 | Robles-Cruz, Sandra E., Watangua, Manuel, Isidoro, Leonardo, Melgarejo, Joan C., Galí, Salvador, Olimpio, Antonio (2009) Contrasting compositions and textures of ilmenite in the Catoca kimberlite, Angola, and implications in exploration for diamond. Lithos, 112. 966-975 doi:10.1016/j.lithos.2009.05.040 | Journal (article/letter/editorial) | | compositions and textures of ilmenite in the Catoca kimberlite, Angola, and implications in exploration for diamond... Spain ENDIAMA, Major Kanhangulo, 100, Luanda, Angola Departamento de Geologia, Faculdade de Ciências...Agostinho Neto, Av. 4 de Fevereiro 7, 815, Luanda, Angola a r t i c l e i n f o Article history: Received...c t The Catoca group-I kimberlite, the only currently active diamond-producing mine in Angola, was emplaced...Elsevier B.V. All rights reserved. 1. Introduction Angola has become an important producer of diamond (Janse |  | Robles-Cruz, Sandra, Melgarejo, Joan, Galí, Salvador, Escayola, Monica (2012) Major- and Trace-Element Compositions of Indicator Minerals that Occur as Macro- and Megacrysts, and of Xenoliths, from Kimberlites in Northeastern Angola. Minerals, 2 (4) 318-337 doi:10.3390/min2040318 | Journal (article/letter/editorial) | | of Xenoliths, from Kimberlites in Northeastern Angola Sandra E. Robles-Cruz 1,*, Joan Carles Melgarejo...in the Lucapa area, northeastern Angola: Tchiuzo, Anomaly 116, Catoca, Alto Cuilo-4, Alto Cuilo-63 and...petrogenetic evolution of the kimberlites in northeastern Angola and have important implications for diamond exploration...exploration. Minerals 2012, 2 319 Keywords: Angola; kimberlite; olivine; garnet; clinopyroxene; diamond;...xenoliths; REE; Sm/Nd isotopes 1. Introduction In Angola, more than 700 occurrences of kimberlite are distributed |  | Robles-Cruz, Sandra E., Escayola, Monica, Jackson, Simon, Galí, Salvador, Pervov, Vladimir, Watangua, Manuel, Gonçalves, Antonio, Melgarejo, Joan Carles (2012) U–Pb SHRIMP geochronology of zircon from the Catoca kimberlite, Angola: Implications for diamond exploration. Chemical Geology, 310. 137-147 doi:10.1016/j.chemgeo.2012.04.001 | Journal (article/letter/editorial) | | SHRIMP geochronology of zircon from the Catoca kimberlite, Angola: Implications for diamond exploration...0E8, Canada d Sociedade Mineira de Catoca, Catoca, Lunda Sul, Angola e Departamento de Geologia, Universidade...Agostinho Neto, Av. 4 de Fevereiro 7, 815 Luanda, Angola b c a r t i c l e i n f o Article history: Received...U–Pb dating SHRIMP Geochronology Zircon Diamond Catoca kimberlite a b s t r a c t We present the first...zircon from the diamondiferous Catoca kimberlite in northeastern Angola, the fourth largest kimberlite |  | Castillo-Oliver, Montgarri, Melgarejo, Joan Carles, Galí, Salvador, Pervov, Vladimir, Gonçalves, Antonio Olimpio, Griffin, William L., Pearson, Norman J., O'Reilly, Suzanne Y. (2017) Use and misuse of Mg- and Mn-rich ilmenite in diamond exploration: A petrographic and trace element approach. Lithos, 292. 348-363 doi:10.1016/j.lithos.2017.09.021 | Journal (article/letter/editorial) | | Australia CE [c] Sociedade Mineira de Catoca, Catoca, Lunda Sul, Angola AC [d] Departamento de Geologia...Neto de Luanda, Avenida 4 de fevereiro 71, Luanda, Angola. Abstract ACCEPTED MANUSCRIPT Magnesian ilmenite... MA Key words: diamond exploration, ilmenite, Angola, kimberlite, LA-ICP-MS PT E D Corresponding...ilmenite found in the Cat115 and Tchiuzo pipes (NE Angola). Additionally, the relationships between ilmenite...elements as tools for diamond exploration. Although Angola is the fourth largest diamond producer in Africa |  | Pervov, V. A., Somov, S. V., Korshunov, A. V., Dulapchii, E. V., Félix, J. T. (2011) The Catoca kimberlite pipe, Republic of Angola: A paleovolcanological model. Geology of Ore Deposits, 53 (4) 295-308 doi:10.1134/s1075701511040052 | Journal (article/letter/editorial) | | 53, No. 4, pp. 330–345. The Catoca Kimberlite Pipe, Republic of Angola: A Paleovolcanological Model...de Catoca, Republica de Angola, Lunda Sul, Catoca Received January 18, 2011 Abstract—The Catoca kimberlite...the world’s largest primary diamond deposits. The Catoca volcanic edifice is only slightly eroded. Kimberlitic...deposit and a paleovolcanological model of the Catoca pipe formed during a full cycle beginning with...10.1134/S1075701511040052 1 INTRODUCTION The Catoca kimberlite pipe is one of the world’s largest primary |  | Castillo-Oliver, Montgarri, Galí, Salvador, Melgarejo, Joan Carles, Griffin, William L., Belousova, Elena, Pearson, Norman J., Watangua, Manuel, O'Reilly, Suzanne Y. (2016) Trace-element geochemistry and U–Pb dating of perovskite in kimberlites of the Lunda Norte province (NE Angola): Petrogenetic and tectonic implications. Chemical Geology, 426. 118-134 doi:10.1016/j.chemgeo.2015.12.014 | Journal (article/letter/editorial) | | of perovskite in kimberlites of the Lunda Norte province (NE Angola): Petrogenetic and tectonic implications...of perovskite in kimberlites of the Lunda Norte province (NE Angola): Petrogenetic and tectonic implications...of perovskite in kimberlites of the Lunda Norte province (NE Angola): petrogenetic and tectonic implications...Australia D [c] Sociedade Mineira de Catoca, Catoca, Lunda Sul, Angola CE P Abstract TE Corresponding...an approach, no similar study had been done in Angola, the fourth largest diamond producer in Africa |  | 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 Carbonatites—The Bonga Complex (Angola) Minerals, 9 (10) 601 doi:10.3390/min9100601 | Journal (article/letter/editorial) | | Concentration in Carbonatites—The 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, José, Manuel, José, 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...Antonio 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) | | Monte Verde Carbonatite–Alkaline–Agpaitic Complex (Angola) Sandra Amores-Casals 1,2, *, Antonio Olimpio Gonçalves...Universidade Agostinho Neto, Luanda, Caixa Postal 815, Angola; tonygoncalves72@hotmail.com Institut de Ciències...agpaitic minerals; eudialyte; rinkite; loparite; Angola 1. Introduction Undersaturated alkaline rocks...Huambo and Kwanza Sul provinces, is one of the least studied carbonatite complexes in Angola. As a few studies...between Kwanza Sul, Benguela, and Huambo provinces, 500 km from the capital of Angola, Luanda (Figure |  | | Journal (issue) | | diamonds of cube and cuberelated shape from the Jwaneng mine,” Journal of Crystal Growth, Vol. 94, 1989, pp....has been more recently reviewed in an article of mine (B. Rondeau et al., “Diamants cubiques et presque...1930s and the impact of World War II. The Premier mine closed in 1932, and the Kimberley mines were closed...decades. There was a jump in 1968 when the Finsch mine came into full operation, after which production...resumed and gained momentum in 1992 when the Venetia mine came on stream. Production has climbed steadily |  | | Journal (article/letter/editorial) | | tabular to anhedral Mn-rich ilmenite associated with calcite and chlorite replacing perovskite and ulvöspinel...fine-grained serpentine minerals, chlorite and calcite. Fine-grained galena and pentlandite may also be...spinel group minerals, phlogopite perovskite and calcite Altered olivine and Mg-ilmenite Ulvöspinel, perovskite...phlogopite, serpentine, Ti-rich hydrogarnet and calcite Serpentinized olivine Spinel group minerals, perovskite...perovskite, phlogopite, serpentine, apatite, calcite and Ti-rich hydrogarnets Serpentinized olivine, chromite |  | | Thesis/Dissertation | | Caracterización del vulcanismo carbonatítico de Catanda (Angola) Marc Campeny Crego ADVERTIMENT. La consulta d’aquesta... vulcanismo carbonatítico de Catanda (Angola) Tesis doctoral presentada por... vulcanismo carbonatítico de Catanda (Angola) Tesis doctoral presentada ... estat possible realitzar-‐lo a Angola gràcies a l’esforç, la dedicació...carbonatite locality reported in Angola. The Catanda area is also |  | | Journal (article/letter/editorial) | | 93 kimberlite pipes and veins in the Yakutian province (more than 7500 major component analyses), the...Olenekskaya provinces in the Yakutian kimberlite province was GEOCHEMISTRY INTERNATIONAL Vol. 50 No. 12...for the exam ined portion of the diamondiferous province (Table 6). This model for unaltered kimberlites...of the lithos phere in the Yakutian kimberlite province decreases from south to north, the distribution...fields in a seismic map of the diamondiferous province [21]: the data points of the fields swarm at |  | | Journal (article/letter/editorial) | | located within the Arkhangelsk Diamondiferous Province (NorthWestern Russia), and results of the U-Pb...(Schmitz et al. 2003); and the Catoca kimberlite in the Casai craton, Angola (Nikitina et al. 2014). Evaluating...located within the Arkhangelsk Diamondiferous Province (ADP), contains significant varieties of mantle...2a-c). The altered areas comprise serpentine, calcite, chlorite, apatite, barite, celestine, and baritocelestine...quartz that have been replaced by chlorite and calcite. This sample was also described by Koreshkova et |  | Xu, Jingyao, Melgarejo, Joan Carles, Castillo-Oliver, Montgarri, Arqués, Laia, Santamaria, Joan (2018) Ilmenite generations in kimberlite from Banankoro, Guinea Conakry. Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 195 (3) 191-204 doi:10.1127/njma/2018/0096 | Journal (article/letter/editorial) | | matrix consists of phlogopite (near 60 modal %), calcite (20 – 30 modal %), spinel-group minerals (10 modal...they are surrounded by serpentine 3 (Srp3) and calcite (Cal); j) euhedral titanomagnetite (Sp3) in a phlogopite-rich...Mn-rich ilmenite magnetite Spl8 serpentine Srp3 calcite Cal Stage1 Stage2 Stage3 Fig. 2. Paragenetic...grain borders and cracks, in association with calcite and type 3 serpentine (Fig. 1h and i). This serpentine...macrocrysts consists of cryptocrystalline aggregates of calcite with the above generations of serpentine-group |  | Starikova, Anastasiya, Prokopyev, Ilya, Doroshkevich, Anna, Ragozin, Alexey, Chervyakovsky, Vasily (2021) Polygenic Nature of Olivines from the Ultramafic Lamprophyres of the Terina Complex (Chadobets Upland, Siberian Platform) Based on Trace Element Composition, Crystalline, and Melt Inclusion Data. Minerals, 11 (4) 408 doi:10.3390/min11040408 | Journal (article/letter/editorial) | | olivine macrocrysts: early phlogopite-diopside-calcite-apatite association, containing Ti-magnetite and...plume activity forming the Siberian large igneous province (LIP), and the Chadobets UML-carbonatite complex...alkaline complex within the Siberian large igneous province (LIP) on the Siberian craton [37]. (b) Geological...aggregates of clinopyroxene, biotite, dolomite, calcite, apatite, and in some cases, potassium feldspar...daughter-phase of calcite, which occupies about 45–50 vol %. The CaO content in the calcite was determined |  | | Journal (issue) | | lower-quality diamonds from Australia’s Argyle mine, coupled with the exponential expansion of India’s...Beers by securing lucrative diamond sources in Angola, Namibia, and Russia. De Beers recast its own operations...Congo [DRC] after 1996) Minière de Bakwanga (MIBA) mine and Angola’s state-owned diamond-mining company...the open market. With one exception (the Argyle mine), all major diamond production sources were controlled...producers (effectively forcing them to stock at the mine sites). Yet several forces were developing that |  | Kostrovitsky, S.I., Yakovlev, D.A., Soltys, A., Ivanov, A.S., Matsyuk, S.S., Robles-Cruz, S.E. (2020) A genetic relationship between magnesian ilmenite and kimberlites of the Yakutian diamond fields. Ore Geology Reviews, 120. 103419 doi:10.1016/j.oregeorev.2020.103419 | Journal (article/letter/editorial) | | diamondiferous kimberlite fields in the Yakutian province. This combined data set includes 10,874 analyses...diamondiferous kimberlite fields in the Yakutian province. The pipes locations with each field, are reported...in the diamond fields of the Yakutian kimberlite province (YKP). Mineralogical assessment of these intrusions...different diamondiferous fields of the Yakutian province (in parentheses - the number of analyses). TiO2...diamond-bearing kimberlite fields of the Yakutian province: A Mirninsky; B - Daldynsky; C - Alakit-Marhinsky; |  | | Journal (article/letter/editorial) | | diplogenetic stratified copper deposit, Anhui Province—Xu Zhaowen, Lu Xiancai, Ling Hongfei, Lu Jianjun...Waterberg deposit: Why South Africa’s first platinum mine failed—Iain McDonald and Marian Tredoux 243 252...Xiazhuang uranium orefield, northern Guangdong Province—Ling Hongfei, Shen Weizhou, Deng Ping, Jiang Shaoyong...composition of the Berkeley pit lake and surrounding mine waters, Butte, Montana— Damon A. Pellicori, Christopher...fault in the Hearne domain, Western Churchill Province: U-Pb geochronological constraints—K. MacLachlan |  | | Journal (issue) | | pearls commonly consists of prismatic crystals of calcite and the outer layer, the nacre layer, is made up...shown to consist mainly of aragonite, whereas calcite has been reported only rarely. Instead, vaterite...differences between the carbonate polymorphs, vaterite, calcite and aragonite areas and thereby indicate where...witherite cerussite magnesite dolomite corundum calcite hematite aragonite, 2 directions 90° 4000 spinel...CO3-2 in different carbonate minerals (for example calcite, aragonite and dolomite) has its main vibrations |  | Nosova, A.A., Kargin, A.V., Sazonova, L.V., Dubinina, E.O., Chugaev, A.V., Lebedeva, N.M., Yudin, D.S., Larionova, Y.O., Abersteiner, A., Gareev, B.I., Batalin, G.A. (2020) Sr-Nd-Pb isotopic systematic and geochronology of ultramafic alkaline magmatism of the southwestern margin of the Siberian Craton: Metasomatism of the sub-continental lithospheric mantle related to subduction and plume events. Lithos, 364. 105509 doi:10.1016/j.lithos.2020.105509 | Journal (article/letter/editorial) | | the formation of the vast Tunguska flood-basalt province in the northern half of the Tungus superterrane...located at the southwestern periphery of this province, which was outside the main Permian–Triassic linear...et al., 2006). Journal Pre-proof Carbonate. Calcite containing up to 5 wt. % SrO, BaO, FeO and MgO...magmatism, including Pr rocks of the Maimecha-Kotuy province, as well as the Late Triassic alkaline-ultramafic... Journal Pre-proof Ma) and from the Maimecha-Kotui province in the Siberian Traps (Kogarko and Zartman, 2007) |  | | Book | | of the eastern margin of the Atlantic (Namibia, Angola) or the western African kimberlites do not fulfil...individual chapters: i) the carbonatitic-alkaline province outcropping on the Kenya-Uganda border which have...Petrogenesis of the volcanic rocks of the Karoo Province edited by ERLANK (1984). In addition, a review...review paper related to this volcanic province appeared in the book devoted to the Flood Basalts Provinces...138 139 142 146 146 5 The Mesozoic Tholeiitic Province of Northwest Africa: A Volcanotectonic Record |  | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kamenetsky, Vadim S., Sharygin, Victor V., Golovin, Alexander V. (2013) Trace-element partitioning in perovskite: Implications for the geochemistry of kimberlites and other mantle-derived undersaturated rocks. Chemical Geology, 353. 112-131 doi:10.1016/j.chemgeo.2013.01.007 | Journal (article/letter/editorial) | | spinel-group minerals, Phl = phlogopite, Cal = calcite, Ol = olivine): (a and b) Chicken Park; (c and...Bunyaruguru volcanic field in the Toro Ankole igneous province (south-western Uganda) were selected for a detailed...instrument. 117 crystals enclosed in a fine-grained calcite-spinel-serpentine (± olivine ± phlogopite ± apatite...hypabyssal and crater-facies kimberlites on the Diavik mine property, also in the Lac de Gras kimberlite field...carbonate-bearing hypabyssal kimberlite, Lac de Gras, Slave Province, Northwest Territories, Canada. Lithos 76, 415–433 |  | | Journal (article/letter/editorial) | | is proportionate. Experiments with K-alum and calcite crystals indicate that proportionate growth is...of the transformation in nature of aragonite to calcite from analysis of growth-limited replacement microstructures;...Laboratory, Oak Ridge TN 37831, USA The existence of calcite + periclase or brucite in contactmetamorphosed...compensated by dissolution of Ca-bearing minerals (calcite and gypsum). The availability of these minerals...dissolves rapidly providing calcium for the exchange. Calcite dissolution takes place when gypsum is depleted |  | | Journal (issue) | | located in northeastern Mozambique, in Nampula Province, adjacent to the village of Mavuco (figure 4)...Delgado Niassa M O Z A M B I Q U E Nacala Nampula Province Monapo Ilha de Mozambique Nampula ` Alto Molócue...are found in northeastern Mozambique, in Nampula Province, near the village of Mavuco. From Nampula, Mavuco...Mavuco can be reached via Murrupula. Mining area Province boundaries Paved road Dirt road areas near Mt...in winter. The average temperature in Nampula Province varies from ~23°C (73°F) in April to ~28°C (82°F) |
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