 | | Journal (article/letter/editorial) | | of Mount Malosa, Zomba District, Malawi Alessandro Guastoni & Federico Pezzotta The Zomba-Malosa pluton...These pegmatites outcrop close to the summit of Mount Malosa (-2000 m.a.s.l.) and they are subhorizontal...X-ray diffraction performed on aegirines from Mount Malosa collected in the cavities indicated that the...quartz crystals from miarolitic cavities of Mount Malosa estimated entrapment pressure at 130 MPa (Zajacz...1990). The more common substitutions observed at Mount Malosa are goethite + albite after parisite, quartz |  | Soman, Aneesh, Geisler, Thorsten, Tomaschek, Frank, Grange, Marion, Berndt, Jasper (2010) Alteration of crystalline zircon solid solutions: a case study on zircon from an alkaline pegmatite from Zomba–Malosa, Malawi. Contributions to Mineralogy and Petrology, 160 (6) 909-930 doi:10.1007/s00410-010-0514-2 | Journal (article/letter/editorial) | | on zircon from an alkaline pegmatite from Zomba–Malosa, Malawi Aneesh Soman • Thorsten Geisler • Frank...pegmatite from the Zomba–Malosa Complex of the Chilwa Alkaline Province in Malawi has been studied by...trace elements, numerous pores, and inclusions of thorite, ytttrialite, and fergusonite. Zircon II contains...alteration event. Electron microprobe dating of thorite inclusions in zircon II yielded a Th–U-total Pb...solution-aqueous solution systems. Keywords Zircon Thorite Malawi Hydrothermal alteration Interface-coupled |  | Chakrabarty, A., Mitchell, R. H., Ren, M., Sen, A. K., Pruseth, K. L. (2013) Rinkite, cerianite-(Ce), and hingganite-(Ce) in syenite gneisses from the Sushina Hill Complex, India: occurrence, compositional data and petrogenetic significance. Mineralogical Magazine, 77 (8) 3137-3153 doi:10.1180/minmag.2013.077.8.08 | Journal (article/letter/editorial) | | rocks are rinkite, cerianite-(Ce), and cerian thorite. Rinkite, formed at the ortho-magmatic stage predates...gneisses are represented mainly by rinkite, cerian thorite and ancylite (Mitchell and Chakrabarty, 2012)....minor late-stage eastonitic biotite and accessory thorite, unidentified Mn-Fe oxides and hingganite-(Ce) (Chakrabarty...presence of dispersed grains of cerianite and cerian thorite close to the rinkite. 3140 RINKITE, CERIANITE-(CE)...pectolite-serandite (Fig. 5). Small rounded crystals of cerian thorite are also present in association with the cerianite-(Ce) |  | Macdonald, Ray, Bagiński, Bogusław, Kartashov, Pavel M., Zozulya, Dmitry, Dzierżanowski, Piotr, Jokubauskas, Petras (2015) Hydrothermal alteration of a chevkinite-group mineral to a bastnäsite-(Ce)-ilmenite- columbite-(Fe) assemblage: interaction with a F-, CO2-rich fluid. Mineralogy and Petrology, 109 (6) 659-678 doi:10.1007/s00710-015-0394-2 | Journal (article/letter/editorial) | | syenitic pegmatite from the Vishnevye Mountains, Urals Region, Russia. The progressive alteration of the chevkinite...granites and syenites of the Graciosa Province, southern Brazil, Vlach and Gualda (2007) documented increases...(Cherry) Mountains, Chelyabinsk Oblast’, southern Urals, Urals Region, Russia. The specimen (K4) comes from...is not known whether the ThSiO4 phase in K4 is thorite (tetragonal) or its dimorph huttonite (monoclinic)...shown in Fig. 4b comprises an oscillatory zoned region overprinted by a darker (lower Z) phase. The presence |  | | Journal (article/letter/editorial) | | predominantly of coffinite, rare uraninite, and thorite, is accompanied by intense hematitization, albitization...Uraninite is enriched in Th (up to 9.8 wt % ThO2 ) and thorite is enriched in Zr (up to 5.7 wt % ZrO2 ). The REE-elements...mineralization; aceite; coffinite; uraninite; thorite; synchysite; mineralogy; geochemistry; Bohemian...Blatnásuite suiteoccurs occursininthe thesouthern southern and southwestern margin granodiorites and southwestern...occurring in the southern and southwestern the Central Bohemian plutonic complex. The in the southern and southwestern |  | | Journal (article/letter/editorial) | | al. 2009) contains one spectrum of zircon from Malawi. No chemical data are available for these 927 ...levels for U4+ and U5+ in zircon, hafnon, and thorite. Their strongest absorption bands for U4+ were...including optical absorption. Their sample from Mt. Malosa, which was notably reported to be metamict, showed...long), North Burgess (crystal ~1.5 cm long), Mt Malosa (rock with abundant clusters of small crystals...of kainosite from Long Lake and zircon from Mt. Malosa comprised smaller crystals on larger hand samples |  | | Journal (article/letter/editorial) | | coarse corundum in some dikes, muscovite, zircon, thorite, strontian epidote, aeschynite-(Ce), betafite,...Borborema belt in Brazil, and in the Pala District of southern California. The spatial association with calc-alkaline...Consider the Chilwa alkaline province, in southern Malawi, of Cretaceous age. What makes it unusual,...largest plutons in the Chilwa Province (e.g., the Zomba–Malosa pluton) consist of syenite and peralkaline granite...the bodies of NYF pegmatite that occur at Mount Malosa in Malawi, associated with the classic A-type granite |  | | Journal (issue) | | Baranda Some pegmatite minerals from the Zomba district, Malawi .........................................all over the world converged on one geo graphic region for such an event. It changed the course of a nation...Mountain, was discovered by four men from the southern U.S. in 1858. While sinking a shaft in 1859, the...and HORTON, F. W. (1940) Mines of the southern Mother Lode Region; Part II—Tuolumne and Mariposa Counties...INTRODUCTION The Horcajo mines are located at the southern limit of Ciudad Real Province, Spain, approximately |  | | Journal (article/letter/editorial) | | Ethiopia) and the Tantalite Valley pegmatites (southern Namibia) and Large compositional variations...g., in the Lugulu (Lulingu) district along the southern margin of the Kasese batholith in South Kivu (de...mineral supply chain due-diligence initiatives in the region and at the Ta (and Sn) smelter level, combined...2012). Ethiopia Tantalum-bearing pegmatites in southern Ethiopia were discovered in the 1980s by an Ethiopean-Soviet...Figure 2a). Uranium-lead ages obtained for CGM from southern Ghana indicate pegmatite formation at 2073 to |  | | Book | | in most of the placer deposits of eastern and southern Indian coasts. Monazite resource of 12.45 million...very low-grade Yttrium ore. The carbonatites of southern India offer scope for exploration of REE, dominated...speculated by AMD from Siwana ring complex. In southern India, peraluminous to peralkaline Kanigiri granite... fergusonite, samarskite, allanite, monazite, thorite, bastnaesite and hydroxyl-bastnaesite in Kanigiri...Panchmahal District, Gujarat . . . . . . . . . 3.6 Southern India . . . . . . . . . . . . . . . . . . . . |  | | Book | | localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...(Chamberlain and Robinson, 2013). MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the...discoveries in the famous alkaline pegmatites of Mount Malosa in the late 2000s include specimens showing...in Switzerland, it is only in the Maderanertal region of east-central Canton Uri that clefts bearing...clefts are found fairly commonly throughout this region, such that only a handful of notable finds during |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Arabian-Nubian Shield and the Tantalite Valley pegmatites (southern Namibia). Large compositional variations through...1984) fold belt that extends into the Kibali-Ituri region of North Kivu (2.2 on Fig. 1; Fig. 2) are crosscut...until the 1950s. Current mining activities in the region are, 17 Melcher et al. ACCEPTED MANUSCRIPT...Archean-Paleoproterozoic transition zone at the southern margin of the Congo Craton include MA complexly...Uganda via Rwanda and Burundi into the Katanga region of the DRC towards the Angola-Zambia-DRC border |  | | Book | | named Monteregie is now the current name of the region. he name Mont Saint-Hilaire is used interchangeably...what is now the Richelieu River and Lake Champlain region, Samuel de Champlain first named the mountain Mont...protecting the only remaining primeval forest in the region. THE EARLY SCIENTIFIC INVESTIGATIONS T he earliest...research of other alkaline systems, most notably in southern Norway and southeastern Asia (Thailand, Cambodia)...there are numerous dikes, sills, and plugs in the region related to and coeval with Monteregian plutonic |
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