 | | Journal (article/letter/editorial) | | PGM-bearing chromitites at the Ranomena mine, Toamasina chromite district, Madagascar Giovanni Grieco â, Anna...group elements Platinum group minerals Chromitite Madagascar a b s t r a c t This paper presents new data...the Ranomena mine, the only past-producing chromite mine in the North Toamasina chromite district of Eastern...Eastern Madagascar. Such data can provide an insight on tectonic setting that led to emplacement of their...the differences with other chromite deposits of Madagascar. Chromitite host rocks are harzburgite and pyroxenite |  | Uysal, Ibrahim, Akmaz, Recep Melih, Kapsiotis, Argyrios, Demir, Yılmaz, Saka, Samet, Avcı, Erdi, MĂŒller, Dirk (2015) Genesis and geodynamic significance of chromitites from the Orhaneli and Harmancık ophiolites (Bursa, NW Turkey) as evidenced by mineralogical and compositional data. Ore Geology Reviews, 65. 26-41 doi:10.1016/j.oregeorev.2014.08.006 | Journal (article/letter/editorial) | | hollingworthite, native osmium and iridium. Millerite and pentlandite represent the most abundant primary base-metal...2012), the chromitites at the Ranomena mine, Toamasina district, Madagascar (Grieco et al., 2012) and the...of lauriteâhollingworthite, lauriteâpentlandite, lauriteâpentlanditeâ amphibole, and lauriteâclinopyroxene...5fâk). Erlichmanite forms complex compounds with pentlandite and chalcopyrite or RuâNiâFe sulïŹdes (Fig. 5l...5l, m). A composite intergrowth of Ru-bearing pentlandite and native osmium is enclosed in a magnesiochromite |  | JimĂ©nezâFranco, Abigail, GonzĂĄlezâJimĂ©nez, JosĂ© M., RoquĂ©, Josep, Proenza, JoaquĂn A., Gervilla, Fernando, Nieto, Fernando (2020) Nanoscale constraints on the in situ transformation of RuâOsâIr sulfides to alloys at low temperature. Ore Geology Reviews, 124. 103640pp. doi:10.1016/j.oregeorev.2020.103640 | Journal (article/letter/editorial) | | Keywords: Nanoparticles Laurite-erlichmanite Pentlandite Irarsite Os-Ir-Ru alloys Focused-ion beam (FIB)...found within the PGM grain as nanoparticles of pentlandite of < 100 nm in size and had potential implications...of Monte Bueno from the Sagua de TĂĄnamo mining district in eastern Cuba (Fig. 1; Proenza et al., 1999;...2011). The Sagua de TĂĄnamo area is a small mining district (~3 km long), located in the easternmost part...and host laurite showing abundant nano-sized pentlandite inclusions. (c) Highmagnification HRTEM image |  | | Journal (article/letter/editorial) | | size, followed by heazlewoodite, pyrrhotite, pentlandite, bornite, minor NiCu-S, and Cu-Zn alloy. Millerite...%, and S contents from 32.76 to 33.85 wt.%. Pentlandite is rich in Ni (38.39â39.92 wt.%), and Fe (24...31â24.37 wt.%), whereas the S concentration in pentlandite ranged between 34.28 and 34.31 wt.% (Suppl. Table...113â145. Barnes, S.J., 2000. Chromite in komatiites, II. ModiïŹcation during greenschist to midamphibolite...and High-Al chromitites from the Sagua de TĂĄnamo district, MayarĂ-Cristal ophiolitic massif (eastern Cuba): |  | | Journal (article/letter/editorial) | | Several sulfide phases like pyrite, chalcopyrite, pentlandite, millerite, and pyrrhotite occur interstitial...alteration. Sulfides comprising millerite and pentlandite are mostly fresh and occur as independent grain...(Table 3). The observed sulfide phases include pentlandite and millerite besides native silver and gold...241â251. Barnes, S.J., 2000. Chromite in komatiites, II. Modification during greenschist to midamphibolite...Chromite deposits occurring near Kondapalle, Krishna district, AP. Jour. Geol. Soc. India, 12, 383387. Chaumba |  | | Journal (volume) | | was nicely shown for the case of oxidation of Mn(II) by bacteria [5]. Due to the rather low absorption...physics and chemistry of actinide-bearing materials; ii.) first principles, multi-scale modeling of complex...B. (2008) (eds.) Adsorption of metals by geomedia II: Variables, mechanisms, and model applications. Elsevier...outermost limefree zone (I), the transition zone (II), and the unreacted zone (III) on a periclase-based...Technische UniversitĂ€t MĂŒnchen, Garching, Germany 3 FRM II, Technische UniversitĂ€t MĂŒnchen, Garching, Germany |
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