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| ; it raises the question of subsidence in the Berbice Valley, and of the early Amazon drainage ; and...sea-level, are the great and important deposits of bauxite for which British Guiana is famous. The lateritic...when approaching the meridional valley of the Berbice River, it falls toward sea-level and is in turn...exception of the high " inselbergs " of the Roraima region in the western portion of the Colony. The rocks...and intrusive dolerites and gabbros ; much of the region is forest-clad, there being some savannah and |
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| Council OVERSEAS ME1'IOIR 4 The geology of southern Guyana, South America J. P. Berrange London Her Majesty's...Essequibo-Corentyne Granite Complex 35 Southern Guyana Granite Complex 36 Kanashen Adamellite 37 Marudi...Laterite Formation 80 North Savanna Formation 82 Berbice Formation 84 Rivers Formation 84 85 Thirteen: Geomorphology...95 Magnesite 95 Manganese 96 Iron 96 Laterite, bauxite, and calcrete 98 Sand and gravel 98 Hydrocarbons...table for southern Guyana 6 Schematic distribution of metamorphic facies in southern Guyana 1 S Stereograms |
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| geology of southern Guyana SIR - As a former Director of the Geological Survey of Guyana (1957-62) it gives...the geology of the rather inaccessible region of southern Guyana with a most up-to-date professional competence...in terms of reconnaissance geology a survey of Guyana begun in 1868 by two government geologists and...detailed descriptions of the Precambrian of southern Guyana given by Dr Berrange are of great value and constitute...the Nappi Laterite Formation in the interior of Guyana, can be correlated with the high-grade commercial |
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| subsidence in Cainozoic times. The depth of the Berbice channel may have to be considered in the light...misrepresented the paper in his comments. Firstly, the region between the Corentyne and Essequibo rivers from...been completely removed, is obviously not the same region as that where its presence is already indicated...literature and maps cited by Mr. Bracewell. The region to which I referred, as is clearly shown on the...boundary of the Colony. This is ' ' the region of the Berbice downwarp where the rivers run northward |
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| oil. The citral content, although approaching the upper limit recorded, is in all cases below the 80 per...irrigation in a normal year. (5) Manuring.-In the Grasse region no stable manure is used, but ·small quantities...of the existence of some 50,000 species in the region covered by the work, Dr. Merrill has had no light...Agric. Br. Guiana. Pp. 35, 9¾ X 7!. (Georgetown, Demerara : '' The Daily Chronicle,'' Ltd., r946.) Sugar...ranchers. There are, however, three important bauxite-mining centres; also a number of settlements and· |
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| (1971) 9 Springer-Verlag 1971 Marine Muds along the Guyana Coast and Their Origin from the Amazon Basin D...of clay samples from the Amazon basin and the Guyana coast., including samples collected inland and...potassium fixation were determined. The muds from the Guyana coast have virtually the same composition as those...der 1Vfarel (in Nedeco, 1962; Sombroek, 1966): Guyana, A m a z o n ; A h m a d et al. (1963): G u y a...s (125) f r o m t h e A m a z o n basin and the Guyana coast and including samples collected inland and |
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| tuff, an almost pure quartz-sand, and masses of bauxite containing cent, of the in the more aluminous varieties...weathering to a mixture of quartz, of kaolinite, of bauxite, and of the oxides and hydrates of iron, changes...decomposition of the felspars ; of kaolinite, of bauxite, and of limonite, or other more or less hydrated...Kaolin, Sericite, and other felspathic dehris, etc. Bauxite . . 24 32 24 20 100 The earths I quoted as examples...quartz-sand, say with 90 per cent, of quartz, and to bauxite with 63 per cent, of aluminium hydrate and 20 per |
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| GEOLOGICAL SURVEYS MINERAL RESOURCES DIVISION BAUXITE, ALU INA AND ALU INIU L.ON.DON HER MAJESTY'S...GEOLOGICAL SURVEYS MINERAL RESOURCES DIVISION BAUXITE, ALU INA AND ALU INIU By SMITH BRACEWELL,...INTRODUCTION . • • • • • • • • • ] BAUXITE The occurrence of aluminous materials in the earth's...earth's crust Nature and composition of bauxite • • • • Age, stratigraphy and mode of occurrence • •...World production and trade Bauxite resources of the wor1d Substitutes for bauxite . • • • .. • • 2 8 |
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| 14 1. 2. 3. 4. 5. Asbestos ore Lead ore-Balmat Mine, N. Y. Chromite-chromium ore, Wash. Zinc ore-Friedensville...Manganese ore, banded rhodochrosite 8. Aluminum ore, bauxite, Georgia 9. Native copper ore, Keweenawan Peninsula...Colo. 14. Tungsten ore, North Carolina World Bauxite Resources By SAM H. PATTERSON, HORACE F. KURTZ...the geologic and geographic occurrences of world bauxite resources and discussions of uses, exploration...Cataloging-in-Publication Data Main entry under title: World bauxite resources. (Geology and resources of aluminum) |
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| Silica Orthoclase . Plagioclase Kaolinite Talc . t Bauxite Ilmenite Haematite Liraouite Minor constituents...*Gibbsite tTotal Alumina Dre sent in Bauxite . 100-2 4-4 2-9 495 Berbice (white) 6-8 -3 1-9 -3 76-3 -4 6-5...proportions of felspathic rock powder and perhaps some bauxite. The contents of the spheroids in the red one from...contains over 40 per cent. In the white one from the Berbice River both spheroids and cementing material appear...appear to consist mainly of kaolinite with some bauxite. In their compositions the rocks offer little resemblance |
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| Sociery,London, W.1 • Vl Contents PAGE ARTICLES Bauxite Resources of Jamaica and their Development. By...Jlustrations . Geologyand Developmentof Jamaican Bauxite Plate I Plate II Plate III Plate IV Plate V Plate... Hill, near Mandeville, Jamaica, B.W.I. • 312 Bauxite Mining in Jamaica, B.W.I. • • • '' 313 ,, ,, •...326 327 Silica Content Isolines of Jamaican Bauxite and Terra page Rossa • • • • • • . facing p. Diagrammatic...across Central Jamaica page Typical Sections of Bauxite Deposits in Jamaica • . facing p. Geological Map |
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| Niobium in bauxite. . . . . . . . . . . . . . . . . . . . . . Niobium in byproducts of bauxite plants.....Possibility of recovery of niobium from Arkansas bauxite and from titanium minerals. . . . . . . . . . .... . . ... 5 3. Niobium content of products of bauxite treatment at the Hurricane Creek plant, R.eynolds...6. Analyses of fractions of a black sand from bauxite. . . . . . . . . . . . . . . . . . . . . . . ....of alkalic rocks produces bauxite enriched in niobium. Analyses show bauxite from Arkansas to contain |
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| headwaters of the Amazon tributaries, that is, the region east of the Andes in Colombia, Peru, Brazil and...March 3 1 , 1940. Pp. 15, 1 3 X 8½. (Georgetown, Demerara : '' The Argosy '' Company, Ltd.) Winter Rye Growing...By G. 0. Case. Pp. 14, 1 3 x 8½. (Georgetown, Demerara : " The Argosy ' ' Company, Ltd.) Sap-strain,...since 1929. This has come chiefly from the Sullivan mine in southern British Columbia. (The refinery at Trail...the Sullivan mine in southern British Columbia, probably the world's greatest zinc mine, and 20 per cent |
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| r :::(, , 5 -11 , Bauxite Reserves and · 'otential Aluminum Resources of the World I GEOLOGICAL...GEOLOGICAL SURVEY BULliETIN - I ;· 1228 J Bauxite Reserves and Potential Aluminum Resources of the World...resources of bauxite, and of potential sources of aluminum in rocks and minerals other than bauxite UNITED...________________ Prospecting and appraisal of bauxite deposits_____________________ Acknowledgmen~- ___________________...------------------------------------Potential bauxite resources_________________________________ ~ineral |
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| Asbestos 1 Barite Mica Nepheline syenite 10 Bauxite 19 Beryllium minerals Borates 167 27 Nitrates...come not merely from one district but from a single mine. Thus the physical properties of many rocks and...eclipsing the mineral magnesite in some areas; the trona mine rather than the Solvay plant is now the main source...chrysotile. One of these bodies is worked at the Advocate Mine near Baie Verte. The canoe-shaped body is contained...and mill no. 1 at Black Lake, Bell’s underground mine and mill at Thetford Mines, and Lac’s open pit and |
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| NOTES AND ABS1"'RACTS The Development of the Bauxite Resources of Jamaica The Coal and Lignite Resources...Volcanics with Carbonatite Cores • • The Geology of the Upper Zambezi Valley • • South Australian Drillers' Convention...is perfectly homogeneous from top to bottom, but upper and lower surfaces are generally irregular though...bole up to 2 ft. in thickness are common on the upper surfaces of agglomerates. The attitude of the flows...of . which is a 20-ft. raised beach, while the upper two are made up of flows of highly vesiculated doleritic |
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| • • • • • The Geology of Sombrero • • • • • • Bauxite Deposits in Dutch and British Guianas . • • British...vegetation . . . were instrumental in changing the upper horizon of the parent rock to a greater or lesser...suggestions were advanced for the sub-division ·of this upper horizon, or profile, into zones. The first adequate...together with increased percentages of iron. The upper parts of this mottled zone become darker in colour...postulate gains support from field observation. In the region of approximately twenty feet from the base of the |
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| DEPOSITS OF THE GUAYANA SHIELD IN VENEZUELA, BRAZIL, GUYANA, SURINAME, FRENCH GUIANA, AND COLOMBIA by Gary.............................................. 48 GUYANA..................................................searches were as follows: 1) Venezuela and Guayana (or Guyana or Guiana) Shield, with 108 items; and 2) Venezuela...references compiled by TECMIN for the Guayana Shield region of Bolivar State and the Amazon Federal Territory...areas of the Guayana Shield, including Brazil, Guyana, Suriname, French Guiana, and Colombia were also |
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| Funtumia is mainly concentrated in .the high forest region of the Western Provinces, from which about 1,000...Province is by far the more important vine rubber region~ we have a considerable num·ber of different species...potentialities explored. Vine frequency in this region varied from 0·2 to 3·6 per acre. Average latex...let alone skilled tappers, is very scarce in this region and is one of the greatest problems, but given...continuously humid, hot climate of the cacao growing region of West Africa greatly favours the development |
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| zinc. Jamaica has become an important producer of bauxite and alumina, and the value of these rose by over...and redeposition along the major faults of the region. New analyses of the 12 Letter from Prof. F. A...Zircons from nepheline-syenite-gneiss, south of Mine Camp, Tambane apparent ages of four samples: 515...from an albite-aegirine rocl( 2 miles north-west of Mine Camp, Tambane apparent age: 542 m.y. Average apparentage...and other uranium and thorium minerals of this region would be invaluable. The unit cell method applied |
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| in Japan by the Furuka\va Mining Co. at its Ashio Mine, north of Tokyo. The vein is estimated at 500,000...developing a uranium mine at Jaduguda in Bihar. Also under construction are a mill near the mine for processing...Chambishi mine in Zambia is now fully operational. The concentrator for RST's fourth and newest mine has now...in order to form a thin porous oxide. Calcined bauxite facilities with rated capacity of 400 tpd will...will be located at Everton on the Berbice River, next to Reynolds bauxite drying facilities and loading terminal |
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| . . . . . . . 219 Inauguration of Jamaican Bauxite Industry. By V. A. Zans, Mag. Rer. Nat., Rabil...Vol. 1. Edited by H. E. Landsberg . • The Basis of Mine Surveying. By M. H. Haddock . . . • PERSON ALIA...• • . facing p. 213 Plate II Lake Nyasa and Upper Shire River . • • • Plate III Fluctuations...manufactured • Fig. I Resistivity Results at Nsuta Mine Fig. 2 Fig. 3 '' ,, Fig. 4 ,, Fig. 5 Fig....accumulation of barriers or bars across the channel of the Upper Shire 3 o" 3 5° 40a r-_,.-.-.•.,~....;.,..°'--r---- |
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| million), in consequence of larger shipments of bauxite and gold; Gold Coast (£1 ·2 million), where the...which had the distinction of exporting industrial bauxite, valued at £420,000, _for the first time in her...mainly as conspicuous intrusive plugs of which ~he upper portions may have formed endogenous domes. Trachytic...investigations and Dr. Stringer has visited the same region to assist in photogeological work. Towards the...50,000 scale has continued in the Zambezi Valley region, particular attention being paid to the Karroo |
 | | Journal (issue) |
| percolating waters of meteoric origin both withi11 the upper parts of the wolfram-bearing veins and in wolfram...demonstrates that the deposits occur within the upper portions or cupolas of the granite batholith o:r...structural grounds, that this type of granite forms the upper portion of the Kawungera boss or cupola and that... in the Lipago Mountains, and in the Kete,vaka region. i\. survey of Lake atron was carried out \i\fith...occupied by charnocl{itic rocl{s. In the Ketewaka region and betvveen the Ketewaka and Luano valleys, biotitegneisses |
 | | Report (volume) |
| Annotated Bibliography of the Bauxite Deposits of the World GEOLOGICAL SURVEY BULLETIN 999 Annotated... Annotated · Bibliography of the Bauxite Deposits of the World By ELIZABETH C. FISCHER GEOLOGICAL SURVEY...ILLUSTRATION 1 Map showmg the locatiOn of the prmCipal bauxite d1stucts of the world ______________ ---------...pocket PLATE m ANNOTATED BIBLIOGRAPHY OF THE BAUXITE DEPOSITS OF THE WORLD By ELIZABETH c FISCHER...requests to the Geologwal Survey for mformat10n on bauxite, from variOus defense agencies and from pnva.te |
