 | Broom-Fendley, Sam, Brady, Aoife E., Horstwood, Matthew S.A., Woolley, Alan R., Mtegha, James, Wall, Frances, Dawes, Will, Gunn, Gus (2017) Geology, geochemistry and geochronology of the Songwe Hill carbonatite, Malawi. Journal of African Earth Sciences, 134. 10-23 doi:10.1016/j.jafrearsci.2017.05.020 | Journal (article/letter/editorial) | | and geochronology of the Songwe Hill carbonatite, Malawi Article in Journal of African Earth Sciences ·...and geochronology of the Songwe Hill carbonatite, Malawi Sam Broom-Fendley a, *, Aoife E. Brady b, 1, Matthew...2017 Available online 2 June 2017 Songwe Hill, Malawi, is one of the least studied carbonatites but has...scarce and is composed of mediumecoarse-grained calcite carbonatite containing zircons with a UePb age...Province and others worldwide. The fine-grained calcite carbonatite (C2) is the most abundant stage at |  | Broom-Fendley, Sam, Wall, Frances, Spiro, Baruch, Ullmann, Clemens V. (2017) Deducing the source and composition of rare earth mineralising fluids in carbonatites: insights from isotopic (C, O, 87Sr/86Sr) data from Kangankunde, Malawi. Contributions to Mineralogy and Petrology, 172 (11) doi:10.1007/s00410-017-1412-7 | Journal (article/letter/editorial) | | isotopic (C, O, 87Sr/86Sr) data from Kangankunde, Malawi Sam Broom‑Fendley1 · Frances Wall1,2,3 · Baruch...compositions for the REE-rich Kangankunde carbonatite (Malawi), we show that the commonly observed, dark brown...et al. 2016); Kangankunde, Tundulu and Songwe, Malawi (Ngwenya 1994; Wall and Mariano 1996; Broom-Fendley...hexagonal crystals, either co-genetic with calcite in calcite carbonatites (e.g., Bear Lodge and Shaxiongdong;...process of burbankite replacement (e.g. Kangankunde, Malawi; Wigu Hill, Tanzania; Gem Park, Colorado; Adiounedj |  | | Journal (article/letter/editorial) | | qualitative multifactor analysis – case studies: Malawi and South Africa F.E.D. Senzani* & A.F. Mulaba-Bafubiandi...techno-economic assessment of rock carbonate deposits in Malawi and South Africa was conducted using a qualitative...centres with high human population density. In Malawi, three targets for potential small-scale Portland...human population density. The limestone deposits of Malawi and South Africa were used as case studies. It...of South Africa Table 1. Cement production in Malawi. Company Capacity in million tons per annum (Mta) |  | | Journal (article/letter/editorial) | | MINERALISATIONS OF MOZAMBIQUE BELT GRANULITES FROM S MALAWI AND TETE (MOZAMBIQUE) MARCO ACHILLE GIACOMO ANDREOLI...mineralisations of Mozambique belt granulites from S Malawi and Tete (Mozambique). Precambrian Res., 25: 161--186...161--186. The granulites of southern Malawi and Tete (Mozambique) typically comprise prograde two-pyroxene...dolerite and diabase. A geochemical investigation of Malawi granulites indicates their marked heterogeneity...metaplutonic types, the bulk chemistry of southern Malawi granulitic rocks is probably volcanic. Analytical |  | | Journal (article/letter/editorial) | | Investigation of the Chilwa Island Carbonatite Complex, Malawi: Evidence for a Depleted Mantle Source Region,...Jurassic, Chilwa Island complex, located in southern Malawi, central Africa, suggest melt derivation from a...Seventeen carbonatite complexes are located in southern Malawi and adjacent Mozambique, at the junction of the... THE CHILWA ISLAND CARBONATITE C O M P L E X , MALAWI / f / / / / / / / / / / — // 1 / s\L...Main diagram illustrates the regional geology of Malawi and distribution of carbonatite centres (solid |  | | Corporate Document | | Element (REE) Project, Phalombe District, Republic of Malawi Prepared by The MSA Group (Pty) Ltd for: Mkango...4.2.1 Exclusive Prospecting Licenses (“EPL”) in Malawi ................................................................................... 33 7.2.1.1 Calcite carbonatite......................................Chilwa Province alkaline intrusions in southern Malawi and Mozambique (after Woolley, 2001) 30 Figure...Figure 7-8 Example of contact between fenite and calcite carbonatite (Brady, 2012) 43 Figure 7-9 Thorium |  | | Journal (article/letter/editorial) | | ratios, particularly of oxygen, in freshwater calcite-depositing organisms has lagged far behind similar...is thermodynamically unstable with reference to calcite under most ambient conditions (Folk, 1965). Therefore...isotope ratio relationship for the precipitation of calcite, and a similar scale has recently been calculated...Zimbabwe Zimbabwe Zambia Malawi Malawi Malwai Malawi Malawi Malawi Malawi Malawi Senegal Nigeria Sudan Somalia...Somalia Zaire Zaire Nigeria Ethiopia Nigeria Malawi Ethiopia Sierra Leone Aldabra Is. No. BM ETU 3175 |  | | Journal (article/letter/editorial) | | analysis in apatite: The example of Songwe Hill, Malawi Sam Broom-Fendley a,b,⁎, Timothy Heaton c, Frances...compared in 10 carbonatite samples from Songwe Hill, Malawi. Apatite is heavy rare earth element (HREE) enriched...composition include: 1) Rayleigh fractionation, where calcite crystallises in equilibrium with H2O and CO2 from...ratios. For example, at the Kangankunde carbonatite, Malawi, dolomite reaches δ18O values in excess of 20‰...in late-stage apatite (e.g. Songwe and Tundulu, Malawi; Broom-Fendley et al., 2016a,b). It is, therefore |  | | Journal (volume) | | Number 57 The llomba Alkaline Complex, northern Malawi and associated uranium-niobium mineralisation ... 2 3 4 5 6 7 Geological history of north-west Malawi 3 Age determinations: Ilomba Alkaline Complex 5...species 18 The llomba Alkaline Complex, northern Malawi and associated uranium-nibbium mineralisation K...K. 1981. The Ilomba Alkaline Complex, northern Malawi and associated uranium-niobium mineralisation....Hill lies in the extreme north-western corner of Malawi at approximately 33° 11 'E, 9°31 'S and is about |  | Censi, P., Perini, G., Vasconcelos, L., Morra, V., Guerreiro, F., Bennio, L., Melluso, L. (2004) Chemical and isotopic (C, O, Sr, Nd) characteristics of the Xiluvo carbonatite (central-western Mozambique) Mineralogy and Petrology, 80 (3) 201-213 doi:10.1007/s00710-003-0027-z | Journal (article/letter/editorial) | | carbonatites and nearby carbonatites of similar age in Malawi indicate very similar sources, characterized by...with particular reference to the carbonatites of Malawi and Zimbabwe. Geological setting and age of the...Province, best known in Malawi (Fig. 1a). According to the Geological Map of Malawi (1:1,000,000; Bloomfield...bt mica; mt spinel; Kfeld alkali feldspar; cc calcite; ap apatite; mtl mantle; int interstitial; mic...carbonatites being composed of autallotriomorphic calcite and widely variable amounts of apatite, magnetite |  | Broom-Fendley, Sam, Brady, Aoife E., Wall, Frances, Gunn, Gus, Dawes, William (2017) REE minerals at the Songwe Hill carbonatite, Malawi: HREE-enrichment in late-stage apatite. Ore Geology Reviews, 81. 23-41 doi:10.1016/j.oregeorev.2016.10.019 | Journal (article/letter/editorial) | | REE minerals at the Songwe Hill carbonatite, Malawi: HREE-enrichment in late-stage apatite Sam Broom-Fendley...Ap-1 are typical of apatite found in fenite and calcite-carbonatite, Ap-2, -3 and -4 are texturally atypical...carbonatite-related HREE enrichment are known (e.g. Kangankunde, Malawi; Khibiny, Russia; Deadhorse Creek, Canada; Huanglongpu...REE-bearing minerals at the Songwe Hill carbonatite, Malawi, were investigated with the objective of understanding...Songwe Hill carbonatite is located in south-eastern Malawi, near the Mozambique border, and is part of the |  | | Book | | Source in a Weathered Basement Aquifer in Central Malawi: Human Health and Policy Implications Reprinted...CaCO3 is present in three different forms, i.e., calcite, aragonite, and vaterite [20]. Due to its biocompatible...these three polymorphs, calcite is thermodynamically most stable [21]. Calcite is the most stable polymorph...simultaneous impeding the nucleation and growth of calcite crystal. While another study carried by a group...alteration of surface charge, inhibition of calcite nucleation, and calcite poisoning model [21]. As an adsorbent |  | | Journal (article/letter/editorial) | | Aegirine and Associated Minerals from Mount Malosa, Malawi, B. Cairncross, 31-37 Africa, azurite, 4043; classic...named after South Africans, 48-53; Mount Malosa, Malawi, 31-37; Rhodes/rhodesite,50-53; Tsumeb, 18-24;...Nigeria, 110 Aragonite, Tsumeb, 21 Arfvedsonite, Malawi, 36 Arsenogoyazite, New Mexico, 301 Art, see Robinson...Aegirine and Associated Minerals from Mount Malosa, Malawi, 3 1-37; Spectacular Minerals from the Kalahari...Africa, 94-107; see Who's Who in Mineral Names Calcite, Colorado, 165; Kalahari manganese field, South |  | Berke, Melissa A., Johnson, Thomas C., Werne, Josef P., Schouten, Stefan, Sinninghe Damsté, Jaap S. (2012) A mid-Holocene thermal maximum at the end of the African Humid Period. Earth and Planetary Science Letters, 351. 95-104 doi:10.1016/j.epsl.2012.07.008 | Journal (article/letter/editorial) | | other East African temperature records from Lakes Malawi and Tanganyika, as well as Mt. Kilimanjaro. Additionally...with modern temperatures of Lakes Tanganyika and Malawi. We suggest that the thermal response at the end...temperature rises to an annual maximum over Lakes Malawi and Tanganyika and a secondary maximum over Lake...applied to several African lake systems, such as Malawi and Tanganyika, and shown to record known climate...Kilimanjaro LT9414FC 0 15km 3°00’N 10m contours L. Malawi 20°S LT84-2P South Basin 2°30’N 0° 40°E 36°00’E |  | Elliott, H.A.L., Wall, F., Chakhmouradian, A.R., Siegfried, P.R., Dahlgren, S., Weatherley, S., Finch, A.A., Marks, M.A.W., Dowman, E., Deady, E. (2018) Fenites associated with carbonatite complexes: A review. Ore Geology Reviews, 93. 38-59 doi:10.1016/j.oregeorev.2017.12.003 | Journal (article/letter/editorial) | | abundant carbonate 7 141 mineral present e.g. calcite carbonatite, dolomite carbonatite, ankerite carbonatite...1981; Woolley and Kempe, 1989) including 148 calcite, dolomite, ankerite, siderite and magnesite (Woolley...central core 192 of Neoproterozoic (578 ± 24 Ma) calcite carbonatite and alkaline intrusions of the 193...330 types based upon their study of Songwe Hill, Malawi. The first type is a feldspathic 331 breccia...Maijer, 2005), Kangankunde and Chilwa Island, 341 Malawi (Woolley, 1969); Homa Mountain, Kenya (Clarke and |  | Broom-Fendley, Sam, Styles, Mike T., Appleton, J. Don, Gunn, Gus, Wall, Frances (2016) Evidence for dissolution-reprecipitation of apatite and preferential LREE mobility in carbonatite-derived late-stage hydrothermal processes. American Mineralogist, 101 (3) 596-611 doi:10.2138/am-2016-5502ccby | Journal (article/letter/editorial) | | carbonatite complexes in the Chilwa Alkaline Province, Malawi, contain late-stage, apatite-rich lithologies termed...complexes at Tundulu, Kangankunde, and Songwe, Malawi; Sukulu, Uganda; and Juquiá, Brazil (Ngwenya 1994;...of alkaline rocks and carbonatites in southern Malawi and Mozambique (Garson 1965; Woolley 2001). They...Zomba, and 25 km NNE of Phalombe, close to the Malawi-Mozambique border (Fig. 1). It comprises three...1962; Fig. 1). The first ring structure comprises calcite carbonatite, with varying proportions of subordinate |  | Neave, David A., Black, Martin, Riley, Teal R., Gibson, Sally A., Ferrier, Graham, Wall, Frances, Broom-Fendley, Sam (2016) On the Feasibility of Imaging Carbonatite-Hosted Rare Earth Element Deposits Using Remote Sensing. Economic Geology, 111 (3) 641-665 doi:10.2113/econgeo.111.3.641 | Journal (article/letter/editorial) | | HySpex hyperspectral imaging system. 84 69 Calcite Dolomite 43 Fe-dolomite Reflectance (%) − offset...in Canada, Kangankunde, Tundulu, and Songwe in Malawi, Fen in Norway, Jacupiranga in Brazil, Kaiserstuhl...Uganda, Chilwa Island and 643 Kangankunde in Malawi, Mountain Pass in the United States, Panda Hill...fluorocarbonates, Bast = bastnäsite, Bt = barite, Cal = calcite, Fl = fluorite, Haung = huanghoite, Mag = magnetite...located within the Chilwa alkaline province of Malawi (Garson, CR-01 NHM 1996,P4(20)2 Disseminated Bayan |  | Wall, F., Niku-Paavola, V. N., Storey, C., Muller, A., Jeffries, T. (2008) XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY LOW LREE:HREE RATIO IN CARBONATITE, AND THE FIRST DATING OF XENOTIME OVERGROWTHS ON ZIRCON. The Canadian Mineralogist, 46 (4) 861-877 doi:10.3749/canmin.46.4.861 | Journal (article/letter/editorial) | | carbonatite dykes. It mantles and replaces zircon in calcite carbonatite and also occurs as aggregates in ankerite...and synchysite-(Ce) in highly oxidized iron-rich calcite carbonatites. The paragenetic sequence places the...rocks associated with carbonatite at Kangankunde, Malawi (Wall & Mariano 1996). However at Lofdal, Namibia...xenotime-(Y) is a common accessory mineral in the calcite carbonatite dykes. In this paper, we publish a...fourteen dykes studied in some detail so far are calcite carbonatite; some are magnetite-rich, whereas others |  | | Journal (article/letter/editorial) | | in fenite around the Chilwa Island Carbonatite, Malawi EMMA DOWMAN1,2,3,*, FRANCES WALL2,3, PETER J. TRELOAR1...during carbonatite emplacement at Chilwa Island, Malawi. The first alkaline fluids formed the main fenite...examples are present, with 2-phase the most abundant. Calcite, nahcolite, burbankite and baryte were found in...Ngualla, Tanzania; Saint-Honoré, Canada; Songwe Hill, Malawi; and Lofdal, Namibia have high enough concentrations...bastnäsite-(Ce). Fenite at the Songwe carbonatite complex in Malawi has also been identified as HREE-enriched, including |  | | Journal (article/letter/editorial) | | The Kayelekera uranium deposit, Northern Malawi: past exploration activities, economic geology and decay...Board on the Kayelekera uranium deposit in Northern Malawi between 1983 and 1991. This is one of the largest...enrichment. Keywords: Uranium, Karoo, Sandstone, Malawi, Decay series disequilibrium Introduction The...the town of Karonga in the far north of Malawi (Fig. 1). Malawi is a relatively small landlocked country...which some 24 000 km2 is occupied by Lake Malawi. Lake Malawi, with a surface elevation of y450 m above |  | | Journal (article/letter/editorial) | | (the USA, China, Mongolia, Vietnam, Afghanistan, Malawi, and elsewhere). These have high concentrations...complex REE group: Mountain Pass, USA; Kangankunda, Malawi; Kalkfeld, Ondakorume, and Okurusu, Namibia; and...Mountain Pass, USA (Olson et al., 1954) Kangankunda, Malawi (Tattov, 1969) Kalkfeld, Namibia (Verwoerd, 1966)...the BaCO3SrCO3-CaCO3 triangle: 1) witherite; 2) calcite; 3) strontianite; 4) baritocalcite (Ca, Ba) (CO3)2...fluorite, REE-apatite, magnetite, siderite, hematite, calcite, quartz, albite, potash feldspar, phlogopite, aegirine |  | | Journal (article/letter/editorial) | | on the evolution of the Karoo graben of northern Malawi (East Africa) Received: 21 November 1994 / Accepted:...kinematic study of the Karoo deposits of northern Malawi are reported. The objective of the lithostratigraphic...correlate the deposits of the Karoo basins of northern Malawi with the well-known deposits of southern Tanzania...horizontal extension across the Karoo graben of northern Malawi. Riedel structures in the fault zones formed within...overall deformation during Karoo rifting in northern Malawi is interpreted to be close to a coaxial deformation |  | Denys, Christiane, Otero, Olga, Kullmer, Ottmar, Sandrock, Oliver, Bromage, Timothy G., Schrenk, Friedemann, Dauphin, Yannicke (2020) Biominerals Fossilisation: Fish Bone Diagenesis in Plio–Pleistocene African Hominid Sites of Malawi. Minerals, 10 (12) 1049 doi:10.3390/min10121049 | Journal (article/letter/editorial) | | Diagenesis in Plio–Pleistocene African Hominid Sites of Malawi Christiane Denys 1, * , Olga Otero 2 , Ottmar Kullmer...Pliocene–Pleistocene Chiwondo Beds adjacent to Lake Malawi. Optical and scanning electron microscope (SEM)...in the Karonga District of the Northern Region, Malawi, combine an area of about 70 km North–South Karonga...Karonga District of the Northern Region, Malawi, combine an area of about 70 km North–South and and 10...northern of Malawi. Note that Malema (not Figure 1. thethe main location in the part ofpart Malawi. Note that |  | | Journal (article/letter/editorial) | | contemporaneous with the Chilwa province of neighbouring Malawi and the Lower Zambezi, Mozambique ( 135-110 Ma...silicification, with later cross-cutting veins of quartz-calcite-barite, were given in Bailey (1960, 1966). A closely...the classic Chilwa Island sub-volcanic complex, Malawi (Garson, 1966). To complete the synopsis ofthe...ascends from the mantle. Early precipitation of calcite from the rising magma leaves a sovite mush in its...Evidence is emerging of magnesiocarbonatite with calcite phenocrysts (Ngwenya and Bailey, 1990) which would |  | | Report (chapter) | | re-established by Saether (1957), demonstrated that calcite-rich rocks could have all the characteristics of...metasomatic products of fenitization and that the calcite-rich carbonatite was the residue of the intrusive...carbonatites in Africa. Garson re-investigated the Malawi complexes of Chilwa, Tundulu, Kangankunde, Songwe...carbonate minerals. If the carbonate is calcite, the rock is a calcite carbonatite which is called a s6vite...alvikite, which typically has a texture of small calcite rhombs packed together and is enriched in incompatible |
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Ngabu, Chikwawa, Southern Region, Malawi