 | | Journal (article/letter/editorial) | | Mineralization in the Ambohimirahavavy Alkaline Complex, Madagascar Guillaume Estrade,1 Stefano Salvi,1,† Didier...Cenozoic Ambohimirahavavy alkaline complex in Madagascar consists of several syenitic to granitic intrusions...intrusions (24.2 ± 0.6 Ma) the largest of which, the Ampasibitika intrusion, is characterized by the presence...strength element (HFSE)-rich phases consist mainly of zircon, bastnäsite-(Ce), and Ca-REE-, and Ca-HFSE-rich...the main HFSE-rich phases are bastnäsite-(Ce), zircon, pyrochlore, Nb-rich titanite, and an unidentified |  | Ram, Rahul, Becker, Megan, Brugger, Joël, Etschmann, Barbara, Burcher-Jones, Cody, Howard, Daryl, Kooyman, Patricia J., Petersen, Jochen (2019) Characterisation of a rare earth element- and zirconium-bearing ion-adsorption clay deposit in Madagascar. Chemical Geology, 522. 93-107 doi:10.1016/j.chemgeo.2019.05.011 | Journal (article/letter/editorial) | | element (REE)-bearing ionadsorption clay deposit in Madagascar Rahul Ram, Megan Becker, Joël Brugger, Barbara...(REE)-bearing ion-adsorption clay deposit in Madagascar, Chemical Geology, https://doi.org/10.1016/j...(REE)-bearing ion-adsorption SC RI PT clay deposit in Madagascar Rahul Rama,b,c*, Megan Beckerb,d, Joël Bruggerc*...Ambohimirahavavy igneous complex (Ampasibitika intrusion) in Madagascar hosts a world-class rare-earth element...profiles developing on acid rocks, including in Madagascar. Ce-LIII edge ED XANES spectroscopy shows that |  | | Thesis/Dissertation | | Aux fokonolona des villages d’Ambodimadiro, Ampasibitika, Ambaliha, Befitina, Beraty, Tsarabanja pour... 5 Figure 2 : Les ensembles volcaniques de Madagascar …………………………………. 7 Figure 3 : Situation géologique...Figure 30 : Diagramme de corrélation entre Zr du zircon et Nb du pyrochlore …….. 127 Figure 31 : Spectres...Xe: Xénotime Yprc: Yttriopyrochlore Zr : Zircon Zr à Th: Zircon à thorite viii SOMMAIRE INTRODUCTION...Au Cénozoïque, la couverture sédimentaire de Madagascar est traversée par d’importantes manifestations |  | | Journal (article/letter/editorial) | | zirconium and cerium in rockallite. The amount of zircon in the rock is far too small to account for the...fasibitikite (segirine-riebeckitegranite) of Madagascar,1 which approaches rockallite in composition...especially to the occurrence of Ampasibitika, North-West Madagascar, and to that of Ota, near Evisa,... The Geology and Petrograplcy of Roclcall. 23 zircon and eucolite. The mesocratic type has been called...asgirine. The latter mesocratic parts contain abundant zircon and eucolite, which is ceriferous. In the definition |  | | Journal (article/letter/editorial) | | microperthite . . . Biebeckite JSgirine . . . /Zircon \ ACCESSORY MINERALS . 32 \ Microcline/ Orthoclase...inclusions of quartz and felspar, minute prisms of zircon, and small grains of ilmenite(?) break up the continuity..., showing that the segirine is not quite pure. Zircon is present in extremely minute ciystals which are...in the case of rockallite 2 the total amount of zircon present is manifestly insufficient to account for...quartz to felspar. Norm. Quartz Orthoclase Albite Zircon Analysts. 74-66 Si Oa • AlaO3 . 8-85 FesOs . |  | | Journal (article/letter/editorial) | | properties correspond to those given above. Zircon. Zircon occurs as fine crystals adjacent to the black...46 1.47 0.08 n.d. 100.00 NORMS Apatite Ilmenite Zircon Orthoclase Albite Anorthite Corundum Acmite Sodium...conia and samples of granite from the Ampasibitika area of Madagascar contained from 0.50 to 3.71/s zirconia...zirconia-rich rocks from British Columbia, Rockall, and Madagascar are rich in riebeckite and aegirine, acmite,...the Madagascar granites was attributed by Lacroix (1903, p. 236) to the presenceof abundant zircon. Since |  | | Journal (article/letter/editorial) | | with occasional clusters of brown mi'a and brown zircon~. The chilled yenite is fine-graincd at the contact... p. 243. No. 3. DOfl\it, Madagascar, LACROIX, A. Mineralogie de Madagascar 3, 1923. p. 328. No. 4. Kjelsasite...24 Ofo. Lepidomelane 6 Ofo. Ore quartz, apatite, zircon, sphene, 5 Ofo. TROGER, 1935, voIOfo). The calcium...quartz; 3% aegirine-augite; 2% sphene; apatite, ore, zircon; TR0GER, 1935, vol. %.), and umptekite (84% fe...and analeite. Plagioclase feldspar, quartz and zircon are absent. Of the mafic minerals arfvedsonite |  | | Journal (issue) | | n e of the stones has an enclosure of a rounded zircon, while the other contains numerous a n d cuneiformed...Table, page 265). Examples of this are the two gems zircon< 3) and ekanite ( 6 , 7 ) ; in these cases the...transparent scapolites from Mozambique a n d Madagascar. It is interesting to compare their results with...one from Madagascar a n d one from an unknown locality. Those from Mozambique a n d Madagascar are described... 6 1-3821 1-3655 8 26 1-1602 11193 10349 Madagascar Bank a n d N u b e r 1970 I d obs* 609 4-422 |  | | Book | | 1890 of magnetite, apatite, pleochroic halos zircon near as the are very well of microscopic...microscopic dimensions village of Vredefort. zircon was 58, p, ) the developed collected 189. 1 by one...occurs macro- composed and grains in all and zircon in the apatite ; appear cluster is only occurs...Plump short prisms of and (110) perfect zonal zircon bounded present in varying are parallel structure...is found crystallized however, sphene, as zircon and felspars apatite ; aegirine, and then it |  | | Book (volume) | | dans cavité sans forme géométrique. Quartz de Madagascar. (P/tolographie, grossissement de diamètres.)...seul liquide dans cristaux négatifs. Quartz de Madagascar. {Photographie, grossissement de f^5 diamètres...Vénus voir la figure à rutile), de tourmaline (Madagascar), d’épidote, d’aeti: note ou de trémolite (quand...123, 1892) des cristaux de quartz (notamment de Madagascar), dans lesquels la structure de raméthyste (niacle...de cristaux d’orthose; ils ceux d’Alençon. Madagascar. —H est probable qu’une partie au moins du |  | | Book | | minerals. For example, most granites have magnetite, zircon, apatite, ilmenite, titanite, and many others....also are represented: Brazil, Ecuador, Hawaii, Madagascar, Mexico, Peru; Armoricans, Australian aborigines...fine-grained or glassy groundmass. [Ampasimena, Madagascar) (Lacroix in 1922) ampelite sed. Black carbonaceous...ilmenite-magnetite make up 30%. [Anabohitsy, Madagascar] (Lacroix in 1914) anagenite sed. Conglomerate...titanaugite, labradorite, and others. [ Ankaramy, Madagascar) (Lacroix in 1916) ankaranandite ig., meta.? |  | | Book (volume) | | 1910; 5, 1913; Paris. (1922-1923). Mineralogie de Madagascar. 3 volumes: vols. 1, 2, 1922; 3, 1923; Paris...field, Auckland. placers on the east coast of Madagascar from north of Fenerive south to the neighborhood...accessory mineral in pegmatite veins; The most in Madagascar, as cleavable masses from a lithic pegmatite...chrome-diopside, chlorite, biotite; less certainly zircon, oh vine, phlogopite, quartz." Var. Bort. Boort...quartz, kyanite, tourmaline, lazulite, gold, garnet, zircon, euclase, and topaz are Other Brazilian localities |  | | Book | | olivine, opaque minerals, accessory minerals (e.g. zircon, apatite, titanite), epidote, allanite, garnet...potassium richterite. Zirconium silicates (wadeite, zircon, kimzeyitic garnet, Ca-Zr-silicate) may occur as...eudialyte, rather than simple minerals such as zircon and ilmenite. Field 8 (monzonite) — many so-called...after people Czech Republic Sweden from Latin Madagascar Australia Portugal South Africa 81 77 76 69...but no clinopyroxene; titanomagnetite, apatite, zircon and titanite are common. (Defant & Drummond, 1990 |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | has been disrupted by ionizing radiation, (e.g., zircon) and (3) certain naturally occurring liquids (H...Mineralogical Magazine A. LaCroix, Mineralogie de Madagascar, 1922 P. Embry and Fuller Manual of New Mineral...Brazil, and Czech Republic; minor deposits in Madagascar, Turkey, Romania, Germany, Austria, and Sri Lanka...Llallagua, Biggenden mine, Q, Australia; Fefena, Madagascar; P&J:92, R:710, other localities in Bolivia....near Oberon, NSW, Australia; Amparindravato, Madagascar. BM DI:445, R:778, P&J:131, ABI:110. 3.5.9.2 |  | | Report (issue) | | the results and Zr03 if it contains considerable zircon or eudialyte. of calculation, but it is to be deplored;...analyses of a series show evident eudialyte, .or zircon, and in alkalic, especially sodic, signs of error...Abyssinia. British East Africa. Genuan East Africa. Madagascar (Reunion). Rhodesia. Transvaal. Natal. Cape Colony...Lacroix, A., Materiaux pour la Mineralogie de Madagascar, Nouv. Arch. du Museum, Paris; I, (4), IV,. 1902...titanite. wo ......... wollastonite. Z ............ zircon. MISCELLANEOUS. bet ......... between. cor ... |
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Ampasibitika, Antsirabe, Ambanja, Diana, Madagascar