 | 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) | | ilmenite in the Catoca kimberlite, Angola, and implications in exploration for diamond Sandra E. Robles-Cruz... 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...Ilmenite Kimberlite Diamond Fluid Texture Composition a b s t r a c t The Catoca group-I kimberlite,... the only currently active diamond-producing mine in Angola, was emplaced in the northeastern part of |  | 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...xenocrysts suggests the possibility of finding diamond. Geothermobarometric calculations were carried...kimberlites in northeastern Angola and have important implications for diamond exploration. Minerals 2012...2012, 2 319 Keywords: Angola; kimberlite; olivine; garnet; clinopyroxene; diamond; thermobarometry; mantle |  | Ustinov, Victor N., Feijo Bartolomeu, Ana M., Zagainy, Alexander K., Felix, Joao T., Mikoev, Igor I., Stegnitskiy, Yury B., Lobkova, Ludmila P., Kukui, Irina M., Nikolaeva, Evelina V., Antonov, Sergei A. (2018) Kimberlites distribution in Angola and prospective areas for new discoveries. Mineralogy and Petrology, 112. 383-396 doi:10.1007/s00710-018-0628-1 | Journal (article/letter/editorial) | | 1 ORIGINAL PAPER Kimberlites distribution in Angola and prospective areas for new discoveries Victor...a comprehensive analysis of kimberlite pipes of Angola, including the near surface structural setting...emplacement, mineralogical and petrographic features, diamond characteristics and locations of secondary deposits...within Angola representing four types of diamond bearing potential. These areas include high diamond bearing...magmatism and diamond potential of kimberlites increases from the Atlantic coast in southwestern Angola into the |  | 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) | | geochronology of zircon from the Catoca kimberlite, Angola: Implications for diamond exploration Sandra E. Robles-Cruz...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...Keywords: U–Pb dating SHRIMP Geochronology Zircon Diamond Catoca kimberlite a b s t r a c t We present the...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) | | Use and misuse of Mg- and Mn- rich ilmenite in diamond exploration: A petrographic and trace element approach...Use and misuse of Mg- and Mn- rich ilmenite in diamond exploration: A petrographic and trace element approach...USE AND MISUSE OF Mg- AND Mn- RICH ILMENITE IN DIAMOND EXPLORATION: A PETROGRAPHIC AND TRACE PT ELEMENT...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 |  | | Corporate Document | | Endiama – The National Diamond Company of Angola • Sodiam – Angolan National Diamond Trading Company • Ferrangol...Sonangol Oil Company • Geological Institute of Angola • Regulatory Institute for Petroleum Derivatives...Exporting Countries (OPEC) • Association of African Diamond Producing Countries (ADPA) • Organization of African...resources • Tripartite mechanism for co-operation: Angola, South Africa and DRC • African Center for Minerals...has been confirming mining occurrences throughout Angola using aero-geophysical data and revealing geological |  | | Journal (article/letter/editorial) | | Kimberlite Pipes of the Catoca Field, Angola V. N. Zinchenko Catoca Mining Company, Angola Republic Received...than 3200 diamond crystals from kimberlite pipes of the Catoca field located in the Lunda diamond-bearing...diamond-bearing province of northeastern Angola. The diamond crystals from particular pipes of this field differ in...crystals from the Catoca and Kamitongo pipes, indicating more favorable conditions for diamond growth and preservation...mineralogical features of diamond crystals may be used in appraisal of the diamond-bearing potential of their |  | 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...is among the world’s largest primary diamond deposits. The Catoca volcanic edifice is only slightly eroded...deposit and a paleovolcanological model of the Catoca pipe formed during a full cycle beginning with...INTRODUCTION The Catoca kimberlite pipe is one of the world’s largest primary diamond deposits. During |  | Kosman, Charles W., Kopylova, Maya G., Stern, Richard A., Hagadorn, James W., Hurlbut, James F. (2016) Cretaceous mantle of the Congo craton: Evidence from mineral and fluid inclusions in Kasai alluvial diamonds. Lithos, 265. 42-56 doi:10.1016/j.lithos.2016.07.004 | Journal (article/letter/editorial) | | Cretaceous kimberlites of the Lucapa graben in Angola. Analysis of 40 inclusion-bearing diamonds provides...diamonds. Regional homogeneity of Congo fibrous diamond fluid inclusion compositions suggests spatially...spatially extensive homogenization of Cretaceous diamond forming fluids within the Congo lithospheric mantle. In...Clinopyroxene-garnet thermobarometry suggests diamond formation at 1350–1375 °C at 5.8 to 6.3 GPa, whereas...whereas N aggregation thermometry yields diamond residence temperatures between 1000 and 1280 °C, if the |  | 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...no similar study had been done in Angola, the fourth largest diamond producer in Africa. Here we present |  | | Journal (article/letter/editorial) | | of Saint Petersburg, Russia c Catoca Geological-Mining Community, Angola Ac ce p te d M an us cr...age of upper mantle eclogite xenoliths from the Catoca and Cat-115 (Kasai Craton) pipes are presented...ratios. an The Nb/Ta and Nb/La ratios in the Catoca eclogites range from chondritic to superchondritic...in diamonds. Because the Catoca kimberlite pipe is one of the richest diamond-bearing pipes of the world... could be an important mineralogical sign of high diamond productivity for kimberlite Ac ce p te d M |  | | Journal (article/letter/editorial) | | March 2009 Available online 5 April 2009 Keywords: Diamond Annual production Mines Advanced projects Exploration...recovered from the Letseng Mine in 2006, help to drive a multi-billion dollar diamond exploration, mining and...South Africa and Angola account for 83% by value and 65% by weight of annual diamond production, which...weight of annual diamond production for 2007. During the last twelve years 16 new diamond mines commenced...quarter of 2008 with most work carried out in Canada, Angola, Democratic Republic of the Congo (DRC) and Botswana |  | 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 |  | Korolev, N. M., Marin, Yu. B., Nikitina, L. P., Zinchenko, V. N., Chissupa, H. M. (2014) High-Nb rutile from upper mantle eclogite xenoliths of the diamond-bearing kimberlite pipe Catoca (Angola) Doklady Earth Sciences, 454 (1) 50-53 doi:10.1134/s1028334x14010103 | Journal (article/letter/editorial) | | Mantle Eclogite Xenoliths of the DiamondBearing Kimberlite Pipe Catoca (Angola) N. M. Koroleva, Corresponding...1134/S1028334X14010103 The Luanda diamond province (northeastern Angola), including the Catoca kimberlite pipe, which...which is ranked fourth in the world diamond reserves, is located at the intersection of deep fault zones...Craton is more than 300 km [2, 3]. Kimberlite pipe Catoca is characterized by a spe cific set of mantle...respectively. The LMgO and HMgO eclogites formed under diamond depth facies conditions. The P–T conditions were |  | | Journal (issue) | | SUMMER 2007 SUMMER 2007 PAGES 95–196 Global Rough Diamond Production VOLUME 43 NO. 2 Durability Testing..._____________ FEATURE ARTICLES _____________ Global Rough Diamond Production since 1870 A. J. A. (Bram) Janse Reports...weight and value) for the world’s most significant diamond sources, through 2005. 120 Durability Testing..._ 153 Lab Notes Diamond with bimineralic inclusions • HPHT-treated type Ia diamond with a green component...defect • Diamond with intense “rainbow graining” • Natural color hydrogen-rich blue-gray diamond • Type |  | Ashchepkov, I.V., Vladykin, N.V., Ntaflos, T., Downes, H., Mitchell, R., Smelov, A.P., Alymova, N.V., Kostrovitsky, S.I., Rotman, A. Ya, Smarov, G.P., Makovchuk, I.V., Stegnitsky, Yu.B., Nigmatulina, E.N., Khmelnikova, O.S. (2013) Regularities and mechanism of formation of the mantle lithosphere structure beneath the Siberian Craton in comparison with other cratons. Gondwana Research, 23 (1) 4-24 doi:10.1016/j.gr.2012.03.009 | Journal (article/letter/editorial) | | Lakehead University, Canada f Institute of Geology of Diamond and Noble Metals SD RAS, Yakutsk, Russia g ALROSA...lithospheric mantle which are responsible for the diamond grade. The lithospheric mantle consists of two...pipes (Ashchepkov et al., 2012b) pipes and for Catoca pipe (Ashchepkov et al., in press). New diagrams...large pipes were constructed using the data for diamond inclusions (Logvinova et al., 2005; Pokhilenko...shown in Fig. 2 in comparison with diamond inclusions and diamond associations (Sobolev et al., 1984 |  | | Journal (article/letter/editorial) | | material may be key to the formation of primary diamond deposits and studies of the deep Earth, but this...together with diamonds during the final stages of diamond recovery. They often exhibit complex desilicification...kimberlite formation more conducive to hosting primary diamond deposits? Thirty years ago, it would have been...of 40K during mantle residence, diffuses to the diamond/clinopyroxene interface (which acts as a crystal...kimberlites that host the world’s largest diamond mines are shown with diamond symbols and identified by letters |  | Ashchepkov, Igor, Logvinova, Alla, Spetsius, Zdislav, Downes, Hilary, Ntaflos, Theodoros, Ivanov, Alexandr, Zinchenko, Vladimir, Kostrovitsky, Sergey, Ovchinnikov, Yury (2022) Eclogite Varieties and Their Positions in the Cratonic Mantle Lithosphere beneath Siberian Craton and Archean Cratons Worldwide. Minerals, 12 (11) 1353 doi:10.3390/min12111353 | Journal (article/letter/editorial) | | RAS, Favorskogo Str. 1a, Irkutsk 650033, Russia Diamond and Precious Metal Geology Institute SD RAS, Lenina... Russia CATOCA Mining Society, Av. Talatona, N/N, Quarter GU-01, Luanda 10257-10398, Angola Correspondence:...trace a high-temperature (HT) geotherm. Eclogitic diamond inclusions from Siberia mostly belong to the middle...grospydites occur within 4.0–5.0 GPa and HT eclogite and diamond inclusions from the Premier pipe trace a HT geotherm...kyanite-bearing eclogites. Clinopyroxenes from diamond-bearing eclogites show lower REE, troughs in Nb |  | | 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...Mahotkin et al. 2000). The ADP hosts two large diamond deposits: the Lomonosov deposit, which contains...Archean cratonic regions Arkhangelsk diamondiferous province (ADP) Archean Belomorian mobile belt Proterozoic |  | | Journal (article/letter/editorial) | | kimberlite emplacement, and cannot be associated with diamond formation. The higher Mn contents are linked to...Mn contents cannot be considered as a reliable diamond indicator mineral (DIM) and kimberlite indicator...thus indicating an environment that preserves diamond, while the presence of Fe3+-rich ilmenite could...Ryde, NSW 2109, Australia that could destroy diamond (Gurney et al. 1993; Gurney and Zweistra 1995;...inadequate to link oxidized ilmenite with the diamond resorption is also provided (Schulze et al. 1995) |  | Klöcking, M., Hoggard, M.J., Rodríguez Tribaldos, V., Richards, F.D., Guimarães, A.R., Maclennan, J., White, N.J. (2020) A tale of two domes: Neogene to recent volcanism and dynamic uplift of northeast Brazil and southwest Africa. Earth and Planetary Science Letters, 547. 116464pp. doi:10.1016/j.epsl.2020.116464 | Journal (article/letter/editorial) | | contribution from metasomatised lithospheric mantle. In Angola, melting of metasomatised lithosphere is probably...100 km beneath Angola and could be as thin as 60 km in the Borborema Province. For Angola, thermobarometry...topographic domes in northeast Brazil (BP; Borborema Province) and southwest Africa (AD; Angolan dome). (b)...(Ma); grey lines = geological province boundaries; BP = Borborema Province; F = Fortaleza; FN = Fernando...southwest Africa. 2. Geological setting The Borborema Province of northeast Brazil is a Precambrian domain that |  | | Journal (article/letter/editorial) | | of core materials, which were also examined for diamond content (a few samples from each interval), from...diamondiferous potential. Diamond richest kimberlites are practically free of TiO2, whereas diamond poorest ones contain...be provided by theoretical models of rock and diamondforming processes, with the most popular of them...93 kimberlite pipes and veins in the Yakutian province (more than 7500 major component analyses), the...at the Petrochemical Group of the Laboratory of Diamond Deposits at the Sobolev Institute of Geology and |  | | 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 |  | 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) | | ilmenite has also been proposed as a guide for diamond exploration (Kaminsky & Belousova 2009), based...1981), or by a reduced magma, thus stimulating the diamond pres- Authors’ addresses: 1 Departament...Hutchison & Heaman 2008), and in the Lundas provinces (Angola; CastilloOliver et al. 2016). Type 1– 2 ilmenite...Mn-rich ilmenite have been suggested as guides for diamond exploration, the type 3 Mg-rich ilmenites and all...serpentinization processes, thus unrelated with the diamond formation or preservation. Therefore, Mg-rich and |
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