large (up to 1 mm, usually |  | | Journal (article/letter/editorial) | | 21218, USA R. P. WINTSCH Department of Geology, Indiana University, Bloomington, IN 47405, USA ABSTRACT...syntectonic myrmekitic intergrowths of oligoclase and quartz formed on the two sides of &feldspar grains that...The replacement of K-feldspar by plagioclase and quartz results in a volume decrease and is favoured on...K-feldspar by mytinekite, a plagioclase-vermicular quartz symplectite, was considered first by Futterer (1894)...and then only on selected minerals. Nucleation of new grains may lower the free energy of mica by a combination |  | | Journal (article/letter/editorial) | | facies metapelites have produced migmatites with quartz-absent sillimanite-spinel-cordierite melanosomes...contain garnet±orthopyroxene±cordierite±biotite±quartz assemblages. Reaction textures in the Deep Bore...during amphibolite facies metamorphism. Deep Bore Quartz norite 2 FIELD RELATIONS Cackleberry Metamorphics...Metamorphics (Shaw et al., 1984) crop out in a c. 334 km area, c. 20 km 742 I . SC R I M G E O U R E T A L...Metamorphics, with a light coloured leucosome comprising quartz and K-feldspar, and darker restitic melanosome |  | Miyake, Akira, Hirukawa, Takanobu, Sato, Maki, Taguchi, Tomoki, Suzuki, Kazuhiro, Nakai, Yutaka (2016) Large thermal aureole around the Inagawa Granodiorite in the southeastern area of Asuke, Aichi Prefecture. The Journal of the Geological Society of Japan, 122 (5) 173-191 doi:10.5575/geosoc.2016.0008 | Journal (article/letter/editorial) | | around the Inagawa Granodiorite in the southeastern area of Asuke, Aichi Prefecture Abstract 三宅 明＊ 蛭川孝信＊＊†...and consists of four distinct intrusive units. A new CHIME monazite age of 83.3 ± 1.3 Ma for the third...belt in the Mikawa area showing the locations of the study area and the Dando-san area (simplified after...Ryoke metamorphic belt in the southeastern Asuke area showing foliation in metamorphic rocks. した．また，新たに伊奈川花崗閃緑岩の...paleosome. (f) Photomicrograph of cordierite with round quartz and biotite inclusions in migmatite (cross-polarized |  | | 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... MINERAL-FLUID EQUILIBRIA 67 69 70 ve 13 81 86 88 92 Quartz-H20 Calcite-H20 Graphite-H2O Graphitic pelitic...covite Staurolite-cordierite-muscovite Kyanite Quartz-absent assemblages Corundum Spinel Hypersthene...of dihedral angle measurements Experiments with quartz Experiments with calcite Results with other minerals |  | | Book | | 955 Massachusetts Avenue, Cambridge, Mass. 02139, USA ' Allen & Unwin (Australia) Ltd, 8 Napier Street...North Sydney, NSW 2060, Australia Allen & Unwin (New Zealand) Ltd in association with the Port Nicholson...Compusales Building, 75 Ghuznee Street, Wellington I, New Zealand First published in 1990 British Library...University Press. Preface This second volume in the new series produced by the Mineralogical Society is concerned...interaction in the north-west Adirondack Mountains, New York State Ian Cartwright & John W. Valley 8. l Introduction |
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