 | | Journal (article/letter/editorial) | | com/locate/gca Thorite in an Apollo 12 granite fragment and age determination using the electron microprobe...and Planetary Sciences and McDonnell Center for the Space Sciences, Washington University, 1 Brookings...We present the ļ¬rst quantitative compositional analysis of thorite in a lunar sample. The sample, a granitic...determine reliably with the electron microprobe. The assemblage represents the ļ¬rst documented occurrence...three minerals together and only the second reported occurrence of thorite in a lunar rock. Sample 12023 |  | | Report (volume) | | TRITES, JR., and EDWIN W. TOOKER CONTRIBUTIONS TO THE GEOLOGY OF URANIUM GEOLOGICAL SURVEY BULLETIN...on behalf of the U. S. Atomic Energy Commission and is published with the permission of the Commission...WASHINGTON : 1953 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY...SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing...minerals_____--____________.-____--___-______ Thorite-_._______________________ Hydrothorite (?)____ |  | | Journal (article/letter/editorial) | | indefinite length of time, and as long as it lasts, the These interesting results, of course, must firmed...telegraphy. the forests grew. This lightwood will keep for an needs of the world for the commodities...under discusĀ sion will be supplied. Throughout the Southern States, there is just springing up a new...101'11)(;<[ of two plates, on the lower of which is placed the test subĀ stance. The second mineral, orangite...variety of thorite. It always accompanies the latter, and it is also found industry -that of the extraction |  | Gullikson, Amber L., Hagerty, Justin J., Reid, Mary R., Rapp, Jennifer F., Draper, David S. (2016) Silicic lunar volcanism: Testing the crustal melting model. American Mineralogist, 101 (10) 2312-2321 doi:10.2138/am-2016-5619 | Journal (article/letter/editorial) | | 2312ā2321, 2016 Silicic lunar volcanism: Testing the crustal melting model Amber L. Gullikson1,*, Justin...brought to Earth by the Apollo missions, followed by the discovery of silicic domes on the lunar surface through...lithologies are thought to make up a small portion of the lunar crust, their presence indicates that lunar...currently used to describe the formation of silicic lithologies on the Moon include in situ differentiation...silicate liquid immiscibility, and partial melting of the crust. This study focuses on testing a crustal melting |  | | Journal (article/letter/editorial) | | Marlboro, Massachusetts, that this place was the last of the rockers' havens. We were prepared to see crystals...beauty and dimensions, but we were not prepared for the comparatively easy footwork involved at each collecting...take, however, and, with the friendly assistance of Harley and Shelagh Leach of the Kingston, Ontario Mineral...zircon and tourmaline. This August we returned to the same area and this time had as companions Mr. Dino...Connecticut and Mr. Al Gauvreau of Woburn, Massachusetts. The Leaches were very hospitable and gave us lodging |  | | Journal (article/letter/editorial) | | Vice-President, in the Chair. The donations to the Library since the previous meeting were announced, and the thanks...thanks of the Association accorded to the various donors. On the motion of D,Ā·. Henry Woodward, F.R.S., seconded...resolved that the Secretary be requested to convey to the President and Mrs. Holmes, on behalf of the Members...late sad bereavement. The meeting was then resolved into a oouversazionc, at which the following objects...W. J. LEWIS ABBOTT, F.G.S.-Eocene Mollusca from the Paris Basin. By F. W. AMSDEN-Photographs of Switzerland |  | | Journal (article/letter/editorial) | | thrown on to the tin window so that its diametpr just that can be made on glass. The orbits of the planets...planets overlaps the inner diameter of the annulus, and then can be marked by fine needle holes placed close...close by the interposition of a mixture of aniline violet with tOgether.-Amateur Photographer. a little aniline...aniline green all the rays, except the red hydroĀ gen ray, are absorbed, and the prominences are seen...NICKEL, * red light with the chromosphere, and the whole of them round the sun at any given time are |  | | Journal (article/letter/editorial) | | homepage: http://www.tandfonline.com/loi/tigr20 Moon rock mineralogy V. L. Barsukov , M. A. Nazarav &...Barsukov , M. A. Nazarav & L. S. Tarasov (1982) Moon rock mineralogy, International Geology Review, 24:2...13:40 Moon rock mineralogy V.L. Borsukov, M.A. Nozorov, ond L.S. Torosov is restricted to the range...parts of the hloon (Vinogradov, 1975; Schmitt, 1975; Florenskiy et al., 1977). Nevertheless, the material...various laboratories throughout the world is reasonably representative, and the data can be combined with orbital |  | | Journal (article/letter/editorial) | | by macro-microanalyses of the samples and remote-sensing observations on the celestial bodies. Because...its appearance is variable depending on the occurrence of the lunar and martian rocks. In other words...silica polymorphs provide valuable information on the igneous process (e.g., crystallization temperature...summarizing the representative and important investigations of lunar and martian silica from the viewpoints...martian materials, the formation processes, the implications for planetary science, and the future prospects |  | | Journal (article/letter/editorial) | | ECONOMIC VOL. XXXII THE GEOLOGY SEPT.-OCT., ORIGIN OF 1937 PRIMARY ARTHUR LEAD No. 6 ORES...oreā¢ead. Its standard atomic weight (I936) is 2o7.21. The lead dispersedthrough rocks in minute quantitiesis...presentin the rock-material; and partly of radiogeniclead, which has been generated in the same rock-material...rock-material as a result of the radioactivedisintegrationof uraniuhā¢and thoriumduring geological time,...now taken to be about 2,ooo million years. From the available determinations of lead, uranium, and thorium |  | | Journal (article/letter/editorial) | | heterogeneities Productivity and sediment supply from the E-O boundary in Tanzania R.J. OāCONNELL1*, S.B....hotspots. The residues from of these processes, as well as the recycled products, are circulated in the mantle...spatially. We model the evolution of heterogeneities in a statistical model in which the isotopic composition...length scale and depth of heterogeneities evolve. The change in length scale of heterogeneities depends...location in the mantle; deformation rates are high in the upper mantle, and lower in the higher viscosity |  | | Journal (article/letter/editorial) | | com/loi/tigr20 ACCESSORY MINERALS AS AN INDICATOR OF THE EVOLUTION OF THE LITHOSPHERE V. V. Lyakhovich To cite this...(1987) ACCESSORY MINERALS AS AN INDICATOR OF THE EVOLUTION OF THE LITHOSPHERE, International Geology Review... ACCESSORY MINERALS AS AN INDICATOR OF THE EVOLUTION OF THE LITHOSPHERE V. V. Lyakhovich Downloaded...geologicheskaya, 1987, No. 4, pp. 3-14. The author is with the Institute for Study of the Lithosphere, USSR Academy...SciĀ ences, Moscow [ILSAN]. He finds differences in the compositions and abunĀ dances of accessory minerals |  | | Journal (article/letter/editorial) | | allanite and hoegbomite in a marble skarn from the Bergell contact aureole: implications for mobility...metasomatically altered spinel-calcite-marble from the contact with the Bergell intrusives (Switzerland/Italy)....Replacement of spinel by hoegbomite can be described by the substitution 1.94(Mg 2+, Fe 2 +, Zn 2+, Mn 2+, Ca...are held constant. The average composition of the Bergell hoegbomites is given by the formula Feo.97Mgo...and seems to be imposed by the composition of pre-existing spinel. During the first two steps of spinel |  | Hazen, Robert M., Grew, Edward S., Downs, Robert T., Golden, Joshua, Hystad, Grethe (2015) MINERAL ECOLOGY: CHANCE AND NECESSITY IN THE MINERAL DIVERSITY OF TERRESTRIAL PLANETS. The Canadian Mineralogist, 53 (2) 295-324 doi:10.3749/canmin.1400086 | Journal (article/letter/editorial) | | canmin.00.00.1400086 21-07-15 9:32 1 The Canadian Mineralogist Vol. 00, pp. 1-29 (2015) DOI: 10.3749/canmin...1400086 MINERAL ECOLOGY: CHANCE AND NECESSITY IN THE MINERAL DIVERSITY OF TERRESTRIAL PLANETS ROBERT M...85721-0089, U.S.A. ABSTRACT Four factors contribute to the roles played by chance and necessity in determining...determining mineral distribution and diversity at or near the surfaces of terrestrial planets: (1) crystal chemical...characteristics; (2) mineral stability ranges; (3) the probability of occurrence for rare minerals; and |  | | Journal (article/letter/editorial) | | 648, 2005 Copyright Ā© 2005 Elsevier Ltd Printed in the USA. All rights reserved 0016-7037/05 $30.00 ā«¹ .00...composition of hydrothermal zircon and the alteration of Hadean zircon from the Jack Hills, Australia PAUL W....fluid-infiltration events and water/rock interaction. At the Boggy Plain zoned pluton (BPZP), eastern Australia...scheelite, molybdenite, thorite and rutile in incipiently altered aplite and monzogranite. The hydrothermal zircon...zircon is texturally distinct from magmatic zircon in the same rocks, occurring as murky-brown translucent |  | | Report (issue) | | ARIZONA Chapter A Mineral Resources of the Mount Wilson Wilderness Study Area, Mohave County, Arizona...BLACK MOUNTAINS REGION, ARIZONA DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary U.S. GEOLOGICAL...purposes only and does not imply endorsement by the U.S. Government UNITED STATES GOVERNMENT PRINTING...PRINTING OFFICE, WASHINGTON : 1989 For sale by the Books and Open-File Reports Section U.S. Geological Survey...Cataloging-in-Publication Data Mineral resources of the Mount Wilson Wilderness Study Area, Mohave County |  | | Journal (article/letter/editorial) | | Zagi Mountain and related sites near Peshawar on the border between Pakistan and Afghanistan have recently...what are probably the ļ¬nest specimens of bastnƤsite, xenotime, and baotite known. The minerals occur in...in alpine-type veins in alkali granite gneiss of the Warsak igneous complex. INTRODUCTION New York had...hot and humid August day when I (HO) boarded the 747, but the fierce heat I found when I arrived in Peshawar...lifetime! Peshawar, the provincial capital of the North West Frontier Province, was the first stop on what |  | | Journal (article/letter/editorial) | | 833 The Canadian Mineralogist Vol. 47, pp. 833-846 (2009) DOI : 10.3749/canmin.47.4.833 THE TRACE-ELEMENT...TRACE-ELEMENT RECORD IN ZIRCON FROM THE LAVRAS DO SUL SHOSHONITIC ASSOCIATION, SOUTHERNMOST BRAZIL Joaquim Daniel...rhyolite, quartz monzonite, monzonite, and diorite from the Lavras do Sul Shoshonitic Association (LSSA) were...analyzed by LAāICPāMS for trace elements including the REE after petrographic and mineralogical studies...Neoproterozoic comagmatic suite associated with the postcollisional setting and strike-slip basins in |  | | Journal (article/letter/editorial) | | 21218, U.S.A. 2 abStRaCt The origins and near-surface distributions of the ~250 known uranium and/or...evolution. This history can be divided into four phases. The first, from ~4.5 to 3.5 Ga, involved successive concentrations...distribution into magmatic-related fluids from which the first U4+ and Th4+ minerals, uraninite (ideally UO2)...(USiO4), precipitated in the crust. The second period, from ~3.5 to 2.2 Ga, saw the formation of large low-grade...detrital uraninite (containing several wt% Th) in the Witwatersrand-type quartz-pebble conglomerates deposited |  | | Report (volume) | | on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission ...on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission ...WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY...SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing...Nature of the descriptive and experimental data_____________________ Method of calculation of the age_-- |  | | Journal (article/letter/editorial) | | here on Earth, and in reduced settings such as the Moon. We present a series of oxygen fugacity-buffered...at 1 atm and in a piston cylinder, respectively. The first style of experiments involved enclosing polished...to and lower than the Fe-FeO equilibrium, crystals revealed alteration often in the form of convoluted...convoluted features, which may to be related to the stability of the apatite component P2O5 under reducing conditions...or 2 N NaOH fluids. The oxygen fugacity was buffered at about 4 log units below the fayalite magnetite |  | | Journal (article/letter/editorial) | | granite: Implications for granite petrogenesis on the Moon Stephen M. Seddio1,*, Randy L. Korotev1, Bradley...and Planetary Sciences and McDonnell Center for the Space Sciences, Washington University, St. Louis...K-feldspar. The identification of the silica polymorph present in the granophyre can clarify the petrogenesis...petrogenesis of the lunar granites. The presence of tridymite or cristobalite would indicate rapid crystallization...perhaps intrusive, slow crystallization, allowing for the orderly transformation from high-temperature silica |  | Snape, J.F., Nemchin, A.A., Grange, M.L., Bellucci, J.J., Thiessen, F., Whitehouse, M.J. (2016) Phosphate ages in Apollo 14 breccias: Resolving multiple impact events with high precision UāPb SIMS analyses. Geochimica et Cosmochimica Acta, 174. 13-29 doi:10.1016/j.gca.2015.11.005 | Journal (article/letter/editorial) | | version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting...note that during the production process errors may be discovered which could affect the content, and all...all legal disclaimers that apply to the journal pertain. J. F. Snape1*, A. A. Nemchin1,2, M. L. Grange2...with high precision U-Pb SIMS analyses Abstract The U-Pb systems of apatite and merrillite grains within...systematic difference was identified between the 207Pb/206Pb ages of the apatites and merrillites. A combined |  | | Journal (article/letter/editorial) | | Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands * Corresponding author. Fiona.Thiessen@nrm...obtained by secondary ion mass spectrometry. Some of the analyzed grains occur as cogenetic, poikilitic zircon...~4200ā4220 Ma, and ~4150 Ma. The age distribution of the crystal clasts in the breccias exhibits a minor...sites, enhancing the confidence that these grains recorded a global zircon-forming event. The overall age...age distribution among the four breccias exhibits minor differences between the breccias collected farther |  | | Journal (article/letter/editorial) | | Illinois. ff, as Wentworth suggests,the position of geology among the sciences is an anomalous one, that..."a sort of peripatetic relative of the fundamental sciences,going the rounds of more respectableabodes...travels abroad-away from the abodes o{ its family group. Mineralogy, on the other hand, is mainly a laboratory...itself an honored place in the family of sciences,in that it has contributed to the family points of view...thought that have well repaid its relatives for the aid received from them. Mineralogy can claim no methods |
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