 | Harris, C., Cressey, G., Bell, J. D., Atkins, F. B., Beswetherick, S. (1982) An occurrence of rare-earth-rich eudialyte from Ascension Island, South Atlantic. Mineralogical Magazine, 46 (341) 421-425 doi:10.1180/minmag.1982.046.341.02 | Journal (article/letter/editorial) |
| eudialyte from Ascension Island, South Atlantic C. HARRIS, G. CRESSEY, J. D. BELL, F. B. ATKINS, AND S. BESWETHERICK...BESWETHERICK Department of Geology and Mineralogy, Parks Road, Oxford ABSTRACT. A mineral closely resembling...perthite granites. The only singlecrystal X-ray pattern and chemistry has been found specimen found to contain...block from the 5 Mile Post area on 30(1)] falls within group (iii). Ascension Island. To our knowledge...silicates, consists of perthite and quartz (often showing dalyite and vlasovite.Textural evidencesuggests |
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| Mineralogy and Petrology Contrib Mineral Petrol (1985) 91:74-81 9 Springer-Verlag1985 Hydrogen and oxygen...geochemistry of Ascension Island lavas and granites: variation with crystal fractionation and interaction...interaction with sea water* Simon M.F. Sheppard and Chris Harris** Centre de Recherches P~trographiques et G6ochimiques...Vandoeuvre-l~s-Nancy, France Abstract. Lavas and pyroclastics on Ascension Island contain plutonic blocks that include...ratios, F and C1 have been analysed on whole rocks and/or minerals for lavas and granites, and D/H ratios |
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| Contributions to Mineralogy and I~etrology Contrib Mineral Petrol (1982) 79 : 107-113 ,~ Springer-Verlag...Syenite Blocks from Ascension Island C. Harris and J.D. Bell Department of Geology and Mineralogy, Parks...included in a trachyandesite lava flow on Ascension Island exhibit features attributable to partial melting...The liquid so formed has been quenched to a glass and the chemical variation of the glass is considered...mineralogy and modal proportions of each block - especially the presence or absence of quartz - and the chemical |
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| Magmatic Inclusions in the Plutonic Ejecta of Ascension Island by CHRIS HARRIS* (Received 25 May 1984; revised...Plutonic blocks' in the volcanic and pyroclastic rocks of Ascension Island contain a variety of silicate... mainly in the intermediate (monzonite-syenite) and granite types. The silicate melt inclusions consist...density CO2 + H 2 0 inclusions, predominantly vapour and (iii) high density approximately pure H2O inclusions...have contained greater than 5 wt. per cent H2O before saturation was reached and homogenization temperatures |
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| BULLETIN 63 Geologic Series PETROGRAPHY AND GENESIS OF THE NEW JERSEY BEACH SANDS By ROBERT L. McMASTER...CONSERVATION and ECONOMIC DEVELOPMENT JOSEPH E. McLEAN, Commissioner Division of Planning and Development...Series PETROGRAPHY AND GENESIS of the NEW JERSEY BEACH SANDS DIVISION OF PLANNING AND DEVELOPMENT WILLIAM...WILLIAM C. COPE, Director BUREAU OF GEOLOGY AND TOPOGRAPHY MEREDITH E. JOHNSON, State Geologist T R E N...SURVEY ─ ii ─ COUNCIL OF THE DIVISION OF PLANNING AND DEVELOPMENT THOMAS R. JONES, Chairman ......... |
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| yt _ FLOAT, PLACER GOLDA,NDOT SS. A.Ferguson and E.B.Freeman 7 ame B25 CLE) veed Ferguson, Ontario...gold, and Be9 wihth Ferguson, Ontario float, Stewart A. occurrences placer gold, of and NATURAL...OCCURRENCES OF FLOAT, PLACER GOLD, AND OTHER HEAVY MINERALS by S.A.Ferguson and E.B.Freeman 1978 Reprinted...by , Ontario Ministry of Northern Development and Mines Sean Conway, Minister of Mines ©OMNR-OGS...Geological Survey, Ministry of Northern Development and Mines, are available from the following sources. |
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| 7001, Australia 2 Department of Geological Survey and Mineral Exploration (DGSE), Nay Pyi Taw, Myanmar...presents a brief account of the copper deposits and occurrences in Myanmar. Myanmar has more than 70...epigenetic vein-type and epithermal gold ± silver deposits. Copper-bearing vein and skarn deposits are...present in Myanmar (e.g. Baladokhta, Mandalay region and Shweminbon, Kalaw township, southern Shan State)...Cyprus-type copper ± gold deposits (e.g. Leymyetna) and porphyry Cu–Mo–Au deposits, such as Shangalon in |
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| McClure Rock. The distance between McClure Rock and Crater, a station marked by a rock cairn on the bare...by stadia and checked by plane-table intersections. The elevation of Crater is 14,267 feet and that of..............................;........... Precise and primary leveling....................................................:......................... 5 5 5 5 5 6 6 7 7 189 195 ILLUSTRATION. PLATE I. Geological...marks.................................... 3 Page. 5 U. 8. GEOLOGICAL SURVEY BULLETIN 674 GEOLOGICAL |
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| BuLLETIN No. '21 A REPORT ON THE LIMESTONES AND MARLS OF THE COASTAL PLAIN OF GEORGIA BY J. E...1916. To His Emcellency, NAT. E. HARRIS, Governor and President of the Advisory Board of the Geological...Brantly, Assistant State· Geologist, on the Limestones and Marls of the Coastal Plain of Georgia, to be published...iv v-viii ix-x P .A.RT I PHYSIOGRAPHY, STRUCTURE AND GEOLOGY OF NORTH GEORGIA . . • . . . . . . . . ......................... . Undifferentiated Eocene and Oligocene ............. ·............ . Oligocene |
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| COOPERATION WITH THE UNITED STATES GEOLOGICAL SURVEY AND THE UNITED STATES BUREAU OF MINES BULLETIN NO. 16...1-2 Introduction Part I. The origin, occurrence, and uses of peat ................ . 3-29 The origin of................................... . 3-5 Definitions of peat and muck ........................ . 3 Composition.................. . 5-9 Classification of fresh water swamps .................. . 5 Climatic influences.................. . 10-14 Plant deposits in lakes and ponds .................... . 10 Plant deposits on |
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| ENGLAND AND WALES. VOL. IV. TI-IE GEOLOGY OF TI-IE LONDON BASIN. • PART I. THE CHALK AND THE EOCENE...EOCENE .BEDS OF THE SOUTHEllN AND WESTERN TRACTS. llY WILLIAM WHITAKER, B.A. (LOND.). (PABTS BY I-I. W...W. BRISTOW, F.R.S., AND T. MoK. HUGHES, M.A.) PUl!Ll6llllD BY ORDJ.lll OF TIIE LORDS OOllMlSSIO�ERS...ISWD .BX EDWARD STANFORD, G, CnARINa 0Ross, S.W. .AND BY 27902, 1872. • INTRODUCTORY NOTIOE. TRE...mouth of the estuary of the Thames, and embracing the largest and most important part of the London Basin |
