 | | Journal (article/letter/editorial) | | earlier data. The published dickite and the 2Mr muscovite structures are then critically reviewed, and satisfactory...for the structures of vermiculite, dickite and muscovite, but scarcely for any other relevant structures...o-H (3) Bonds increase in compliance (see Megaw, Kempster and Radoslovich, 1962) from Si-O, through Alrv-O...T-O-T (T:tetrahedral cation), as shown by Megaw, Kempster and Radoslovich than o-T-o (1962). (5) Mutual...felspar structures confirms this (e.g. Megaw, Kempster and Radoslovich,1962).In six felspar structures |  | Dostal, Jaroslav, Keppie, Duncan J., Jutras, Pierre, Miller, Brent V., Murphy, Brendan J. (2006) Evidence for the granulite–granite connection: Penecontemporaneous high-grade metamorphism, granitic magmatism and core complex development in the Liscomb Complex, Nova Scotia, Canada. Lithos, 86 (1) 77-90 doi:10.1016/j.lithos.2005.04.002 | Journal (article/letter/editorial) | | A&M University, College Station, Texas 77843-3115, USA d Department of Earth Sciences, St. Francis Xavier...The insert displays eastern Canada, northeastern USA, and the location of the map. It also shows the lithotectonic...amphibole (gneisses), 373 F 4 to 367 F 3 Ma in muscovite (gneisses and granites), and 385 to 367 Ma in...gneiss (quartz–K-feldspar–plagioclase– biotite–muscovite–sillimanite) through hornblende– biotite gneiss...gneiss (quartz– K-feldspar–plagioclase–biotite–muscovite–sillimanite– garnet) and sillimanite schist ( |  | | Journal (article/letter/editorial) | | Department of Geology, University of Wisconsin, Madison 6, Wisconsin, U . S . A . (Received 6 June 1962...with isolated tetrahedra. At the University of Wisconsin, S. W. Bailey was finding t h a t the Si, A1-O...the same Si : A1 ratio. At the same time, Megaw, Kempster & Radoslovich (1962) were finding that the Si-O...746 1.7h6 1.752 1.752 1.753 1.758 1.681 Hegaw, Kempster and Radosiov[ch (19621 0.003 1.622 1.622 Fischer...654 Radoslov[ch (1960) Values recalculated muscovite e 1.617 "1.614 1.733 1.732 1.621 t.622 1.734 |  | | Journal (article/letter/editorial) | | ~ ¼ and c ~ ¾ are no longer equivalent (e.g., Kempster et al. 1962; Wenk and Kroll 1984). Cell parameters...Their sample was a natural low albite from Amelia County, Virginia, with Al almost exclusively occupying...gypsum, 0–3.64 km/s for biotite, and 0.3–2.44 for muscovite. An elastic anisotropy index, A= 2 vP vP vP...hornblende = 0.33, gypsum = 0.36, biotite = 0.64, muscovite = 0.55, plagioclase is very anisotropic, and thus...transformations in silica. Physical Review B, 55, 3465. Kempster, C.J.E., Megaw, H.D., and Radoslovich, E.W. (1962) |  | | Journal (article/letter/editorial) | | concordant ages were obtained for amphibole, muscovite, and biotite, thus indicating rapid cooling of...evidence of later deformation. A 376 Ma 40Ar/39Ar muscovite age (Hicks et al., 1999) for mica extracted from...rocks and gabbroic bodies (e.g., Liscomb area) Kempster et al. (1989) Kontak and Reynolds (1994) Gold... 40 Moose River 375 Ma 40 Average of two muscovite samples Kontak et al. (1990a) West Gore 370...Abbreviations: bt = biotite, hbl = hornblende, ms = muscovite, mz = monazite, wr = whole rock, zr = zircon; |  | | Journal (article/letter/editorial) | | Clarkeet al., 1993b)andminorgabbroie material(Kempster Thedeposits canbebroadly grouped depending onwhether...Megtunaterrane areconsistently (e.g.,biotite,muscovite, feldspar, amphibole, garnet, and accordingly...1991;Chatterjeeet al., 1992), beendated veinminerals(biotite,muscovite, hornblende; suggesting therdbrethatat onetimethe...usingtheGeological we have 15cm)___ chlorite+ muscovite; thelattertwomorphologicalby E.R. FaribaultandH...chl= chlorite, gal= galena, ilm = ilmenite; ms= muscovite, plag= plagioclase, po = pyrrhotite, py = pyrite |  | | Journal (article/letter/editorial) | | 1990). These dykes, emplaced at around 370 Ma (Kempster et al. 1989), are a potentially important part...aluminosilicates, corondum, ruffle, chlorite, muscovite, and (in A3 only) epidote and titanite. Group...lamprophyre dykes similar to the Tangier dyke (Kempster et al. 1989), and the approximate age of the peak...Tangier dyke and the Musquodoboit batholith (MB) (Kempster etal. 1989; MacDonald and Clarke 1985) suggests...Wedepohl KH (eds) Geol Soc Spec Publ 24:147-159 Kempster RMF, Clarke DB, Reynolds PH, Chatterjee AK (1989) |  | | Journal (article/letter/editorial) | | involving Cs, Rb, and Na between aqueous fluid and muscovite at 1 kbar in the temperature range 400*-600"....range 40-60 ppm Cs and 100-200 ppm Na in the muscovite (Fig. 3). The data shown in this figure have been...to weight proportions of the trace element in muscovite. IIYAMA and VOLFINGER (19761, in replotting these...these data as (Cs/K)fluid versus (Cs/K)muscovite, suggested that the curves may have an S-shape such as...Figure 3. Comparison of Cs, Rb, and Na contents of muscovite as a function of compound partition coefficient |  | | Journal (article/letter/editorial) | | assemblage succeeded by aquartzcalcite-chlorite-muscovite-albite (_ anatase) stage.Sulfides(includingBi-Te-Agsulfides)...biotiteandmuscovite fromthe River Lakeintrusion;(2) muscovite froma pegmatitespatiallyrelatedto the RiverLakeintrusion...sm,toorthoclase _ microclineperthitc,biotite,muscovite, getherwith extremeflatteningof mineralporphyrorare...mpsonand White, 1974) basedon the presenceof muscovite, Schmid,1983; Hanmer and Passchier,1991) consisinferredto...anandalusite crystalwhichisalteredalongitsmargins to muscovite (barscale= 0.6 mm).E. Photomicrograph (crossed |  | | Journal (article/letter/editorial) | | ORDER-DISORDER IN SILICATE MINERALS 3 17 on muscovite in which the AI, Si distribution in the tetrahedral...structure of 14 A primitive anorthite (Megaw, Kempster & Radoslovich 56); the subcells form domains,...E. W. 1 964. Crystal structures of coexisting muscovite and paragonite. Carnegie Inst. Washington Yearb... Gatineaux, L. 1 964. Structure n!elle de la muscovite. Repartition des substitu tions isomorphes. Bull...Geol. Tidsskr. 42(2) : 1 04-37 56. Megaw, H. D., Kempster, C. J. E., Radoslovich, E. W. 1 962. The structure |  | | Journal (article/letter/editorial) | | 94720-4767, USA 2. Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA 3. Chemical... 7000 East Avenue (L-231), Livermore, CA 94550, USA * Corresponding author. Email addresses: mtremblay@berkeley...separated by antiphase boundaries, as well large muscovite inclusions, plagioclase subgrains, and Na-rich...thermochronology. Chem. Geol. 186, 333–344. Megaw H. D., Kempster C. J. E. and Radoslovich E. W. (1962) The structure...pegmatite, Benson Mines, NY USA Rhyolitic ignimbrite, Fish Canyon Tuff, CO USA Rhyolitic ash, Gulf of Salerno |  | | Book | | containing predominantly particles of clinozoisite and muscovite, minerals that are not otherwise encountered in...phenocryst, An6?Ab320ri is found in basalt in Lake County, Oregon. The excellent quality of the crystals...associated minerals in some schists from Vermont, USA, and South Westland, New Zealand, with inferences...Physical properties of calcic labradorite from Lake County, Oregon. Am. Mineralogist, 51, 177. Sugi, K. (1940)...Sorum and Taylor (1951) Kempster, Megaw and Radoslovich (1962) Megaw, Kempster and Radoslovich (1962) |  | | Journal (article/letter/editorial) | | 94720-4767, USA Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA Received 31 May...Laboratory, 7000 East Avenue, Livermore, CA 94550, USA. E-mail addresses: cassata2@llnl.gov (W.S. Cassata)...pegmatite in Benson Mines near Star Lake, New York, USA (Foland, 1974). Benson Mines orthoclase was described...Crater (ECC) in Lunar Craters Volcanic Field, Nevada, USA (Righter and Carmichael, 1993). ECC anorthoclase...massive rhyolitic ignimbrite in southwestern Colorado, USA (Lipman, 2000). GSs is a sanidine (An3.7Ab30.5Or65 |  | | Journal (article/letter/editorial) | | alternation of Al-rich and Si-rich tetrahedra (Megaw, Kempster and Radoslovich, 1962) because the T-O-T angles...microcline or low albite. However, one excdption is 3I muscovite (Giiven and Burnham, 1967) where partial ordering |  | | Journal (article/letter/editorial) | | (a) Includes Na- and K-micas paragonite and muscovite; M = K or Na; M2 in phengites is partially filled...should not be forgotten though. For instance, muscovite KAl,(AlSi,O,,)(OH), is found in several structural...for instance, that lM muscovite or monalbite have different Sci than 2M 1 muscovite or analbite, respectively...36-48. G.(1959) Rinaldi Louisnathan Acta T. Kempster 56, Centr.Mineral. 1017-1035. A., P.B. Acta...added in their calculations to the entropies of muscovite and paragonite). 4. Isotopic promiscuity provides |  | | Book (volume) | | Fleet, Dr P. Gay, Dr J. B. Jones, Dr C. J. E. Kempster, Dr E. W. Radoslovich, Dr P. H. Ribbe and—above...mica-like minerals are: Tale Mg3(Si,O19)(OH)2 Muscovite KAI,(AISi;0;))(OH). Phlogopite KMg;,(AISi;0,.)(OH)... Burdick and J. H. Ellis, Proc. Nat. Acad. Sci. USA., 3, 644 (1917) 2L. Pauling and L. O. Brockway, Zeits...Al,(Si,0,.)(OH), Mg,(Si,O19)(OH)2 Mica Group Muscovite Paragonite Phlogopite Biotite Lepidolite Zinnwaldite...These vertices are cross-linked by Al atoms in muscovite, or by Mg and Fe atoms in phlogopite and biotite |  | | Book | | of Chicago 5734 S. Ellis Avenue Chicago IL 60637 USA Dr. WILLIAM L. BROWN CRPG Centre National de la Recherche...distances for a structure analysis of anorthite (Kempster et al. 1962; Megaw et al. 1962) and celsian (Newnham...identified from Table 3.1 50 Order-Disorder The Lake County labradorite with a, b, c and e diffractions is...of primitive anorthite. Atomic coordinates from Kempster et al. (1962), and distances from Kalus (1978)...Or51Ab4SAnl' from Rabb Canyon pegmatite, Grant County, New Mexico (Keefer and G E Brown 1978) for which |  | | Book | | TAYLOR(1953), MEGAW(1959), CHANDRASEKHAR et al. (1961), KEMPSTER et al. (1962), MEGAWet af. (1962), and others...Chlorite Quartz' Beryl Stilpnomelane Calcite Muscovite Biotite Prehnite Dolomite ~ ~~ I .95-2.10 2...Shelby, N.C. EMMONS (1953), no.10 diorite, Fresno County, Calif. EMMONS (1953), no.] I anorthosite, Tigerton...basalt porphyry, Lake County, Oreg. EMMONS (1953), no.19 gabbro, Lincoln County, Wisc. EMMONS (1953),...(1956), 103086 pegmatite, Little Rock Creek, Mitchel County, N.C. J. V. SMITH (1956), 97490 gneissoid granodiorite |  | | Book | | TAKEOVER GENETIC ORIGINS OF LIFE MINERAL ALLEN FORT COUNTY WAYNE, PUBLIC LIBRARY INDIANA 46802 You may...any agency, branch, or bookmobile of the Allen County Public Library. veENCo in 2017 Genetic takeover...CB2 1RP 32 East 57th Street, New York, NY 10022, USA 296 Beaconsfield Parade, Middle Park, Melbourne 3206...and are known in greater detail, for example muscovite. In other cases, the mineral may be of interest...berthierine cronstedtite 21 c D pyrophyllite muscovite margarite talc mica phlogopite mica biotite |  | | Report (volume) | | P4/m(83) 2 4 orth. 4 Sheet structure silicates Muscovite KAb[AlSb010](0H)2* mon. C2/c(15) 2M2 mica ...79, 108 Sheet structure silicates ........] Muscovite KAlz[AISi:JOlo](OH)z* 398.313 4 mon Paragonite...W ., 1964, Crystal structures of coexisting, muscovite and paragonite: Carnegie Inst. Washington, Geophys...Oral Biology, v. 10, p. 421-431. Megaw, H. D., Kempster, C. J. E., and Radoslovich, E. W., 1962, The structure |  | | Book (volume) | | perthite, pegmatite, S. of Iron Creek, Pennington County, Black Hills, S. Dakota (Higazy, 1949). Anal. R...orthoclase (and kalsilite) by the interaction of muscovite, silica, and KOH in aqueous solution under pressure...about 350°C. if A1 is rather high and K is low; muscovite forms from as low a temperature as 200°C. and...potassium felspar re¬ maining had a white coating of muscovite and boehmite, and further boehmite was found in...KAl3Si3Oio(OH)2 + Si02 -> KAlSi308 + Al2Si05 + H20 muscovite (4) orthoclase sillimanite KAl3Si3Oi0(OH)2 |  | | Book | | Kongsberg, Norway, as well as Magnet Cove (Arkansas, USA), Illimaussaq (Greenland) and Kola Peninsula (Russia)...metamorphic schists, particularly at Amelia, Virigina, USA and Bourg d’Oisans and Isère, France. The occurrence...locations, notably the West Indies, central and southern USA and Asia. Although widely known for medicinal properties...deposits are known from south-east Asia, Mexico, USA, Canada, Romania, Germany and a few localities in...albite-anorthite (q.v.) plagioclase feldspar series (Kempster et al., 1962). Anorthite occurs in many igneous |  | | Book (edition) | | Corporate Drive, Suite 400, Burlington, MA 01803, USA Copyright © 2008 Nicholas Eastaugh, Valentine Walsh...Kongsberg, Norway, as well as Magnet Cove (Arkansas, USA), Illimaussaq (Greenland) and Kola Peninsula (Russia)...metamorphic schists, particularly at Amelia, Virigina, USA and Bourg d’Oisans and Isère, France. The occurrence...locations, notably the West Indies, central and southern USA and Asia. Although widely known for medicinal properties...deposits are known from south-east Asia, Mexico, USA, Canada, Romania, Germany and a few localities in |  | | Book | | high albite from the Rabb Canyon pegmatite, Grant County, New Mexico, U.S.A., gave NOr =0.65. Keefer and...(l984a) by dry heating a low microcline from Bedford County pegmatite district, Virginia, U.S.A. to 1050 °C...on amazonite from Pikes Peak batholith, Colorado, USA. Bull Mineral 107: 411-422 Blasi A, De Pol Blasi...metamorphism of hypersolvus granite, Rhode Island, USA. Contrib Mineral Petrol 72: 353-365 De Pieri R (1979)...and Chemistry of Minerals 14 : 281-292 Megaw HD, Kempster CJE, Radoslovich EW (1962) The structure of anorthite |  | | Report (volume) | | Black-clouded feldspars 279 SUNSTONES FROM LAKE COUNTY, OREGON 279 CHAPTER J.V. SMITH 12. SOME CHEMICAL...specimen (A~Lt-o) has a supe r La t t Lce repeat "usA less than the lower portion (An"u50)' A super lattice...Australia Grew (1979) Kilbourne Hole, New Mexico, USA Hiss (1979)* Central Alps, Switzerland Raase &. Morteani...(1977) Andrew's Point, Cape Ann, Massachusetts, USA GRANODIORITE Eggleton (1979) GRANULITE Hormann...SE Australia Iralojoki - Inar ijaervi, Finland USA, various localities ,'\·\incruJ. Ccoktum. Sudbury |
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