 | | Journal (article/letter/editorial) | | lateritic profile from basalt žJos Plateau, Central Nigeria/ Z. Horvath ´ ) , B. Varga, A. Mindszenty Applied...only a few minor occurrences were described from Nigeria ŽBoulangé and Eschenbrenner, 1971; Mindszenty...Cameroon Volcanic Zone. The Tertiary volcanism of the Jos Plateau is also related to the above-mentioned zone...Beissner, 1986.. The two plateaux ŽMambilla and Jos. are situated at similar latitudes; ) Corresponding.... In 1995, we visited several localities on the Jos Plateau and in the surrounding area. This paper describes |  | | Journal (article/letter/editorial) | | North-Western Nigeria By C. A, KOGBE, Zaria *) With 6 figures Zusammenfassung In Nordwest-Nigeria bedecken...fluvial-vulkanischen Schichtfolge des Jos-Plateaus bedecken. In Nordwest-Nigeria sind Laterite auf Ausbisse yon...Abstract The ferruginous deposits of north-western Nigeria occur extensively capping sediments which outcrop...Department of Geology Ahmadu Bello University, Zaria, Nigeria. Paper presented at the Colloquium on African Geology...laterites and ferruginous sandstones in northwestern Nigeria attain a thickness of approximately 4 meters or |  | | Book | | George Obaje Geology and Mineral Resources of Nigeria 123 Prof. Nuhu George Obaje Nasarawa State University...University Dept. Geology & Mining Keffi Nigeria nobaje@yahoo.com ISSN 0930-0317 ISBN 978-3-540-92684-9...Resources of Nigeria are very few and mostly not accessible in Libraries and Bookshops in Nigeria. This book...activities in the Geology and Mineral Resources of Nigeria. The author has brought together several published...students of geology in tertiary institutions in Nigeria and abroad. Additional insights were also provided |  | | Journal (article/letter/editorial) | | diminishing effect of this substitution on the goethite unit-cell size is well known and is used as a...synthetic ones. MATERIALS AND METHODS Two groups of goethite samples were used. A group of 24 samples from...subtropical soils comprised 11 from the Jos Plateau, Nigeria (Zeese et at., 1994), six from Rio Grande...well as from chemical analyses. In some samples, goethite was concentrated using a hot NaOH treatment to...an acid oxalate extract by AAS. The contents of goethite and hematite were determined by XRD (K~impf & |  | | Journal (article/letter/editorial) | | by centres of ovcrsaturated magmatism such as Nigeria and Sudan. Thcre are also provinces with undersaturated...Geochemistry Mineralization Phanerozoic Cameron Niger Nigeria Sudan Saudi Arabia Namibia 1. Introduction Most...accompanied the uplift which followed it. I n Niger-Nigeria and also Sudan a more or less continuous sequence...Similarly the Mesozoic oversaturated magmatism of Nigeria has an almost identical age range to the mixed...similar age range to the oversaturated complexes of Nigeria. The Namibian Province (19CL120 ma) comprises of |  | | Journal (issue) | | range of emeralds and green beryls from Central Nigeria. Detailed work on inclusions, compositions of hosts...deposits are exploited, e.g. in Australia, Thailand, Nigeria and China (Coenraads, 1992a; Guo et al., 1992)...on sapphire from other basaltic origins (e.g. Nigeria and Australia). She described as significant morphological...are partially filled with a mineral (probably goethite a-FeO(OH), causing a pale brown halo (Figure 20)...Harding, R.R., 1990. Gemstone prospects in Central Nigeria. Journal of Gemmology, 22, 4,195-202 Karr, c., |  | | Journal (article/letter/editorial) | | The alluvial tin-placer deposits of the Jos Plateau (Nigeria) are partly covered by sediments, l0 m thick...was newly-formed by dehydration predominantly of goethite) from the Bahariya Oasis, Western Desert (Egypt)...Beds, as well 27 as brownish-black sandstones (goethite-rich) are common in this region. Ilmenite crystals...Kudu Hill (Malumfashi Metasedimentary Schist Belt Nigeria) concern the previously Mn-rich ilmenite, which...immersion objective, length of crystal 320 jim; Jos Plateau, Nigeria. ) b. Polysynthetic twinning of primary |  | | Journal (article/letter/editorial) | | Bauxites are widespread in Guinea, Ivoly Coast, Nigeria and Cameroon. Some bauxites are very old and seem...(Nahon et al., 1989). The relative stability of goethite compared to hematite, and gibbsite compared to...1985. Geochemistry of laterites stability of Al-goethite, Alhematite and Fe-kaolinite in bauxites and ferricretes...lower tertiary in situ laterites on the Jos Plateau, Nigeria. Journal of African Earth Sci., 5, 5 : 535-550 |  | | Journal (article/letter/editorial) | | within Eastern Dahomey and Niger Delta Basins from Nigeria: Possible Industrial Applications Olaonipekun Oyebanjo...Awolowo University, Ile-Ife 220282, Osun State, Nigeria Directorate of Research and Innovation, University...from the Eastern Dahomey and Niger Delta Basins, Nigeria. The colour, pH, electrical conductivity (EC),...the kaolins were quartz, muscovite, anatase and goethite. The major oxide contents of the kaolins were...enormous reserves have been identified across Nigeria [1,2]. Known kaolin deposits of Cretaceous and |  | | Journal (article/letter/editorial) | | Cornwall, woodwardite, 644 St. Austell, kaolinite, goethite, hematite, 89 Tregarden, biotite, 79 Trelavour...hornblende, plagioclase, 526 Glauconite, 753 Nigeria Jos plateau, anorthosite, I93; genthelvite, 627 |  | | Journal (article/letter/editorial) | | tropical areas limonite zone 1 •— goethite 20% (45%) kaolinite zone ^ goethite 20% (8%) 2 phases of landsliding...slopes has taken place, as on the Jos Plateau in Northern Nigeria (Hill and Rackham, 1978), and in southern...(1978) claimed that many of the deposits on the Jos Plateau appeared to be mudflows, not the products...of the Pleistocene colluvium and alluvium on the Jos Plateau has been an intractable and largely uncontrolled...Rundschau 43, 307-327. mass movement on the Jos Plateau, Nigeria', Brunsden, D. (1980) 'Applicable models |  | | Journal (article/letter/editorial) | | clinochlore, chromite, 394. Saul Hamed, antigorite, goethite, 394. Sukkari, antigorite, 394. Wadi Alaqui, antigorite...clinochrysotile, chromite, 394. Nigeria Arfvedsonite, 317. Bokkos, Jos, albite, anorthoclase, sanidine |  | | Journal (article/letter/editorial) | | embedded in a concretion discovered at Oarda de Jos (Alba county), Romania. in Cluj-Napoca, Romania...(ODA-abbreviation for the exposure from Oarda the Jos Tapejarid with developed and fully ossified premaxillae...at the base of an escarpment (Fig. 1) at Oarda de Jos, in the “Metaliferi area” (Codrea and Dica, 2005)...2005; Codrea et al., 2001, 2010a, 2010b). Oarda de Jos represents the base of the Șard SC Formation, dominated...AC CE P ventrally and caudally by pyrite and goethite (Fig. 4D). UV observations did not reveal the |  | | Report (issue) | | countries (Bolivia, the Belgian Congo (Zaire), Nigeria, and Malaysia) produced over 80 percent of the...include Australia, Bolivia, Indonesia, Malaysia, Nigeria, Thailand, and Zaire. Tin recycling.- In addition...alluvial placers may form, as has occurred in Nigeria. Information for placer deposits in the ISMI tin...and gravel pumps (table 1). Deposits at Jos Plateau in Nigeria are mined by use of gravel pumps and open-pit...Australia, Nigeria, and Zaire are large, and the residual placers of Jos Plateau, Nigeria, are worked |  | | Journal (article/letter/editorial) | | a few bright residual fragments; there was no goethite. The same specimen had the usual coating of one...Inez Mine, Mineral del Monte, Mexico."—on label. NIGERIA — "A friend in the States has sent me a gift subscription..."—item from Mrs. Paul London, c/o S.I.M., Jos, N . Nigeria, West Africa. The bead is a flat, reddish-brown |  | | Journal (article/letter/editorial) | | Aegirine, Nigeria, anal., 595; Tenerife, anal., opt., 805; Greenland, anal., 737 Aenigmatite, Nigeria, anal...Anisotropicthermalexpansionof wollastonite, 649 Anorthosite, Nigeria, petr., significance, 193 Antigorite, infra-red...an AegirineRiebeckite granite, Liruei Complex, Nigeria, 595; --- and SUDDABY (P.), Stressed pyroxenite...Finland, France, Ghana, Malaysia, New South Wales, Nigeria, Uganda, and Zagre, anal., cell-size, M6ssbauer...Canada, Colorado, Massachusetts, New Hampshire, Nigeria, Rhode lsland, and Ukraine, anal., opt., sp. gr |  | | Book | | back into the 1500s and was originally known as San Jos~ de Avino.] Municipio de Poanas Cerro de Sacrificio:...Associated with hemimorphite, calcite, smithsonite, goethite, and lotharmayerite . [Most noted areas of the...with plattnerite, rosasite, hemimorphite, and goethite. ALTAITB PbTe. A rare mineral found in a lead/tellurium...Ahumada/Erupcibn Mine. Crystals to 3 cm. Associated with goethite, sulfur, galena, and gypsum. Municipio de Aquiles...Moderate distribution . Ojuela Mine. Associated with goethite and galena . Municipio del Oro Santa Maria del |  | | Journal (article/letter/editorial) | | golden-yellow radial aggregates up to 1 cm in goethite from Gravel Hill mine, Perranzabuloe, Cornwall...Just, Cornwall (Van Marcke de Lummen, 1986b). Jos#ite (Jos~ite-A) Bi4TeS2 Trigonal A major constituent...Fells, Cumbria, other phases usually present being jos~ite-B, bismuthinite, and ingodite (Peacock, 1941;...other details.] Ingodite Bi2TeS Hexagonal With jos~ite-A, jos~ite-B, and bismuthinite, as a minor component...greenish-yellow fibres, with chalcosiderite in quartz-goethite matrix from Wheal Phoenix, Linkinhorne, Cornwall |  | | Journal (article/letter/editorial) | | transformation of 2-line ferrihydrite to hematite and goethite at 25°C in the presence of different Al concentrations...Al also promotes the formation of hematite over goethite and leads to multidomainic discoidal and framboidal...Synthesis of Fe Oxides. Unit-Cell Size. INTRODUCTION Goethite and hematite are the most common Fe-oxide minerals...three parameters: (1) the ratio of the amount of goethite to hematite, (2) the crystallinity of the two...temperatures of 70100°C, high alkalinity (for goethite), or high acidity (for hematite) to obtain crystalline |  | Singh, Jyotibala, Sangode, S J, Bagwan, M F, Meshram, D C, Dhobale, Anup (2020) Episodic ferricretization of the Deccan Laterites (India): Inferences from ore microscopy, mineral magnetic and XRD spectroscopic studies. Journal of Earth System Science, 129 (1). doi:10.1007/s12040-019-1334-z | Journal (article/letter/editorial) | | varieties of iron oxide minerals (hematite, limonite, goethite) that are further modiBed by allochthonous inputs...of the anti-ferromagnetic minerals (hematite, goethite and limonites). The above mineral magnetic parameters...Cesh coloured bands depicting precipitation of goethite and Al-hydroxides. Under microscope PLL-3 shows...coloured Blling probably indicate presence of goethite (see Bgure 5f). The sample PLL-7 shows prominent...limonite to amorphous greyish brown iron oxide (goethite?). The hematite is almost negligible whereas dull |  | | Report (issue) | | Dietmar Schwarz and Gaston Giuliani Africa: Egypt, Nigeria, Tanzania, . . . . . . . . .52 Mozambique, Zambia...with the free growing emeralds from Colombia, Nigeria and Afghanistan. According to the skill (or lack...Pegmatite Vugs (e.g., Kaduna, Plateau States, Nigeria) The mineralizations of the Kaduna and Plateau Provinces...Provinces in Nigeria are associated with two periods of magmatism and the accompanying intrusion of alkali...-·.:::.: - ... . **�;ii)/_:-,; . • • . e.g., Nigeria Overview (width of about 20 meters) The roof zone |  | | Journal (article/letter/editorial) | | Wilberforce Island, Nigeria 2) Nigerian Institute of Mining and Geosciences, Jos, Nigeria (Received: 8 June...D.E. Egirani and N. Wessey, Effect of clay and goethite mineral systems on lead removal from aqueous solution:...N.R. Poyi, N. Wessey, Synthesis of zinc oxide-goethite composite and its performance on the adsorption |  | | Catalog/List | | a matrix of crystalised Pyrite. 2txlt". £It. GOETHITE. Parknoweth Mine, st. Just, Cornwall. Fine blackish...are mostly about til in size. 91. TOP",-Z. Jos, Nigeria. Fine, well terminated, clear single crystals |  | | Journal (volume) | | Accessory Mineralogy of the Ririwai Biotite Granite, Nigeria, and its Albitized and Greisenized Facies: R. A...Magmatism, and Metamorphism in the Lower Benue Trough, Nigeria: J. Benkhelil ................... 467 A Model for...and traces of gold have been found. Haematite/goethite coatings along late joints cutting the vein quartz...been found. Late impregnations and coatings of goethite haematite are ubiquitous. Country rock alteration...monazite and a gangue con1prising quartz, barite and goethite. A hydrothermal derivation from carbonatite is |  | | Catalog/List | | A nice concentric incrustration in a matrix of goethite 67 X 51 X 58 B. 'lhree specirrens, two LTN and...\ B. an almost pure nugget, 9 x 5 x 5 Nigeria. GO. TOPAZ x - Jos Plateau, A transparant·lustrous terminated |
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