 | Menezes Filho, L. A. D., Atencio, D., Andrade, M. B., Downs, R. T., Chaves, M. L. S. C., Romano, A. W., Scholz, R., Persiano, A. I. C. (2015) Pauloabibite, trigonal NaNbO3, isostructural with ilmenite, from the Jacupiranga carbonatite, Cajati, Sao Paulo, Brazil. American Mineralogist, 100 (2) 442-446 doi:10.2138/am-2015-4745 | Journal (article/letter/editorial) | | isostructural with ilmenite, from the Jacupiranga carbonatite, Cajati, São Paulo, Brazil Luiz A.D. Menezes Filho1...Gerais, Brazil 2 Instituto de Geociências, Universidade de São Paulo, Rua do Lago 562, 05508-080, São Paulo...Paulo, São Paulo, Brazil 3 Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369...369, 13560-970, São Carlos, São Paulo, Brazil 4 Department of Geosciences, University of Arizona, Tucson...Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil 6 Departamento de Física do Instituto de Ciências |  | Andrade, Marcelo B., Atencio, Daniel, Menezes Filho, Luiz A. D., Spratt, John (2018) Melcherite, trigonal Ba2Na2Mg[Nb6O19]·6H2O, the second natural hexaniobate, from Cajati, São Paulo, Brazil: Description and crystal structure. Mineralogical Magazine, 82 (1) 111-120 doi:10.1180/minmag.2017.081.026 | Journal (article/letter/editorial) | | the second natural hexaniobate, from Cajati, São Paulo, Brazil: Description and crystal structure MARCELO...Science, São Carlos Institute of Physics, University of São Paulo, Caixa Postal 369, 13560-970 São Carlos...Carlos, SP, Brazil Departamento de Mineralogia e Geotectônica, Instituto de Geociências, Universidade de São...São Paulo, Rua do Lago 562, 05508-080 São Paulo, SP, Brazil Instituto de Geociências, Universidade Federal...Gerais, Avenida Antonio Carlos 6627, 31270-901, MG, Brazil. Core Research Laboratories, Natural History Museum |  | | Journal (article/letter/editorial) | | com/locate/lithos Fluid inclusions in apatite from Jacupiranga calcite carbonatites: Evidence for a fluid-stratified...Carbonatites of the Jacupiranga alkaline–carbonatite complex in São Paulo State, Brazil, were used to investigate...carbocernaite, barytocalcite, barite and norsethite, pyrophanite, magnesian siderite and baddeleyite, ancylite(Ce)...carbonatite in the plutonic Jacupiranga Complex in São Paulo State, Brazil, contain fluid inclusions and...Precambrian basement, flanking the Paraná Basin in Brazil (Fig. 1a), is a NNW-elongated intrusive body (Fig |  | Zaccarini, F., Garuti, G., Ortiz-Suarez, A., Carugno-Duran, A. (2004) THE PARAGENESIS OF PYROPHANITE FROM SIERRA DE COMECHINGONES, CORDOBA, ARGENTINA. The Canadian Mineralogist, 42 (1) 155-168 doi:10.2113/gscanmin.42.1.155 | Journal (article/letter/editorial) | | 42, pp. 155-168 (2004) THE PARAGENESIS OF PYROPHANITE FROM SIERRA DE COMECHINGONES, CÓRDOBA, ARGENTINA...Chacacabuco, 5700 San Luis, Argentina ABSTRACT Pyrophanite (MnTiO3) has been discovered for the first time...showing a complex unmixing assemblage composed of pyrophanite, manganoan ilmenite, an aluminous spinel, and...extensive solid-solution among the end-members pyrophanite, ilmenite, and geikielite (MgTiO3). The unmixed...reached a stage of partial melting. Keywords: pyrophanite, magnetite, ilmenite, clintonite, chlorite, Sierra |  | | Journal (article/letter/editorial) | | Abstract Manganoan ilmenite was identified in Juina, Brazil kimberlitic rocks among other megacrysts. It forms...manganoan ilmenite; kimberlite; diamond; Juina; Brazil Introduction Kimberlite/diamond indicator minerals...the Pandrea-3 kimberlite pipe in the Juina area, Brazil (sample Ju-09b, epiclastic kimberlitic tuff). ...from the Pandrea-3 kimberlitic pipe, Juina area, Brazil (wt.%) 0.0 95.0 0.0 5.0 93.42 n.d. n.d....at Pilansberg, South Africa and Pocos de Caldas, Brazil (Mitchell and Liferovich, 2004a,b), and in some |  | | Journal (article/letter/editorial) | | kimberlites. Ilmenite, manganilmenite, and Fe-bearing pyrophanite (22–24 wt % MnO) abundant in the cement of the...FeTiO3, hematite FeFeO3, geikielite MgTiO3, pyrophanite MnTiO3, escolaite CrCrO3, karelianite VVO3, ecandrewsite...ilmenite–hematite, ilmenite–geikielite, and ilmenite–pyrophanite solid solution series. Ilmenite enriched in Mg...crystals of ilmenite, manganilmenite, and rare pyrophanite in kimberlite cement (Frantsesson, 1968; Danchin...frequent. The most recent manganilmenite and pyrophanite occasionally rim perovskite crystals (Pasteris |  | Melluso, L., Srivastava, R. K., Guarino, V., Zanetti, A., Sinha, A. K. (2010) MINERAL COMPOSITIONS AND PETROGENETIC EVOLUTION OF THE ULTRAMAFIC-ALKALINE - CARBONATITIC COMPLEX OF SUNG VALLEY, NORTHEASTERN INDIA. The Canadian Mineralogist, 48 (1) 205-229 doi:10.3749/canmin.48.1.205 | Journal (article/letter/editorial) | | within the range of values found in the Jacupiranga carbonatite (Brazil, TiO2 up to 5.96 wt%, Mitchell 1978...SV56 is high in MnO (11.5 wt%, about 30 mol.% pyrophanite), as is typical of this mineral in evolved syenitic...in the alkaline igneous province of southwestern Brazil (Brotzu et al. 1997, 2005, 2007, and references...in rocks of the Salitre complex, Alto Paranaíba, Brazil. As expected on the basis of previous investigations...strongly alkaline intrusions, such as Jacupiranga and Juquiá, in Brazil (Melcher 1966, Beccaluva et al. 1992 |  | | Journal (article/letter/editorial) | | pp. 1169-1178 (2004) ECANDREWSITE – ZINCIAN PYROPHANITE FROM LUJAVRITE, PILANSBERG ALKALINE COMPLEX,...generations and form a continuous ecandrewsite – pyrophanite solidsolution extending from (Zn0.81Mn0.12Fe0...zincian pyrophanite (Mn0.82–0.34Zn0.50– 0.20Fe0.13–0.06)TiO3. The latest generation is pyrophanite with...showing a compositional evolution toward ferroan pyrophanite. The three generations of Zn–Mn titanates recognized...ecandrewsite – pyrophanite (ZnTiO3 – MnTiO3) solidsolution series. Keywords: ecandrewsite, pyrophanite, solid-solution |  | Melluso, Leone, Guarino, Vincenza, Lustrino, Michele, Morra, Vincenzo, de' Gennaro, Roberto (2017) TheREE-and HFSE-bearing phases in the Itatiaia alkaline complex (Brazil) and geochemical evolution of feldspar-rich felsic melts. Mineralogical Magazine, 81 (2) 217-250 doi:10.1180/minmag.2016.080.122 | Journal (article/letter/editorial) | | HFSE-bearing phases in the Itatiaia alkaline complex (Brazil) and geochemical evolution of feldspar-rich felsic...in the metamorphic rocks of the Serra do Mar, SE Brazil. The nepheline syenites are characterized by assemblages...wöhlerite, hiortdahlite, låvenite), britholite and pyrophanite as the accessory phases. The silica-oversaturated...Cretaceous-Cenozoic alkaline province of southeastern Brazil, which is distributed all around the Paraná Basin...Fig. 1a). The alkaline magmatism in southeastern Brazil spans from ∼132 to ∼58 Ma, with a climax at ∼85–90 |  | | Journal (article/letter/editorial) | | Mineralogist Vol. 44, pp. 1099-1107 (2006) THE PYROPHANITE–GEIKIELITE SOLID-SOLUTION SERIES: CRYSTAL STRUCTURES...Ontario P7B 5E1, Canada ABSTRACT Members of the pyrophanite–geikielite solid-solution series, Mn1–xMgxTiO3...Mg) octahedra, and in common with geikielite, pyrophanite, and ilmenite (sensu lato), the TiO6 octahedra...natural solid-solutions between geikielite and pyrophanite seems to be due to the contrasting geochemistry...than to crystallochemical reasons. Keywords: pyrophanite, geikielite, titanate, order, ilmenite group |  | | Journal (article/letter/editorial) | | JacupirangaComplex,Brazil JosE,C. Gespen Instituto de GeociAncias Universidade de Sao Paulo 56o Paulo, Brazil CEP 05508...carbonatiteplug (five separateintrusions)of the Jacupiranga Complex,in thejacupirangitenearthe contacts,and...schemesummarizedby Le Bas (1977,Fie. Za.l). The Jacupiranga Complex Improved exposuresuncoveredby the quarrying... 961 GASPAR AND WYLLIE: ILMENITE FROM JACUPIRANGA, BRAZIL carbonatiteplug is composednot of two intrusions(Melcher...1967a). Table l. Forms of ilmenite in rocks at Jacupiranga C a r b o ntai t e Discrete crystals Jacupirangite |  | | Journal (article/letter/editorial) | | 1.9 Ilmenite 34.2 34.8 Geikielite 60.2 60.3 Pyrophanite 3.1 2.9 1.6 35.1 60.4 2.9 1.8 35.1 60.1 3.0...other data are given: Field A ilmenites from Jacupiranga carbonatite (Mitchell 1978), FieldB ilmenites...(Mitchell 1973; 1977; Haggerty 1975) and from the Jacupiranga carbonarites (Mitchell 1978). From the kimberlite...both the Jacupiranga geikielites and the kimberlite ilmenites on the basis of their pyrophanite-component...titanian clinohumite from the Jacupiranga carbonatite, S~o Paulo, Brazil. Am Mineral 63:544~547 Moore |  | | Journal (article/letter/editorial) | | o c k type was first f o u n d in the Jacupiranga area of Brazil and was described by DERBY (1891). H...quartz-bearing pegmatite veins characterized by pyrophanite (identified by x-ray diffraction, NEUMANNand...Electron microprobe pictures of "exsolved" futile, pyrophanite and magnetite in ilmenite. a. Electron scanning...image (Fig. 6. D) and might be the Mn--Ti oxide, pyrophanite. The third mineral occurs in the iron-rich areas...0.2 99.7 99.9 100.7 * Mn is calculated as pyrophanite molecule together with the ilmenite. 99.8 100 |  | | Journal (article/letter/editorial) | | concentrated in late stage melt fractions. The high pyrophanite contents, which are more typical of silicic alkali...Ilm = ilmenite; Geik = geikielite; Pyroph = pyrophanite TiOz 9ol/~, /" z0t ~pR § MgTi0 ~ ' ~ "~...Ilm = ilmenite; Geik = geikielite; Pyroph ~ pyrophanite. Table 5. Koidu kimberlitic oxides from sample...Ilm = ilmenite; Geik = geikielite; Pyroph = pyrophanite 255 Table 6. Koidu kimberlitic oxides from...Ilm = ilmenite; Geik = geikielite; Pyroph ==pyrophanite Each column represents a single analysis except |  | | Journal (article/letter/editorial) | | Complex exsolution microstructures in ilmenite–pyrophanite from the Garnet Codera dyke pegmatite (Central...Editor: Andrew Christy] ABSTR ACT Ilmenite–pyrophanite crystals from a garnet pegmatite dyke from the...crystallographic orientation of the ilmenite–pyrophanite host, are bean-shaped when observed on sections...needles elongated along 〈110〉 of the ilmenite–pyrophanite and titanohematite host. The following crystallographic...Ta2O5 in this system. K E Y WO R D S : ilmenite, pyrophanite, titanohematite, columbite, tantalite, exsolution |  | | Journal (article/letter/editorial) | | rich in Mn ( - 30 wt.% MnO) that they are Fe-pyrophanite or Mgpyrophanite rather than Mn-ilmenite or Mg-ilmenite...published analyses of the geikielite--ilmenite--pyrophanite(GIP) mineral group are rich in either Mg or Mn;...(analysis 18) down to as low as 1 mole% whilst the pyrophanite c o m p o n e n t (MnTiO3) content gradually...e n t is very low (0.1 mole% or less of the pyrophanite component). In strong contrast, IL in the hemo-ilmenites...much higher Mn con- tents (3--6 mole% of the pyrophanite component) and their negligible Mg contents (Fig |  | | Journal (article/letter/editorial) | | magnetite-magnesioferrite solid solution series as in Jacupiranga carbonatite or the magnetite-jacobsite solid...or an ilmenitegeikelite-pyrophanite-hematite solid solution as in Jacupiranga. Spinels, when present,...and sulfide minerals in carbonatite from Jacupiranga, Brazil. Carnegie Inst Washington Yearb 77 : 876...titanium clinohumite from the Jacupiranga carbonatite, Sao Paulo, Brazil. Am Mineral 63 : 544-547 Mitchell |  | Zajzon, N., Váczi, T., Fehér, B., Takács, Á., Szakáll, S., Weiszburg, T. G. (2013) Pyrophanite pseudomorphs after perovskite in Perkupa serpentinites (Hungary): a microtextural study and geological implications. Physics and Chemistry of Minerals, 40 (8) 611-623 doi:10.1007/s00269-013-0596-2 | Journal (article/letter/editorial) | | DOI 10.1007/s00269-013-0596-2 ORIGINAL PAPER Pyrophanite pseudomorphs after perovskite in Perkupa serpentinites...Springer-Verlag Berlin Heidelberg 2013 Abstract Pyrophanite in serpentinite at Perkupa (Hungary) is described...of perovskite or its alteration products. The pyrophanite rim consists of an inner zone, representing a...electron backscatter diffraction data show that the pyrophanite rims typically represent single crystals rather...Perovskite occurs exclusively in the core of pyrophanite and was identified as the orthorhombic CaTiO3 |  | Castillo-Oliver, Montgarri, Melgarejo, Joan Carles, Galí, Salvador, Pervov, Vladimir, Gonçalves, Antonio Olimpio, Griffin, William L., Pearson, Norman J., O'Reilly, Suzanne Y. (2017) Use and misuse of Mg- and Mn-rich ilmenite in diamond exploration: A petrographic and trace element approach. Lithos, 292. 348-363 doi:10.1016/j.lithos.2017.09.021 | Journal (article/letter/editorial) | | e assemblage. In the ilmenite-geikielite-pyrophanite-hematite end-member ternary diagrams (fig....the secondary ilmenite, which is almost pure pyrophanite (Pph≈88) RI (fig 3c and fig.4c). They are also...MnO) ilmenite xenocrysts RI were found in Juina (Brazil) (Kaminsky and Belousova, 2009). Their trace- ...(MgTiO3), ilmenite (FeTiO3), hematite (Fe2O3) and pyrophanite SC (MnTiO3) components, after Mitchell (1979)..., Nb ) in the carbonatites from the Jacupiranga Complex , Brazil. Am. Mineral. 68, 960–971. NU Giuliani |  | Brotzu, P., Gomes, C.B., Melluso, L., Morbidelli, L., Morra, V., Ruberti, E. (1997) Petrogenesis of coexisting SiO2-undersaturated to SiO2-oversaturated felsic igneous rocks: The alkaline complex of Itatiaia, southeastern Brazil. Lithos, 40 (2) 133-156 doi:10.1016/s0024-4937(97)00007-8 | Journal (article/letter/editorial) | | The alkaline complex of Itatiaia, southeastern Brazil P. Brotzu a, C.B. Gomes b, L. Melluso a3*, L. Morbidelli...Geocihbas, Universidade de Skio Paula, Siio Paula, Brazil ’ Dipam’mento di Scienze della Terra, Universith...Cretaceous-Tertiary alkaline province of southeastern Brazil, that is distributed around and * Corresponding...melluso@unina.it. 0024-4937/97/$17.00 Itatiaia; Brazil within the Pam& basin (Ulbrich and Comes, 1981;...earliest intrusions (Anitapolis, Juqui’a and Jacupiranga, 127 and 132 Myr) are scarce and substantially |  | 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) | | kimberlite, the only currently active diamond-producing mine in Angola, was emplaced in the northeastern part... Catoca, currently the unique active kimberlite mine in Angola, is located in the Lucapa structure, a...Haggerty and Tompkins (1983); (B) in therms of the pyrophanite (MnTiO3)–ilmenite (FeTiO3)–hematite (Fe2O3) diagram...processes, during serpentinization. In fact, pyrophanite can be produced during serpentinization of ultrabasic...European Social Fund. We also thank ENDIAMA and the mine geologists, who kindly allowed us to acquire samples |  | Kruk, Mikhail Nikolaevich, Doroshkevich, Anna Gennadievna, Prokopyev, Ilya Romanovich, Izbrodin, Ivan Aleksandrovich (2021) Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) Minerals, 11 (6) 556 doi:10.3390/min11060556 | Journal (article/letter/editorial) | | different mineral species: ilmenite, geikielite, and pyrophanite. Ilmenite and geikielite have extremely similar...apfu., while in ilmenite, it is 0.19–0.2 apfu. Pyrophanite contains a large amount of total Fe (0.36–0.4...carbonatites and phoscorites [54] (Figure 12b). The Jacupiranga phlogopites are enriched in Ba and Al, but their...(up to 0.6 apfu.) phlogopites (Figure 12c). Jacupiranga phlogopite is depleted in Al during evolution...carbonatite complexes (b–e). Palabora [13], Jacupiranga [28], Sokli [51], Kovdor [34]. Green field—micas |  | | Journal (article/letter/editorial) | | variable amounts of MgTiO3 (geikielite) and MnTiO3 (pyrophanite) (Table 13). Intermediate members are common...endmembers of hematite, ilmenite, geikielite, and pyrophanite, respectively. FeO(T): total iron as FeO. Fe+3...phlogopite from the Tapira carbonatite complex, Brazil. American Mineralogist 81, 913–927. CHAKHMOURADIAN...(1982) Barium phlogopite from the Jacupiranga carbonatite, Brazil. American Mineralogist 67, 997–1000...and titanian clinohumite from the Jacupiranga carbonatite, São Paulo, Brasil. American Mineralogist 63 |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma |  | | Journal (article/letter/editorial) | | orthose for K and Al, albite for Na, Fe2O3 for Fe, pyrophanite for Mn and Ti, titanite for Si and Ti, zircon...of zirconolite and calzirtite from Jacupiranga, São Paulo (Brazil). Mineralogical Magazine 63, 649–660 |
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