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| - 3), AUSTRALIA warps REE % BMR Bulletin spate aeeiemnnnent D. H. Blake Spee 8 gh on TAT ...BUREAU OF MINERAL OF RESOURCES AND ENERGY RESOURCES, GEOLOGY AND GEOPHYSICS Geology of the Mount Isa...Isa Inlier and environs, Queensland and Northern Territory D. H. BLAKE AUSTRALIAN GOVERNMENT CANBERRA...SECRETARY: BUREAU OF RESOURCES ENERGY SENATOR THE HON. GARETH EVANS G. C. EVANS OF MINERAL DIRECTOR:...GEOPHYSICS R. W. R. RUTLAND Published for the Bureau of Mineral Resources, Geology and Geophysics by the |
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| Springer-Verlag 1981 Geobarometry and Geothermometry of Plagioclase-Biotite-Garnet-Muscovite Assemblages...and Mavis Z. Stout Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N...(1) and (2). Using a linear least squares analysis of activity products and estimated P - T from natural...constant equations for (1) and (2). Combining either of these equations with that for M g - F e exchange...from Ferry and Spear (1978) allows estimation of P and T of metamorphism. Pressures estimated from these |
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| PREFACE The end of 1994 marked the close of the first quarter-century of publication of the Mineralogical...helping to build one of the single most valuable and authoritative published archives of data for the mineral...problems, however. With each passing year the sum of knowledge contained in the back issues has grown...early on that, were this problem of access not relieved, the sheer bulk of data would eventually compromise...compromise its own reference value. In 1980, at the urging of Pete J. Dunn, we initiated a feasibility study for |
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| Peacor University of Michigan Ann Arbor, Ml George W. Robinson Natl. Museums of Canada Ottawa, Ontario...Rosenzweig Tampa, FL Richard W. Thomssen Carson City, NV Associate Photographers Nelly Bariand Sorbonne...Carson City, NV 89701 702-883-2598 Bookstore Mariiee Chirila 1601 Fairview Dr., Suite C Carson City, NV...collection of the Australian Museum .......................377 by F. L. Sutherland & G. Webb Minerals of western...Sutherland Minerals of the Moonta and Wallaroo mining districts, South Australia ................... |
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| Occurrence Of Monazite GEOLOGICAL SURVEY PROFESSIONAL PAPER 530 The Geologic Occurrence Of Monazite...SURVEY PROFESSIONAL PAPER 530 of the distribution of monazite and of the geologic A review controls...controls affecting the amount of thorium in monazite UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...WASHINGTON 1967 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William...Director Library of Congress catalog-card No. GS 67-191 For sale by the Superintendent of Documents, U.S |
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| and their Ternary excesspropefties of grossular-pyrope-almandine influence in geothermobarometry R. G...Survey of Canada, 601 Booth Street,Ottawa, Ontario KIA 088, Canada A. M. Kozror* Department of GeophysicalSciences...GeophysicalSciences,University of Chicago, 5734 South Ellis Avenue, Chicago,Illinois 60637, U.S.A. Ansrucr...reversedphaseequilibrium data of Koziol and Newton (1989) involving grossular (Gr)-pyrope (Py)-almandine (Alm) solid solutions...conjunction with standard statethermodynamic data of Berman (1988) in order to constrain ternary mixing |
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| Mineralogist Vol. 38, pp. 511-524 (2000) GENESIS OF CORDIERITE – GEDRITE GNEISSES, CENTRAL METASEDIMENTARY...AND JOHN W. VALLEY Department of Geology and Geophysics, University of Wisconsin, 1215 West Dayton Street...gedrite-bearing lithologies crop out along the base of the Central Metasedimentary Belt boundary thrust...metamorphism of either soils or pelitic sediments, and cannot be explained solely by extraction of partial...rocks. The whole-rock d18O and chemical composition of cordierite–gedrite rocks in the CMBbtz indicate that |
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| and Mavis Z. Stout Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N...activity of TiO 2 can be precisely defined as a function of pressure, temperature and activities of other...equilibria: 1) 3 ilmenite + A12SIO5 + 2 quartz = almandine + 3 TiO 2 2) anorthite + 2 sphene = grossular...pressure limits of some metapelites and metabasites. When electron microprobe analyses of mineral grains...agreement with other geobarometers. The activity of TiO 2 in many metapelites is very near rutile saturation |
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| 19n THE JOURNA_L OF GEMMOLOGY and PROCEEDINGS OF THE GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN GEMMOLOGICAL...GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN SAINT DUNSTAN'S HOUSE, CAREY LANE LONDON, EC2V 8AB GEMMOLOGICAL... GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN ( Onginally founded in 1908 as the Education Committee of the National...Affiliated Associations: Genu:nological Association of Australia: Canadian Genu:nological Association: Rhodesian... THE JOURNAL OF GEMMOLOGY A N D P R O C E E D I N G S OF THE GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN |
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| Springer-Verlag1989 Reversed experimental calibration of the garnet-clinopyroxene F e - M g exchange thermometer...R.C. N e w t o n Department of the Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue...pyrope hedenbergite = 1/3 Fe3A12Si3012 + CaMgSizO6 almandine diopside has been investigated experimentally...700~ ~ C, with 59 reversals and 6 half reversals of the equilibrium clinopyroxene compositions from synthetic...solutions. The effect of Ca in garnet was investigated with grossular mole fractions of 0.2, 0.25, 0.3, 0 |
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| P-T CONDITIONS OF GARNET GROWTH WITH ISOCHEMICAL PHASE-DIAGRAM SECTIONS AND THE PROBLEM OF EFFECTIVE BULK-COMPOSITION...AND EDWARD D. GHENT Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N...portray the theoretical equilibrium distribution of mineral assemblages and mineral compositions for...sections to derive the P–T conditions of garnet growth requires knowledge of the effective bulk-composition...composition available to the reacting assemblage of phases. Isochemical sections for a Canadian Cordillera |
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| Mineral Locality Index Downloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015 K NOWN...representation of mining tools clearly proclaim Montana’s mining origins. Montana’s production of copper, coal...gemstones: agate and sapphire. An extensive body of gem and mineral literature has been published describing...describing the occurrence, collecting, mining, and cutting of the two state gemstones. Figure 2. Granville Stuart...established Montana’s first mining camp at Gold Creek in 1860. Geologic Provinces The state can be divided |
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| composition during amphibolite facies metamorphism of graphitic metapelites, Howard Ridge, British Columbia...N D E. D . GHENT Department of Geology and Geophysics, The University of Calgary, Calgary, Alberta T2N...thermobarometric calculations indicate that P-T conditions of 616625"C and 6.7kbar were reached during metamorphism...estimates of X in the metamorphic fluid using different paragonite solution models. Estimates -9 of X H f...f lrange from a maxlmum of 0.93 (Eugster et al., 1972) to a minimum of 0.29 (Chatterjee & Flux, 1986) |
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| London, Special Publications The current status of thermobarometry in metamorphic rocks E. J. Essene...click here to seek permission to re-use all or part of this article Subscribe click here to subscribe...Lyell Collection Notes © The Geological Society of London 2014 Downloaded from http://sp.lyellcollection...Mason University on June 25, 2014 The current status of thermobarometry in metamorphic rocks E. J. Essene...pressure (P) and temperature (T) is a fundamental aspect of research on metamorphic terrains. Unfortunately, |
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| L. Ya Aranovich 9 D. R. M. Pattison Reassessment of the garnet-clinopyroxeneFe-Mgexchange thermometer:...thermometer has been re-evaluated through analysis of phase equilibrium experiments defining the Fe-Mg...are mutually compatible if the heterogeneity range of Grt and Cpx in run products previously obtained by...equilibrium studies. Application of the newly calibrated thermometer to a number of amphibolite to granulite...temperature estimates. Introduction This paper is Part II of a two-part study on the garnet (Grt)-clinopyroxene |
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| AND MAVIS Z. STOUT Department of Geology and Geophysics, University of Calgary, Calgary, Alberta T2N...T2N 1N4, Canada ABSTRACT Pods and lenses of leucoamphibolite a few meters in maximum dimension contain...Precambrian clastic metasedimentary rocks of the Esplanade Range of southeastern British Columbia, and range...Mineral equilibria using the database of Berman provide estimates of metamorphic pressure (P), temperature...580°C at 7 kbar. The lack of kyanite in leucoamphibolites suggests a maximum P of about 7–8 kbar. Pl–Qtz–Ep–Grt |
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| t a t e d Bibliographies of Mineral Deposits in Africa, Asia (exclusive of t h e U S S R ) a n d Australasia...DREW RIDGE The Pennsylvania State University College of Earth and Mineral Sciences University Park, Pennsylvania...CANADA Pergamon of Canada Ltd., 207 Queen's Quay West, Toronto 1, Canada AUSTRALIA Pergamon Press (Aust...Boundary Street, Rushcutters Bay, N.S.W. 2011, Australia FRANCE Pergamon Press S A R L , 24 rue des Ecoles...1976 John Drew Ridge All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval |
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| Three-dimensional quantitative textural analysis of metamorphic rocks using high-resolution computed...W. D. C AR L S ON † Department of Geological Sciences, University of Texas at Austin, Austin Texas 78712...the dominant mechanisms governing crystallization of garnet porphyroblasts in rocks from diverse regional...compositional zoning patterns of porphyroblasts indicate the dominance of diffusion-controlled nucleation...studied: a suite of semi-pelitic rocks from the Picuris Mountains, New Mexico (USA); a suite of mafic samples |
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| paragneiss. The paragneisses show strong evidence of penetrative folding and microfracturing and were...relatively 'dry' and free of penetrative deformation during the latter stages of metamorphism and thus were...minimum pressures near 12 kb at 550 °C. Remnants of more jadeite-rich pyroxenes in paragneisses (jd J0...suggest even higher pressure. The stable coexistence of chloritoidalmandine-quartz in paragneisses suggests...this assemblage. The widespread stable occurrence of sphene suggests relatively low ftX)2 during metamorphism |
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| pages 9–13, 2000 Application of INVEQ to the geothermobarometry of metamorphic rocks near a kyanitesillimanite...isograd, Mica Creek, British Columbia Edwar d D. Ghent * and Ter enc e M. Go r do n DEPARTMENT OF GEOLOGY...GEOLOGY AND GEOPHYSICS, UNIVERSITY OF CALGARY, CALGARY, AB T2N 1N4 CANADA ABSTRACT A kyanite-sillimanite...kyanite-sillimanite isograd is well-exposed in the Mica Creek area, British Columbia, and both pelitic and basic rocks occur...occur within a few hundred meters of the isograd. This provides us with an opportunity to test geothermobarometry |
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| GALAND E. D. GHENT Department of Geology and Geophysics, University of Calgary, Calgary, Alta., Canada...use only. Revision accepted July 25, 1990 Rocks of the Solitude Range, British Columbia, have been metamorphosed...chloritoid-chorite-zone to kyanite-zone conditions. The grade of metamorphism increases southwestward toward the Rocky...Pelitic (Mahto Formation) and calc-pelitic (Tsar Creek unit) rocks contain assemblages that reflect the...increase in metamorphic grade. Physical conditions of metamorphism are estimated to be approximately 450-540°C |
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| : CarAlrSisO', + 2AlrSiOu + SiO2, the logarithm of the - 3XEl"^5',".;b?9 Log Ko varies apparent distribution...geothermometers or geobarometers.The degreeof non-ideality of grbssular solid solution in garnet can be estimated...indicators of metamorphic grade. Other workers have noted a relationship between the CaO content of garnet...garnet, the anorthite content of plagioclase,and metamorphic grade (Kepezhinskas,1973).Unless an appropriate...appropriate mineral assemblage of low variance is chosen, however, the effectsof bulk composition far overshadow |
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| This book is respectfully dedicated to the memory of Dr. John Sinkankas for his kind initiative and support...phorographed specimens are fivm the collectio11s of both authors as ire!/ as from many other collections...Te~in 14/02/03/0 I All rights reserved•• ·o pan of thh. work may be reproduced by any mechanical. photographic...photographic, or electronic process, or in the fonn of a phonogrciphicrecording. nor may it be ,torcd in...public or private U<,e. without written penni,,ion of the publi,her. ISBN 80-7296-039-3 CONTENTS Preface |
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| Staurolite producing reactions and geothermobarometry of a high pressure thermal aureole in the French Massif...pelitic metasedimentary rocks are developed as a result of thermal metamorphism around syntectonic granitoids...evidence of two staurolite forming reactions in the presence of plagioclase and the absence of chlorite...is retrograde. The topology of these reactions is illustrated in terms of end member compositions for...text andfigures a =anatase a b =albite alm = almandine an = anorthite ann = annite b = brookite bi =biotite |
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| standardentropy and high-temperatureheat capacity of synthetic almandine,Fe3Al2Si3O12, experimentalhigh-T, high-Pdaa...this laboratory.The standardenthalpyof formation of almandinewascalculatedfrom recenthigh-pressureexperimentaldataon...bufferedat hematiie-magnetiteoxygenfugacity, making use of the derivedheatcapacitycoefficientsofalmandine.The...morenegativethangivenby acid solutioncalorimetry, of oxygenfugacity on but supportsthe revision ofAnoitz...reactionsresponsiblefor the formationof ilmenite. Keywords;almandine,entropy,thermodynamicdatasets,equilibria. Sonaruerns |
