 | Goodenough, K.M., Lusty, P.A.J., Roberts, N.M.W., Key, R.M., Garba, A. (2014) Post-collisional Pan-African granitoids and rare metal pegmatites in western Nigeria: Age, petrogenesis, and the āpegmatite conundrumā. Lithos, 200. 22-34 doi:10.1016/j.lithos.2014.04.006 | Journal (article/letter/editorial) |
| pegmatite Critical metals a b s t r a c t The Minna area of western Nigeria lies within a Pan-African...plutons that are well exposed around the city of Minna. In this paper we present new information about...and petrogenesis. The Pan-African plutons around Minna can be divided into two main groups: a group of...early phase of magmatism at c. 790ā760 Ma in the Minna area. This magmatism could be related either to...capital of Nigeria, and is centred on the city of Minna (Fig. 2). This area lies within the western Nigeria |
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| THE GEOLOGICAL SURVEY OF IRELAND, ILLUSTRATlNQ A POR'l'ION OF TIIE COUNTY OF GAIJWAY. BY G. H. KIN...GEOLOGICAL SURVEY OF IRELAND, ILLUSTRATING A l'OR'l'IO.N OF THE ... COUNTY OF GALWAY. BY G. H. KINAHAN...EDWARD HuLL, Director of the Geological Survey of Ireland. 0EOLOGlCAL SURVEY OFFICE, DUBLIN1 28th December...ARAN SHEETS), ā¢ OF THE GEOLOGIC1tL SURVEY OF IRELAND. GENERAL DESORIPTION. area contained within the...occupied by the Atlantic Ocea11 and the entrance to Galway Bay. Tl1e two northern islands of Aran are situated |
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| Discovery Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna...Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Minna Bluff...Bluff Bluff Bluff Bluff Bluff Bluff Mt. Discovery Minna Bluff Mt. Discovery Cmm Smc(clast) Smc(matrix)...194 E 200 E 202 E 203 E 207 E 208 E214 E 215 Minna Bluff Mt. Discovery Mt. Discovery Mt. Discovery... E216 E 219 E 240 E 242D E 243 E 244 Minna Minna Minna Minna E 303(1) E 303(2) Mt. Discovery Mt. Discovery |
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| Yarde Kerri Group Mines. Thence easterly to the Minna camp on the river of that name, and thence along...north. Tin and wolfram occur in narrow, parallel, quartz-filled veins. The country rock is an altered granite...domes in the neighbourhood of Minna camp and near to Dogon Daji on the Minna stream. The boundary between...numerous isolated grassy hills and low ranges. A quartz-riebeckite syenite occurs at Teffi, lying apparently...by the track climbs steeply over an outcrop of quartz-syenite-porphyry (131). The massif itself is of |
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| &ansparent to the ultra-violet radiations, and the quartz substage condenser was of the " dark-ground " type...research on the shores of Douglas Lake, Cheboygan County, Michigan, from July 5 to August 26. Instruction...Harry c. Fortncr, University of Tennessee; Dr. Minna E. Jewell, Milwaukee-Downer College; and Miss Alice |
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| Physical Sciences, Federal University of Technology, Minna 920211, Niger State, Nigeria Department of Geophysics...Landuse (WASCAL), Federal University of Technology, Minna 920211, Niger State, Nigeria; aimiosino@yahoo.com...pegmatite and Aplites dykes and quartz veins Aplites dykes and quartz veins have intruded these rocks...Kwano Campus, Federal University of Technology, Minna, North-Central Nigeria using geoelectric methods |
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| nearly complete alteration to clays, bauxites, quartz, and other secondary materials, or simple hydration...the Ī“D values of synglacially hydrated opaline quartz vug fill from Antarctic Fig. 7āāComparison of...for oxygen isotope analyses Page 13 of 24 89 Minna Bluff locality (Antibus et al. 2014). These samples...feldspar and 33 % quartz and equations for albite-water (OāNeil and Taylor 1967) and quartz-water (Clayton...glass (e.g., Loewen and Bindeman 2015) or measured quartz and feldspar values (Watts et al. 2012). By mass |
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| isotope fractionation between quartz (granular microcrystalline quartz (gmq)) and traces of coexisting...valid several conditions must be fulfilled: 1) Quartz and phosphate must each equilibrate with the same...after sedimentation. 3) After equilibration both quartz and phosphate must be sealed from further exchange...temperature dependence of the fractionation factor for quartz-phosphate must be great enough so that real temperature-induced...AquanZ_phospi,ate and dā*OquanZ (cf. Fig. 2). Very low quartz-phosphate fractionation values for practically |
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| (SOR)Ā£2.5Q PUBLISHED FORTNIGHTLY Republic of Ireland IRE2.50; Australia $4.95; New Zealand $6.95 inc...Chromite, Nepheline, Phillipsite UK AND REPUBLIC OF IRELAND Subscriptions Simply call our subscription hotline...found around the Giantās Causeway in County Antrim, Northern Ireland. FILE PHILLIPSITE Group: Silicates________________...Zaria Kaduna, Ka inji Lake Bauchi Mubi a Jos 8 Minna ZD ā Abuja > B llorin Ogbomosho a Oyo a / ...derived from melts. These include feldspar, mica and quartz. Growth from solution ā Growth from liquid |
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| exporter of rock crystal. Producer of: fusing quartz - quartz with piezoelectric properties. Precious stone...Agwarra, M. Malendo, N . Marigo, 0. Sarkin Pawa, P. Minna, Q. Pategi, R. /fe-llesha, S. Osse, T. Bibiani,...concerned with the extraction of gold from auriferĀ ous quartz deposits, it has no traditional significance. Gold...where the lodes are usually found in metreĀ wide quartz veins. Deposits of this type have been worked by...some 100 km south-west of Kaduna town; vii) near Minna .between the Rivers Kad1,1na and Gbako. In conclusion |
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| prominent in the sale negotiations was Kleinās sister Minna Klein. There is a large file of unpublished correspondence...familyāprincipally Minna, Martin, and Luiseāunable to agree upon an acceptable price, and Minna threatening...Tsumebite Sphalerite Pyrite Enargite Greenockite Silver Quartz Pyromorphite Phosgenite Duftite Chalcopyrite Baryte...Mottramite Olivenite Phosgenite Plumbojarosite Quartz Rosasite Schultenite (T.L.) Silver Smithsonite...sheet of native silver, accompanied by a little quartz with which the sulfide is sparsely included. The |
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| out a very large store of provisions well beyond Minna Bluff, which was called the " One Ton Depdt." On...cellular structure, and a good deal of pure white quartz. This was Scott's last cheerful entry. Altogether |
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| Funtua BENIN Azare KANO Saminaka Kafanchan Minna Suleija Jos Bokkos Lapai KWARA Ilorin 8Ā° OYO...Omu-Aran Isanlu KWARA Riv 8Ā° BAUCHI Saminaka Minna Suleija Lapai ABUJA Damboa Fika Bajoga Zungeru...er N iger Gombe Tafawa Balewa Jos Kafanchan Minna Biu GOMBE Bauchi Toro Zungeru Mokwa Damboa...KANO BAUCHI Kaduna Saminaka NIGER Kafanchan Minna Toro Lapai KWARA Ilorin OYO Bida Riv er N iger...KANO BAUCHI Kaduna Saminaka NIGER Kafanchan Minna Jos Bokkos Suleija Lapai KWARA Ilorin Bida Riv |
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| Introduction The Tsohon Birnin Gwari (TBG) gold-sulphide-quartz reef mineralization is the most extensive in Nigeria...a belt about 50 km wide and stretching from the Minna area in the south up to the TBG area to the north...gold mineralization, in form of subparallel gold-quartz reefs is restricted to a series of N-S trending...sub-parallel shear zones, comprising strained phyllite, quartz stringers and boudins. The shear zones are practically...axial planar to the tight isoclinal folds. In the quartz bodies and altered graphitic phyllites within the |
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| bridges over the Middle Fork o f the Coquille. the County extended the Myrtle Creek road across the mouth...M., and Beaulieu, J.D .ā¢ 1973, Geology of Coos County, Oregon: Oregon Department of Geology and Mineral...near Hilt and Hornbrook, Siskiyou County, California, and Jackson County, Oregon: Corvallis, Oreg., Oregon...pressure studies in the Pacific Creek area, Sublette County, Wyoming, in 5th DOE Symposium on Enhanced Oil...Pl ugging took place on May J 1. 1984. Columbia County 43-22. com pleted nn February 29. 1984. was PUI |
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| the granitic rocks and pegmatites associated with quartz, feldspar and beryl. From the Table 6 above, the...Zamfara and Sokoto States; Ife/Ijesha in Osun State; Minna and Suleja in Niger State, Okolom in Kogi State |
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| least 18.7ā11.4 Ma), mildly alkalic, nepheline- or quartz-normative Mason Spur Lineage, and the younger (at...Al2O3 Fe2O3 MnOT MgO CaO Na2O K2O P2O5 Loi% Total Quartz Nepheline Sc V Cr Co Ni Ga Rb Sr Y Zr Nb Ba La...olistostrome is cross-cut by Mason Spur Lineage quartz trachyte and rhyolite dykes, and rare Riviera Ridge...Highly eroded volcanic plugs of Mason Spur Lineage quartz trachyte are exposed in Pinnacle Valley and these...linear exposure of predominantly Mason Spur Lineage quartz- or nepheline-trachyte lapilli tuļ¬s, surge deposits |
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| Mr. Solly mentions two of unknown origin, the Minna Batta described by Dr. Thomson, and a green solid...rotundatae, concav~e, primariis primis tribus gradatis, quartZ, quintfi, sext,~ et septimfi inter se fer~ eequalibus |
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| occurrenceof cristobaliteor tridymite in the groundmass of quartz-free basaltic and andesitic rocks, accounting for...[in Japanese]. (1940) On the pigeonite-bearing quartz diorite ejecta from Hakone Volcano. J. Geol. Soe...Study of orthopyroxenesfrom volcanicrocks.Amer. Minna|.39,3046. (1954) Geology and Petrology of Omuro-yamaVolcano |
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| sediments are black sapropelic marls, containing quartz silt and clay minerals as well as 30 to 40 per...Aiso the senior author would like to thank the Minna-James-Heineman Stiftung for a travelling grant which...Origin of limestone Buttes, Gypsum Plain, Culberson County. Texas. A m . Assoc. Petrol. Geol., Bull. 60. 2005-2018 |
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| joins the Baro-Kano railway at Minna, some 40-miles east of Zungeru. Minna is situated at a distance of...interested exceeds three million pounds. Galena and quartz reefs carrying free silver have been found in the |
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| that are composed of different granite varieties. Quartz-porphyry dykes and spherulitic rhyolite dykes are...recrystallization textures and undulatory extinction of quartz grains. The Tepasto stock (Fig. 3) consists of...radial patches 0.5--2 cm in diameter (Fig. 4) and in quartz veins. The patches probably represent sites of...irregular lenses or small (10--50 cm) zonal balls, with quartz-rich margins and muscovite-rich centres. In the...the field of granodiorite (Fig. 2). A number of quartz porphyry and aplite dykes (not marked on the map) |
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| magnetite, silicates (grunerite and garnet), and quartz is developed. Magnetite which sometimes contains...consisting of hematite (including specularite) and quartz. Here, minerals of the magnetitic paragenesis only...composed essentially of iron oxides, silicates and quartz. Many of the BIF occurrences are intimately interlayered...consists essentially of magnetite, silicates and quartz. Magnetite is martitized. 9 Two occurrences of...(commonly developed in the form of specularite) and quartz. Relics of martitized magnetite and martite are |
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| phosphates and granular microcrystalline quartz (gmc quartz) pairs. The choice of the ehert-phosphate...incorporation as part of the chert deposit. Both quartz and phosphates are relatively resistant to isotopic...those composed ofgranular microstysralline quartz (gmc quartz) were considered to be reli&le for paleotemperature...The 6ā*0 values of coexisting microcrystalline quartz and phosphate in all the chert samples we have...roughly a linear relation between the 6ā*0 values of quartz and phosphate extracted from the cherts. In general |
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| (Fig. 4). These deposits which occur as auriferous quartz, lenses or lensoid reefs are confined to a northeast-trending...closely associated with pyrite-arsenopyrite bearing quartz. At the Obuasi-Ashanti goldfields, the lensoids...1966). At Bibiani, ore bodies consist of lenticular quartz reefs in sheared schists with local remobilization...porphyry dikes. Near Panra in Upper Volta, auriferous quartz lenses are localized within Birriman rooks (Fig...can be traced to primary sources in auriferous quartz-pyrite-arsenopyrite veins within metavolcanic rooks |
