 | 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 |  | 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 |  | 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 |  | | 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...and forming inclusions in diamonds. Because the Catoca kimberlite pipe is one of the richest diamond-bearing...on eclogite xenoliths from the Catoca and CAT-115 (Kasai Craton, Angola) kimberlite pipes, which are common |  | 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...replaced by secondary Nb-rich perovskite and Nb-rich rutile. REE-bearing carbonates and phosphates formed only...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 |  | 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 |  | 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) | | HighNb Rutile from Upper Mantle Eclogite Xenoliths of the DiamondBearing Kimberlite Pipe Catoca (Angola)...1134/S1028334X14010103 The Luanda diamond province (northeastern Angola), including the Catoca kimberlite pipe, which is...Craton is more than 300 km [2, 3]. Kimberlite pipe Catoca is characterized by a spe cific set of mantle...contain numerous rutile grains, often up to about 1–2 mm. A characteristic feature of all rutile grains is the...(Fig. 2). Depending on the type of eclogite, the rutile com position varies mainly in the contents of |  | 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 (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...celestine, and baritocelestine (Fig. 2c and f). Rutile and zircon (< 1 vol.%) and ilmenite (1 vol.%) are...are the primary accessory phases in the EGE. Rutile and ilmenite are present as single grains that are |  | | Journal (article/letter/editorial) | | xenoliths (e.g., apatite, baddeleyite, ilmenite, rutile, titanite), with varying degrees of success. Here...certain mantle xenoliths, such as mica–amphibole–rutile– ilmenite–diopside (MARID) nodules (Kinny and Dawson...Ma); O = Orapa Mine (Botswana) (93 Ma); C = Catoca Mine (Angola) (118 Ma); J = Jwaneng Mine (Botswana) (235...(235 Ma); M = Mir Mine (Russia) (365 Ma); V = Venetia Mine (South Africa) (528 Ma); P= Premier pipe of...of the Cullinan Mine (South Africa) (1.2 Ga). F igure 1 intrusions, or approximately 20% of the ~3 |  | 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) | | Russia CATOCA Mining Society, Av. Talatona, N/N, Quarter GU-01, Luanda 10257-10398, Angola Correspondence:...part of the Dharwar craton in India [69,83,84], Angola [85–87], and several localities from South Africa...(A) 0 T oC Fe# Ol in equilibrium with Cpx, Gar Catoca cluster 1 2 1 2 Gr Hi-Mg GrA2 3 45 mw/m2...Dharwar craton; Catoca cluster kimberlites. Symbols the same as for Figure 3. (B) Catoca cluster kimberlites...Roberts Victor pipe, Kaapvaal Craton, Africa 5.4. Catoca pipe, Craton, Africa This Congo pipe, Kasai the |  | | Journal (article/letter/editorial) | | Ni (Ni, LIFH, Kα), sphalerite (Zn, LIFH, Kα), rutile (Ti, PETJ, Kα), wollastonite (Ca, PETL, Kα), Nb...late anhedral Mn-rich ilmenite replacing either rutile xenocrysts or type 1 ilmenite and being replaced...mentioned above (Fig. 2f), and b) subtype 4B replaces rutile (Fig. 2h). All of them are replaced by ulvöspinel...olivine, chromite, Olivine microphenocrysts, spinel rutile, phlogopite and group minerals, perovskite, Mg-ilmenite...(15°55′20^N; 77°17′30″E) Serpentinized olivine and rutile SK-3 (16°17′52^N; 77°55′58″E) Spinel group minerals |  | | 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 |  | 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) | | pipes (Ashchepkov et al., 2012b) pipes and for Catoca pipe (Ashchepkov et al., in press). New diagrams...V—Hapchan; VI—Birekte; VII–XII—Aldan–Stanovoy province: VII—Olekma, VIII—Central Aldan, IX—East Aldan...some sediments with concentrates of ilmenites, rutile, phosphates were partly melted. They reveal peaks...the melt feeders because the largest pipes like Catoca have much higher sub-calcic garnets (Ashchepkov...studied pipes. The Mesozoic mantle geotherms from NE Angola (Fig. 13A), Congo (Batumike et al., 2009) (Fig |  | | Journal (article/letter/editorial) | | northeastern Angola, which hosts most of the kimberlites of the Congo Craton including Catoca, the world's...alluvial diamonds of the Kasai River, Katanga Province, Democratic Republic of the Congo (DRC), whose...of the cratonic mantle underpinning northeastern Angola. In the fifth paper of the category, Rudloff-Grund...coauthors (304–311) focused on the use of Cr-rich rutile as a powerful tool for diamond exploration. The...The authors carried out U–Pb dating on rutile included in peridotitic and eclogitic garnets from the Internatsionalnaya |  | | 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 |  | Ashchepkov, I. V., Alymova, N. V., Logvinova, A. M., Vladykin, N. V., Kuligin, S. S., Mityukhin, S. I., Downes, H., Stegnitsky, Yu. B., Prokopiev, S. A., Salikhov, R. F., Palessky, V. S., Khmel'nikova, O. S. (2014) Picroilmenites in Yakutian kimberlites: variations and genetic models. Solid Earth, 5 (2). 915-938 doi:10.5194/se-5-915-2014 | Journal (article/letter/editorial) | | 2009; Aulbach et al., 2007) in mica–amphibole–rutile–ilmenite– clinopyroxenes (MARIDs) (Dawson and Smith...peridotites (Fig. 2a, h). They may include intergranular rutile, perovskite or apatite, similar to those in the...in kimberlites from Anabar and Alakit, contain rutile, apatite and perovskite (Babushkina and Marshintsev...Alymova, 2006) often include ilmenites together with rutile similar to those from the Jericho pipe low-Mg eclogites...compositions from different regions Yakutian kimberlite province (Daldyn, Alakit and Malo-Botuobinsky fields). |  | | Journal (article/letter/editorial) | | mechanism for Nb incorporation in rutile and application of Zr-in-rutile thermometry: A case study from...2017; Associate Editor: Makoto Arima] ABSTR ACT Rutile grains occur extensively in host phases of biotite...sometimes show intergrowth texture with ilmenite. Most rutile grains contain up to 3.7 wt.% Nb2O5, which shows...cations (M3+) of Nb5+M3+Ti4þ 2 . Fine-grained rutile grains included in ilmenite are distinctly poor...Fe3þ 4 Ti3 □–1, where □ indicates a vacancy. The rutile grains in the felsic phases contain high Zr contents |  | 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) | | 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...ilmenites from the Koidu (Sierra Leone) [80] and Catoca, Angola kimberlites [81,82], as well as for ilmenites...veins have shown rapid melting of ilmenite, while rutile and apatite are stable up to higher temperatures...their relation to the North Atlantic Alkaline Province. Lithos 2004, 76, 491–518. [CrossRef] Le Roex |  | | Journal (issue) | | moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...instrumentation such as LA-ICPMS—once primarily the province of academia—became a fixture in many gemological...of the company (Even-Zohar, 2007). Because of the mine closures, De Beers’s market share by volume fell...pink diamonds (0.51 and 0.55 ct) from the Argyle mine in Australia were part of the 2007 Argyle pink diamonds...interest in Angola’s Catoca mine in the early 1990s. Commissioned in 1997, Catoca was producing just over |  | 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...40 to 60 μm. Perovskite is typically replaced by rutile and ilmenite. In the Chadobets UMLs, perovskite...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) |  | | Journal (issue) | | PUBLISHER Evans Mumba Companies sign contracts to mine coal in Mozambique 6 First Quantum chooses Centric...market may lead to increased diamond production in Angola 7 Jindal steel and power limited continues to...measures 14 LOCAL NEWS Caledonia Nama to open mine in Chililabombwe 18 Blackthorn finds more Copper...positive for MSA Africa 42 New dawn shuts Dalny Mine in troubled Zimbabwe 44 PWC gold study charts...investments in mining moving towards mechanisation, the mine owners are aiming to move towards greater mining |  | Giuliani, Andrea, Phillips, David, Maas, Roland, Woodhead, Jon D., Kendrick, Mark A., Greig, Alan, Armstrong, Richard A., Chew, David, Kamenetsky, Vadim S., Fiorentini, Marco L. (2014) LIMA U–Pb ages link lithospheric mantle metasomatism to Karoo magmatism beneath the Kimberley region, South Africa. Earth and Planetary Science Letters, 401. 132-147 doi:10.1016/j.epsl.2014.05.044 | Journal (article/letter/editorial) | | located in the southern part of the Karoo magmatic province. The LIMA minerals appear to have formed during...namely the eruption of the Karoo large igneous province in the mid–early Jurassic (174–185 Ma – Jourdan...typically associated with phlogopite, clinopyroxene and rutile, and less commonly with K-richterite, ilmenite...the southwestern portion of the Karoo magmatic province (Fig. 1). The Kimberley kimberlites have been...three xenoliths, LIMA grains are often rimmed by rutile. 4.2. Thermobarometry The equilibration conditions |  | Bataleva, Y.V., Palyanov, Y.N., Sokol, A.G., Borzdov, Y.M., Palyanova, G.A. (2012) Conditions for the origin of oxidized carbonate-silicate melts: Implications for mantle metasomatism and diamond formation. Lithos, 128. 113-125 doi:10.1016/j.lithos.2011.10.010 | Journal (article/letter/editorial) | | with Fe3 +-bearing ilmenite, pyrope-almandine and rutile, contained up to 13 wt.% of Fe2O3. An increase...association with pyrope-almandine and Fe3 +-bearing rutile. It was experimentally shown that CO2-rich ferrous...oxidized “MARID metasomatized” (Mica-Amphibole-Rutile-Ilmenite-Diopside) xenoliths can reach FMQ + 1...carbonation reaction into rutile and Femagnesite, or decompose into rutile and Ti-magnetite assemblage...redistributed into rutile and melt, providing the internal buffer (ilmenite-rutile-magnetite buffer). |
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