 | | Journal (article/letter/editorial) | | petrography of the Portuguese West African colony of Angola, and of its three provinces that of Benguella is...descriptions of rocks from Angola, and especially of its northern province, Loanda, have been given by...shonkinite respectively. * BERG, G., "Gesteine von Angola, Sao Thome, und St Helena," Tscher, min. u. petr...Contribution to the Petrology of North-western Angola," Oeol. Mag., dec. vi, vol. ii, pp. 228-232 ; 267-272... P. DE, and MATTOS, A. A. DE, A Golonisagao de Angola, Lisbon, 163 pp., 1912. TRANS. ROY. SOC. EDIK, |  | | Journal (article/letter/editorial) | | Monte Verde CarbonatiteâAlkalineâAgpaitic Complex (Angola) Sandra Amores-Casals 1,2, *, Antonio Olimpio Gonçalves...Universidade Agostinho Neto, Luanda, Caixa Postal 815, Angola; tonygoncalves72@hotmail.com Institut de CiĂšncies...agpaitic minerals; eudialyte; rinkite; loparite; Angola 1. Introduction Undersaturated alkaline rocks...between Huambo and Kwanza Sul provinces, is one of the least studied carbonatite complexes in Angola. As...Tchivira [25,26], Bonga [26â30], Virulundo [31], Bailundo [32], and Catanda [33]. Therefore, an accurate |  | Amores-Casals, , Melgarejo, , Bambi, , Gonçalves, , Morais, , Manuel, , Neto, , Costanzo, , Molist, (2019) Lamprophyre-Carbonatite Magma Mingling and Subsolidus Processes as Key Controls on Critical Element Concentration in CarbonatitesâThe Bonga Complex (Angola) Minerals, 9 (10) 601 doi:10.3390/min9100601 | Journal (article/letter/editorial) | | Concentration in CarbonatitesâThe Bonga Complex (Angola) Sandra Amores-Casals 1,2, *, Joan-Carles Melgarejo...Universidade Agostinho Neto, Luanda, Caixa Postal 815, Angola; aurorabambi@hotmail.com (A.B.); tonygoncalves72@hotmail...is one of the largest carbonatitic outcrops in Angola and worldwide [75], with well-known resources in...carbonatite, located SE of Quilengues, Huila Province, Angola (Figure 1), is a carbonatite-alkaline complex...graben, a megastructure cutting Congo, Kasai and Angola Cratons and reactivated during the opening of the |  | Campeny, Marc, Kamenetsky, Vadim S., Melgarejo, Joan C., Mangas, JosĂ©, Manuel, JosĂ©, Alfonso, Pura, Kamenetsky, Maya B., Bambi, Aurora C.J.M., Gonçalves, Antonio O. (2015) Carbonatitic lavas in Catanda (Kwanza Sul, Angola): Mineralogical and geochemical constraints on the parental melt. Lithos, 232. 1-11 doi:10.1016/j.lithos.2015.06.016 | Journal (article/letter/editorial) | | Carbonatitic lavas in Catanda (Kwanza Sul, Angola): Mineralogical and geochemical constraints on...O., Carbonatitic lavas in Catanda (Kwanza Sul, Angola): Mineralogical and geochemical constraints on...MANUSCRIPT Carbonatitic lavas in Catanda (Kwanza Sul, Angola): mineralogical and geochemical constraints on...Geologia, Universidade Agostinho Neto, Luanda, Angola. Pura Alfonso, Dept. Enginyeria Minera i Recursos...Luanda, Angola. Antonio O. Gonçalves, Depto. Geologia, Universidade Agostinho Neto, Luanda, Angola. Abstract |  | | Journal (article/letter/editorial) | | Agostinho Neto, Av. 4 de Fevereiro 7, 815 Luanda, Angola Earth and Ocean Sciences, School of Natural Sciences...of F, due to the crystallization of ïŹuorite or apatite in the plutonic and hypabyssal carbonatites, or...exsolution in the volcanic carbonatites. K EY WORDS : Angola, carbonatite, zonation in pyrochlore, ïŹuorine,...Ti (Mariano, 1989a; Woolley and Kempe, 1989). Apatite magnetite mineralization is associated with the...carbonatites in Africa (Le Bas, 1971) extends into Angola where the majority of carbonatites crop out along |  | | Journal (article/letter/editorial) | | Rauhaugite a apatite et feldspath Rauhaugite a apatite et feldspath Carbonatite 8. apatite et phlogopite...phlogopite Carbonatite 8. apatite et magnetite Carbonatite a apatite et phlogopite Rodbergite Canaries P 58...Norvege Fen Cap Vert Ile de Fogo Maroc Tamazert Angola #sO/SMOW 7,15 6=C/PDB -6,6 8,OO f 0,2 7,75 f...calcite dans une syenite Sovite a apatite et feldspath Sovite 8. apatite 17,o & 0,15 - 3,5 It 0,2 7,1...6 f 0,3 -6,7 f 0,l -6,7 f 0,l P 104 &kite a apatite 10,o f 0,l - 4,s f 0,l P P 89 90 9,2 f 0,05 |  | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, AndrĂ©s B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | | species in plutonic carbonatites: The Tchivira case, Angola Joan C. Melgarejo a, Alessandra Costanzo b,â, Aurora...Geologia, Universidade Agostinho Neto, Luanda, Angola a r t i c l e i n f o Article history: Received...Tchivira carbonatite, located 400 km south of Luanda (Angola), is a good example of a carbonatite body produced...Geological setting Most of the carbonatite complexes in Angola are found in the Lucapa structure (deVries Lapido-Loureiro...1200 km set of faults oriented NEâSW that cut the AngolaâCongo craton (Issa Filho et al., 1991). Different |  | Le Bas, M. J., Xueming, Y., Taylor, R. N., Spiro, B., Milton, J. A., Peishan, Z. (2007) New evidence from a calcite-dolomite carbonatite dyke for the magmatic origin of the massive Bayan Obo ore-bearing dolomite marble, Inner Mongolia, China. Mineralogy and Petrology, 90 (3) 223-248 doi:10.1007/s00710-006-0177-x | Journal (article/letter/editorial) | | 1â2 km thick; (c) that it contains clusters of apatite and magnetite crystals that are often elongate...that the cathodoluminescent properties of the apatite have been interpreted to indicate a sedimentary...the H8 dolomite marble was a large intrusion of apatite dolomite carbonatite caught up and deformed within...Furthermore, the presence of abundant clusters of apatite and magnetite is atypical of sedimentary carbonate...that P3.47 includes irregular bands of subhedral apatite grains. P3.48 is wholly composed of twinned ferroan |  | Thompson, R., Smith, P., Gibson, S., Mattey, D., Dickin, A. (2002) Ankerite carbonatite from Swartbooisdrif, Namibia: the first evidence for magmatic ferrocarbonatite. Contributions to Mineralogy and Petrology, 143 (3) 377-396 doi:10.1007/s00410-002-0350-0 | Journal (article/letter/editorial) | | basement at Swartbooisdrif, adjacent to the NW Namibia-Angola border. Their age is uncertain but probably 1...prior fractionation of a silicate mineral and apatite. The resulting ferrocarbonatite lacks a silicate...silicate mineral (excluding fenite xenocrysts) and apatite. It has unusually low (basalt-like) REE abundances...Geological formations are not diïŹerentiated in Angola, and the Dwyka sediments are not discussed in this...carbonatites â which extends for 800 km northwards into Angola (Issa Filho et al. 1991; Alberti et al. 1999). |  | | Report (issue) | | associated fenite at 11 localities in the Chilwa Province of Malawi. Remarkably, in that paper it was also...name Alternative name Continent Country State/Province/Territory Latitude Longitude Carbonatite type...number of occurrences per country. Africa Algeria Angola Burundi Congo (DR) Egypt Gabon Kenya Libya Malawi...Canada, United States, Russia, and China), the province, state, or territory in which the occurrence lies...from carbonatite, including bastnĂ€site, monazite, apatite, pyrochlore, magnetite, fluorite, vermiculite, |  | | Journal (article/letter/editorial) | | schorlomite,and titanomagnetite.The gangue is spheneor apatite,and olivine. Pyrochloreis a rarer recrystallization... Somes6viteor alvikite, rauhaugite,pyroxenite,apatite rock, melilitites,nephelin syenite, ijolite, urtite...Tundulu 1 0, 07 Chilwa 2 X 2 [Longonjo 4.5 Bailundo 5 Arax& 4 RESERVES Core, miles Lueshe 1...alkalinerocks, (d) fenRes. Phosphateis fixed in apatite, and sideritic or ankeritic iron segregatesas titanmagnetite...Depositsin Kazakhstan, in the Pacific Maritime Province and in Manjuria are related to granitic rocks |  | Giovannini, Arthur L., Bastos Neto, Artur C., Porto, Claudio G., Pereira, Vitor P., Takehara, Lucy, Barbanson, Luc, Bastos, Pedro H.S. (2017) Mineralogy and geochemistry of laterites from the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) Ore Geology Reviews, 88. 461-480 doi:10.1016/j.oregeorev.2017.05.008 | Journal (article/letter/editorial) | | Craton, in the southeastern part of the Rio Negro Province (Santos et al. 2000). The basement is represented...Other typical rock-forming constituents include apatite, magnetite, and ferromagnesian silicates (Mitchell...goethite, as described in the Longonjo carbonatite, Angola (Castellano et al. 2012). Thus, we consider that...and ankerite. Ba-pyrochlore, barite, phlogopite, apatite and magnetite occur as accessory minerals. The...Ba-pyrochlore and barite. Phosphorus released by apatite decomposition was deposited at the lower levels |  | | Report (issue) | | Atomic Energy Agency: AFGHANISTAN ALBANIA ALGERIA ANGOLA ANTIGUA AND BARBUDA ARGENTINA ARMENIA AUSTRALIA....................................... 49 6.5.1. Angola..................................................incompatible elements. Economic minerals can be apatite, barite, vermiculite, Th, Nb, Ta, Cu, Fe, Zr, Ti...considered as a potential source of phosphate (apatite). Possible by-products are iron, niobium, REEs...Details on the geology and formation of the alkaline province in northern Karelia (Kola Peninsula) are described |  | | Book (edition) | | Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites are now...biotite sOvite (biotite, 10 to 40 per cent), apatite sdvite (apatite, 10 to 30 per cent), see Table 1-2. The...wall-rock alterations brand the area as an alkalic province. The types of carbonatite occurrences may be grouped...Sphene, ilmenite, rutile, Ti-magnetite, zircon, apatite, pyrochlore Volatile elements: F, Cl, H,O H...villiaumite Biotite, hornblende, cancrinite, calcite, apatite Localities: ilimaussaq, Lovozero, Miask, Haliburton-Bancroft |  | | Book | | the Canary Islands, the North Atlantic Igneous Province and the Sunda Arc with a focus on magmatic crystals...the matrix of the SĂ€lskĂ€r breccia. Intergrown apatite has been dissolved by treatment with diluted HNO3...(treated with diluted HNO3 to dissolve calcite and apatite). See text for further details . . . . . . . ....(aegirine augite), with some mica, titanomagnetite and apatite . . . . . . East of Hörningsholm. An intrusive...diopsidic pyroxene, pyrrhotite, melanite garnet, and apatite. Locally, pockets of sövite are present . . . |  | | Report (issue) | | Bailey and S. Kearns 12. Post-Paleozoic magmatism in Angola and Namibia: A review . . . . . . . . . . . . ...provinces of the Saharan zone, Cameroon volcanic line, Angola and Namibia, and the East African Rift system....and the Ethiopian-Yemenite âAfarâ flood basalt province (compiled from Schandelmeier and Reynolds, 1997;...compositionally related to the mainly alkaline province of intraplate magmatism in north Sudan and south...dissolution of a Th (and minor U)ârich mineral, likely apatite, by the leaching procedure. This is supported by |  | | Report (volume) | | geology âThe Making of the Earthâ Visit to Benguella, Angola The classification of coast types, the nature and...Earthquake studies. 1912. Expedition to Benquella, Angola. 1913. Publication of âThe nature and origin of...Territory and the east of Portuguese-controlled Angola to German Southwest Africa. He concluded that âEnglandâ...present and they all fell into the Indo-Pacific province. The first proofs came in July 1899, the final...phenocrysts and augite, aegirine, olivine, and apatite in a groundmass of feldspar microliths and pyroxenes |  | | Book | | Sinian Reservoirs of the Weiyuan Area, Sichuan Province: The Oldest Gas in China y. Xu, P. Shen, Y. Li...isotopically fractionated sulphides in Superior Province, Canada. Chern GeoI65:341-358 Campbell SE (1979)...1.26 MAGNETlTE+ ILMENITE 2.85 2.72 0 .70 APATITE 0.53 0.19 0 .05 CORUNDUM 3.02 0.15 0.72...of weathering profile silcretes, southern Cape Province, South Africa. In: Wilson RCL (ed) Residual deposits...Ga) forms the southern boundary of the Superior province of the Canadian Shield. Uranium-bearing conglomerate |  | | Book (volume) | | 2893 laka language USE Yaka language (Congo and Angola) lAkovlev (Fighter plane) USE Yak (Fighter plane)...River (Netherlands) Ijsel Rivers River (Utrecht Province-South Holland, Netherlands) USE Hollandsche IJssel...language Ikumama Campo Piazza del â Quebec (Province) USE Bizard Island (Quebec) He Bonaventure (Quebec)...people) (May Subd Geog) UF Awa (Southern Highlands Province New Guinea people) Ibo Ugu (Papua New Guinea people)...language L'F Awa language (Southern Highlands Province. Papua New Guinea) Ibo Ugu language Imbon Ggo |  | | Book (volume) | | of a geographic feature, the name of a state or province, or the name of a city, then the name of the country...(Ont. and Quebec) BT Lakes Ontario Lakes Quebec (Province) Abitibi Greenstone Belt (Ont. and Quebec) BT...Greenstone belts Ontario Greenstone belts Quebec (Province) â â â â USE Abkhaz Abkhazians philology ...Abraham, Plains of (Quebec) BT Plateaus Qu6bec (Province) Abraham, Plains of (Quebec), Battle BT Quebec...works dealing collectively with the countries of Angola, Cape Verde, Guinea-Bissau, â Politics and government |  | | Journal (volume) | | found in the caverns of Mount Chauvaux in the province of Namur, Belgium. | 1 Pascalis, an Exposition...the basin of the Cunene and the districts about Angola and Benguela. 6. Finally, in the east, the region...distance west of BihĂ©, near that of the Cunene at Bailundo. The streams flowing to the west directly to the...hand, the potters wheel being unknown. In the province of Para, among the Indians, and to a considerable...The common ware of the civilized Indians of the province of Para is usually very plain and rarely ever |
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