 | 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) | | geochemistry and geochronology of the Songwe Hill carbonatite, Malawi Article in Journal of African Earth Sciences...are also working on these related projects: Carbonatite and alkaline volcanism in Italy and elsewhere...geochemistry and geochronology of the Songwe Hill carbonatite, Malawi Sam Broom-Fendley a, *, Aoife E. Brady...through three different carbonatite compositions (C1eC3). Early C1 carbonatite is scarce and is composed...composed of mediumecoarse-grained calcite carbonatite containing zircons with a UePb age of 132.9 ± 6.7 Ma |  | | Journal (article/letter/editorial) | | volcanic carbonatites. K EY WORDS : Angola, carbonatite, zonation in pyrochlore, fluorine, high field strength...mineralization is associated with the early stages of carbonatite activity and carbonatites are commonly rich in...or enrichment in Nb is a good criterion for carbonatite identification. Niobium is usually concentrated...concentrated in intermediate pulses of carbonatite activity (Kapustin, 1980). Pyrochlore-group mineral concentrates...from carbonatites. They are found in nearly all carbonatite types, at least in accessory amounts. Their chemical |  | | Journal (article/letter/editorial) | | Genesis of the Khaluta alkaline-basic Ba-Sr carbonatite complex (West Transbaikala, Russia) Anna G. Doroshkevich...# Springer-Verlag 2009 Abstract The Khaluta carbonatite complex comprizes fenites, alkaline syenites...inclusion measurements for the silicate rocks and carbonatite all give temperatures of crystallization of 915–1...with formation of the sulphate minerals baryte, celestine and baryte-celestine. Thus, the characteristic...findings suggest that the mantle source for Khaluta carbonatite and associated rocks, as well as for other carbonatites |  | | Journal (article/letter/editorial) | | abundant carbonatite outcrops in the Cape Verde Islands. A field survey of the main outcrops has shown...carbonatites, carbonatite dykes and small apophyses of intrusive carbonatite. These outcrops are spatially...nephelinite crystallization and high-temperature carbonatite immiscibility. The carbonatitic melts crystallized...1993). São Vicente has the greatest number of carbonatite exposures (Gerlach et al., 1988), including calcitic...they must also be studied to fully understand carbonatite genesis. In this work we present field, petrographic |  | WOOLLEY, A. R., BARR, M. W. C., DIN, V. K., JONES, G. C., WALL, F., WILLIAMS, C. T. (1991) Extrusive Carbonatites from the Uyaynah Area, United Arab Emirates. Journal of Petrology, 32 (6) 1143-1167 doi:10.1093/petrology/32.6.1143 | Journal (article/letter/editorial) | | metamorphism but otherwise the primary igneous carbonatite mineralogy remains. One distinct group of rocks...amphibole and biotite. Niobian titanite, strontian baryte, and albite are also present, and rare earth elements...wt.%) and P 2 O 5 (average > 7 wt.%). The two carbonatite groups are considered to be related magmatically...mountain chain. Within these metamorphic rocks carbonatite outcrops are largely restricted to the mountainous...quartzite Uyaynah Window H i l l Type 1 carbonatite | £ | Type 2 carbonatite E';X;j Other metamorphlc rocks |  | | Journal (article/letter/editorial) | | Nb and REE Distribution in the Monte Verde Carbonatite–Alkaline–Agpaitic Complex (Angola) Sandra Amores-Casals... Abstract: The Angolan alkaline–carbonatite complex of Monte Verde has a semi-circular shape...arranged minor bodies of other alkaline rocks and carbonatite magmatic breccias. This rock association is hosted...are concentrated in pyrochlore crystals in the carbonatite and alkaline breccias. Magmatic fluornatropyrochlore...crystallize as late minor secondary minerals into carbonatite breccia and alkaline dykes. In conclusion, the |  | | Corporate Document | | .............. 30 7.2 Geology of the Songwe Carbonatite Vent ............................................................................ 32 7.2.1 Carbonatite ....................................................................... 33 7.2.1.1 Calcite carbonatite........................................................................ 33 7.2.1.2 Fe-rich carbonatite ...............................................Report – 22 November 2012 Page: i 7.3 7.2.3.2 Carbonatite-rich breccia ............................... |  | | Journal (article/letter/editorial) | | Cr-rich magnetite and graphite coexist with carbonatite minerals and precipitated from carbonate magma...PTconditions. Mineral geothermometers for the Newania carbonatite give temperatures from 463 to 950°C. The parental...ripp@gin.bscnet.ru Introduction The Newania carbonatite complex is situated 40 km east of Udaipur, within...Mineralization is also associated with the Newania carbonatite in the form of disseminated, uraniferous pyrochlore...described the geology and petrography of the carbonatite outcrops, and Viladkar and Wimmenauer (1986) and |  | Casillas, Ramón, Demény, Attila, Nagy, Géza, Ahijado, Agustina, Fernández, Carlos (2011) Metacarbonatites in the Basal Complex of Fuerteventura (Canary Islands) The role of fluid/rock interactions during contact metamorphism and anatexis. Lithos, 125 (1) 503-520 doi:10.1016/j.lithos.2011.03.007 | Journal (article/letter/editorial) | | melteigites, ijolites, alkaline gabbros, syenites and carbonatite dykes cut by a basaltic dyke swarm. A later basaltic...in the contact-metamorphosed silicate rocks. Carbonatite dykes have been found in the metamorphic aureole...metasomatism and caused Sr, Ba and S enrichment in the carbonatite. As a result, alkali elements such as K, Na,...criteria should be used to recognise metacarbonatite outcrops in terrains that have undergone severe metamorphism...and Höy (1989) described some metacarbonatite outcrops included in terrains that have undergone greenschist |  | | Journal (article/letter/editorial) | | during a brief inspection of carbonatite occurrences. At Galapo the carbonatite exposures were very puzzling...carbonatites, i.e. from extrusive carbonatite tufts or carbonatite (c) Copyright the Mineralogical Society...several Pleistocene-Recent nephelinite-tuff/carbonatite volcanoes situated near the Eastern (Gregory)...stratiform magnetites (§ and associated nephelinite/carbonatite volcanoes (underlined) in Tanzania and Kenya...of this group there is a remarkable 'bedded carbonatite' extending for some I5oo m in an east-west direction |  | | Book (volume) | | APACHECOUNTY, ARIZONA M. F. Roden and D. Smith 2•E OKA CARBONATITE CO•PLEX: R•GNETI2• COF•OSITIONS AND 'iHE RELATED...1000øC and would suggest that in this temperature region the geotherms for areas of different surface heat...identified in diamonds (Chrenko et al., 1967). region A cloud-like in a diamond from Arkansas appeared...quadrilaterial (Fig. 4) this inclusion plots close to the region of omphacitic pyroxene, but is distinct from them...available but at present serve to indicate the general region in which crystallization may have occurred. type |  | | Journal (volume) | | of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...History of mineralogy: The role of the Carpathian region in the 18th century..............................investigation of redox processes. For Fe, the pre-edge region provides an almost direct way of quantifying the...Munella region (Albania) in improving the fertility features of a sandy soil from Divjaka region (Albania)...tested as fertilizers for the sandy soils of Divjaka region (Central-western Albania). The experiment was realized |
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