Cruz, S. R., Watangua, M., Melgarejo, J. C., & Gali, S. (2008). New insights into the concept of ilmenite as an indicator for diamond exploration, based on kimberlit petrographic analysis. Revista de la sociedad española de mineralogia, 9, 205-206.

Reference Search (possible matching items)

	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
	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
	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
	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
	Xu, Jingyao, Melgarejo, Joan Carles, Castillo-Oliver, Montgarri (2018) Ilmenite as a recorder of kimberlite history from mantle to surface: examples from Indian kimberlites. Mineralogy and Petrology, 112. 569-581 doi:10.1007/s00710-018-0616-5	Journal (article/letter/editorial)
	wollastonite (Si, TAP, Kα), corundum (Al, TAP, Kα), chromite (Cr, PETL, Kα), periclase (Mg, TAPH, Kα), V (V...strictu (s.s.) field; 2) geikielite replacing chromite xenocrysts and type 1 ilmenite xenocrysts; 3)...as other Ti-rich minerals, such as Ti-bearing chromite and Cr-rich mathiasite. Therefore, depending on...Mg-ilmenite and serpentinized olivine Mg-ilmenite, chromite, jeppeite, Phlogopite, Ti-rich hydrogarnets, altered...and Ti-rich hydrogarnets Serpentinized olivine, chromite, Olivine microphenocrysts, spinel rutile, phlogopite
	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)
	µm in diameter) with compositions ranging from chromite to ulvöspinel (spinel 2, Fig. 1c). 2. Methods...rim (Phl8); f) Xenocrystic chromite core (Spl4) replaced by another chromite (Spl5), titanomagnetite (Spl6)...Generations composition olivine Ol1 Macrocrysts chromite Spl4 phlogopite Phl2 Ilm1 geikielite Veinlets...fine-grained. In some cases, a rare early generation of chromite (spinel 4, less than 50 µm), occurs as irregular...spinel prism (Fig. 4d). Xenocrystic spinel 4 is chromite (36.2 – 38.2 mol % FeCr2O4) and has 0.99 –1.29
	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)
	Monomineral thermobarometry Garnet Clinopyroxenes Chromite Ilmenite Trace Elements a b s t r a c t Regularities...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...3.5 GPa was subjected to refertilization. But chromite PT estimates mostly refer to the heated conditions...the melt feeders because the largest pipes like Catoca have much higher sub-calcic garnets (Ashchepkov
	*(2007, June) Gems & Gemology* Vol. 43 (2) Gemological Institute of America**	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., 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)
	aggregates of phlogopite, diopside, amphibole, Ti chromite and picroilmenite (7 wt % MgO); large ilmenites...compositions from different regions Yakutian kimberlite province (Daldyn, Alakit and Malo-Botuobinsky fields)....from different regions within Yakutian kimberlite province (Nakyn, Upper Muna and Anabar fields). 1. Ilmenites...close to the PT conditions for HT eclogites and chromite inclusions in diamonds (Logvinova et al., 2005)...of olivines, coexisting with garnets, pyroxenes chromite and ilmenites. 1. Clinopyroxene thermobarometry
	Vasiliev, E. A., Petrovsky, V. A., Kozlov, A. V., Antonov, A. V. (2018) Infrared Spectroscopy and Internal Structure of Diamonds from the Ichetyu Placer, Central Timan, Russia. Geology of Ore Deposits, 60 (7) 616-624 doi:10.1134/s1075701518070073	Journal (article/letter/editorial)
	Urals, Brazil, and the northern Yakutia diamond province has been identified in diamond crystals of the...example, at deposits in the Arkhangelsk diamond province, their share reaches as high as 60%, but up to...laser excitation. Inclusions of forsterite and chromite with diamond facing are present in the core and...Gray-to-blue-to-violet hydrogen-rich diamonds from the Argyle mine, Australia, Gems and Gemology, 2003, vol. 45, no...characteristics for some diamonds from the Kaapvaal Province, S. Africa. Mineral. Mag., 1999, vol. 63, pp.
	*(2005) INTERESTING PAPERS IN OTHER JOURNALS. Economic Geology, 100 (7) 1473-1483 doi:10.2113/gsecongeo.100.7.1473*	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
	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... The dominant components in these spinels are chromite and magnesiochromite (31–41%), with lesser amounts...ilmenites from the Koidu (Sierra Leone) [80] and Catoca, Angola kimberlites [81,82], as well as for ilmenites...their relation to the North Atlantic Alkaline Province. Lithos 2004, 76, 491–518. [CrossRef] Le Roex
	*(2005, September) Gems & Gemology* Vol. 41 (3) Gemological Institute of America**	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
	*(2023) Mining Review Africa* 1. Vuka Group**	Journal (issue)
	provide glimmer of hope for beleaguered industry Angola From rough diamond to mining giant? Gabon Mining...Phenomenal geology + phenomenal team = phenomenal mine Khoemacau Delivering on expectations, planning the...interest you?” what it requires to deliver a new mine, the editor at the time asked. “Because I successfully...literally considering and busts and most my first mine visit recently, COVID-19. was to Mponeng – The only...throughout all these underground gold changes is the need mine. Travelling to be resilient and around 3 km down
	Ashchepkov, I.V., Kuligin, S.S., Vladykin, N.V., Downes, H., Vavilov, M.A., Nigmatulina, E.N., Babushkina, S.A., Tychkov, N.S., Khmelnikova, O.S. (2016) Comparison of mantle lithosphere beneath early Triassic kimberlite fields in Siberian craton reconstructed from deep-seated xenocrysts. Geoscience Frontiers, 7 (4) 639-662 doi:10.1016/j.gsf.2015.06.004	Journal (article/letter/editorial)
	in the central part of the Yakutian kimberlite province. This is supported by geophysical mantle proﬁles...clinopyroxenes (Cpx), garnets (Gar), olivine (Ol), chromite (Chr), ilmenite (Ilm) and amphiboles (Amph) from...VeKhapchan, VIeBirekte, VIIeXII: AldaneStanovoy province; VIIeOlekma, VIIIeCentral Aldan, IXeEast Aldan...xxx (2015) 1e24 7 Figure 6. Variations of the chromite composition from the concentrate of the kimberlitic...are characterized by enrichment in U and HFSE. Chromite patterns show a Ta-Nb trough instead of peaks
	*(2008) The Journal of Gemmology* Vol. 31 (1-2) Gem-A**	Journal (issue)
	Afghan beryls from pegmatites at Ghursalak in Konar Province (aquamarine, morganite) and from the Panjshir...the Nilaw, Mawi and Kurghal regions of Laghman Province from cavities in pegmatite veins (Figure 1). ...Beryl samples from pegmatites of Ghursalak (Konar Province) and Panjshir Valley in NE Afghanistan were provided...of emerald occur in the Panjshir Valley (Kapisa Province). The Nilaw-Kolum Pegmatite Field (35°12' N and...Ghursalak (Gursalak) Pegmatite Field in Konar Province (about 34°57' N and 70°43' to 70°44' E) has yielded
	Ashchepkov, Igor, Medvedev, Nikolay, Vladykin, Nikolay, Ivanov, Alexander, Downes, Hilary (2020) Thermobarometry and Geochemistry of Mantle Xenoliths from Zapolyarnaya Pipe, Upper Muna Field, Yakutia: Implications for Mantle Layering, Interaction with Plume Melts and Diamond Grade. Minerals, 10 (9) 755 doi:10.3390/min10090755	Journal (article/letter/editorial)
	pipes in the central part of Yakutian kimberlite province (YKP) [1] were exhausted and excavation in open...34–41] for garnet, clinopyroxene, orthopyroxene, chromite, and ilmenite thermometers [12,26,27,34–41] for...for garnet, clinopyroxene, orthopyroxene, chromite, and ilmenite compositions. Details of the calibration...Garnets: 5. T oC-[38]-P(GPa)-[37] ◦ for eclogites; Chromite: 7. T °C-[39]-P(GPa)-[12]; 8. Ilmenite megacrysts...megacrysts [40]-P(GPa)-[41]; 9. T same for eclogites; Chromite: 7. T C-[39]-P(GPa)-[12]; 8. Ilmenite megacrysts
	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...rocks LIMA minerals generally replace or overgrow chromite and are typically associated with phlogopite,...the southwestern portion of the Karoo magmatic province (Fig. 1). The Kimberley kimberlites have been...age of the east peripheral kimberlite at De Beers Mine, Kimberley, R.S.A. Geol. Mag. 120, 505–512. Foley
	*(1991) Magmatism in Extensional Structural Settings. Springer Berlin Heidelberg. doi:10.1007/978-3-642-73966-8*	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
	*(1996, Spring) Gems & Gemology* Vol. 32 (1) Gemological Institute of America**	Journal (issue)
	this stone was cut was found at Guinea's Aredor mine In 1986. Courtesy of william Goldberg Diamond Corp;...(and, until his death, sale owner) of the Mwadui mine, Canadia n geologist Joh n Williamson has a unique....0 Year first diamond found" Country Algeria Angola Botswana Burkina Faso Cameroon Central African...and Zimbabwe. gCentral and East Africa includes: Angola, Central African Republic. Tanzania, andZaire....Mwadui are being overhauled to extend the life of the mine ("Ta nz ania: D e Beers group is to . . . ." 1995)
	*(2008, September) Gems & Gemology* Vol. 44 (3) Gemological Institute of America**	Journal (issue)
	Tajikistan • “Jambolite” • Update on the John Saul ruby mine, Kenya • Ruby and other gems from Nanyaseik, Myanmar...some minerals with a metallic luster (such as chromite) may be present in natural diamonds, their crystal...DeGhionno D.G., Koivula J.I. (1996) Opal from Shewa Province, Ethiopia. Gems & Gemology, Vol. 32, No. 2, pp...Muzo region, which encompasses not only the Muzo mine but also the La Pita, Figure 1. In the six upper...There is also confusion relating to “old mine” emeralds. Old mine is another term applied to rare and fine
	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)
	Bunyaruguru volcanic ﬁeld in the Toro Ankole igneous province (south-western Uganda) were selected for a detailed...groundmass spinels ranging from early Mg\Al-rich chromite to Fe\Ti-rich compositions. 3.2. Major- and trace-element...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...Arzamastseva, L.V., Montero, P., 2001. Kola alkaline province in the Paleozoic: evaluation of primary mantle
	*Edwards, Richard, Atkinson, Keith (1986) Ore Deposit Geology and its Influence on Mineral Exploration. Springer Netherlands. doi:10.1007/978-94-011-8056-6*	Book
	reasons for the approach taken Mineral deposit or mine? A genetic model as the basis for exploration The...study of mineral deposits References Introduction Chromite deposits Nickel sulphide deposits Kimberlites...many geologists who have given their time during mine visits and responded to our queries. We have benefited...strong affinity for sulphur, characterized by the sul;>hide ore minerals. China clay A commercial product...Decline Doline A downward inclined tunnel into a mine or potential ore body. A funnel-shaped depression

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Chromite from Catoca Mine, Lunda Sul Province, Angola

Chromite from
Catoca Mine, Lunda Sul Province, Angola