 | González-Jiménez, José María, Locmelis, Marek, Belousova, Elena, Griffin, William L., Gervilla, Fernando, Kerestedjian, Thomas N., O'Reilly, Suzanne Y., Pearson, Norman J., Sergeeva, Ivanina (2015) Genesis and tectonic implications of podiform chromitites in the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria) Gondwana Research, 27 (2) 555-574 doi:10.1016/j.gr.2013.09.020 | Journal (article/letter/editorial) | | in the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria) José María González-Jiménez a,⁎, Marek...of Sciences, 24 Georgi Bonchev Str., 1113 Sofia, Bulgaria b a r t i c l e i n f o Article history: Received...chromitites occur in the meta-dunite horizon of the Dobromirtsi ultramafic massif, in the Central Rhodope metamorphic...metamorphic core complex (southern Bulgaria). Although these were deformed and metamorphosed together with...host rocks several chromite cores from massive chromitite samples still preserve compositions unaffected |  | | Journal (article/letter/editorial) | | Ophiolite Chromitites from the Dobromirtsi Massif, Rhodope Mountains (Bulgaria) José María González-Jiménez...Institute, Bulgarian Academy of Sciences, Sofia, Bulgaria and 3Departament de Cristal·lografia, Mineralogia...Abstract The Dobromirtsi Ultramafic Massif, located in the Rhodope Mountains (SE Bulgaria), is a portion...This massif contains several small, podiform chromitite bodies which underwent the same metamorphic evolution...other ophiolite chromitites, those found in Dobromirtsi carry abundant platinum-group minerals (PGM) |  | González-Jiménez, JoséM., Gervilla, Fernando, Proenza, Joaquín A., Kerestedjian, Thomas, Augé, Thierry, Bailly, Laurent (2009) Zoning of laurite (RuS2)erlichmanite (OsS2): implications for the origin of PGM in ophiolite chromitites. European Journal of Mineralogy, 21 (2) 419-432 doi:10.1127/0935-1221/2009/0021-1921 | Journal (article/letter/editorial) | | Sciences, 24 Georgi Bonchev Str., 1113 Sofia, Bulgaria 4 BRGM (Bureau de recherches géologiques et minières)...Cuba) and in the Dobromirtsi metamorphosed ultramafic (ophiolitic) massif (SE Bulgaria) with regard to...ophiolite complex, chromitite, magma mixing, Mayarı́.Baracoa Ophiolite Belt, Dobromirtsi Ultramafic Massif...chromitites of the Dobromirtsi Ultramafic (ophiolite) Massif in the Rhodope Mountains (SE Bulgaria) is a good...2005) and ten chromitite occurrences from the Dobromirtsi Ultramafic Massif in SE Bulgaria (Tarkian et |  | González-Jiménez, José María, Gervilla, Fernando, Proenza, Joaquín A., Augé, Thierry, Kerestedjian, Thomas (2009) Distribution of platinum-group minerals in ophiolitic chromitites. Applied Earth Science, 118 (3) 101-110 doi:10.1179/174327509x12550990457924 | Journal (article/letter/editorial) | | physico-chemical nature of parental melt(s) from which chromitite crystallised.2,5,27,29,51,80 A detailed knowledge...exists an ample body of data on PGM in ophiolitic chromitite. The purpose of this paper is to present the...their abundance and their textural location in chromitite ore bodies. Based on our own research and information...Sciences, 24 Georgi Bonchev Str., 1113 Sofia, Bulgaria 2 *Corresponding author, email jmgonzj@ugr.es...in the chromitite. Data selection and methods We compiled a list of PGM in ophiolitic chromitite worldwide |  | | Journal (article/letter/editorial) | | PGE-NPs in base-metal sulfides (BMS) from PGE-rich chromitite and melanorite pegmatites from the Merensky Reef...northern Bushveld Complex, and from the UG-2 chromitite at the Karee Mine. The cited authors detected...and/or Fe in the crystal structure of the UG-2 chromitite. These consist of small (10 to AC 100 nm) specks...crystal structure of pentlandite of the UG-2 chromitite (Junge et al., 2015). These observations suggest...monomineralic Cr- and Al-rich spinel (i.e., podiform chromitite deposits; Leblanc and Nicolás, 1992; González-Jiménez |  | | Journal (article/letter/editorial) | | Preface MA Part I. Origins of peridotites and chromitite deposits in ophiolites: Evidence for multi-stage..., Li, J., Chen, S., 2015. Origin of podiform chromitite, a new model based on the Luobusa ophiolite,...the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria). NU SC 8. Moghadam, H.F., Khedr, M.Z...Ottley, C.J., 2015. Arc-related harzburgite–dunite–chromitite complexes in the mantle section of the Sabzevar...Furnes, 2011, 2014). Chromite grains and small chromitite bodies containing diamonds had to be transported |  | González-Jiménez, José María, Griffin, William L., Gervilla, Fernando, Proenza, Joaquín A., O'Reilly, Suzanne Y., Pearson, Norman J. (2014) Chromitites in ophiolites: How, where, when, why? Part I. A review and new ideas on the origin and significance of platinum-group minerals. Lithos, 189. 127-139 doi:10.1016/j.lithos.2013.06.016 | Journal (article/letter/editorial) | | during migration of the parental melts of the chromitite. (3) Other platinum-group minerals may have precipitated...polyphase metamorphism or “recycling” of the chromitite into deeper mantle levels can explain the presence.... . . . . . . . . . Petrological features of chromitite-hosted platinum-group minerals . . . . . . ....observation that the Os-rich PGMs in ophiolitic chromitite might have several distinct origins is relevant...the chromitites. 2. Petrological features of chromitite-hosted platinum-group minerals 2.1. Mode of occurrence |  | González-Jiménez, José M., Proenza, Joaquín A., Martini, Michelangelo, Camprubí, Antoni, Griffin, William L., O'Reilly, Suzanne Y., Pearson, Norman J. (2017) Deposits associated with ultramafic–mafic complexes in Mexico: the Loma Baya case. Ore Geology Reviews, 81. 1053-1065 doi:10.1016/j.oregeorev.2015.05.014 | Journal (article/letter/editorial) | | complexes Loma Baya Guerrero composite terrane Mexico Chromitite Platinum-group elements Back-arc settings Supra-subduction...associated ore deposits formed, the genesis of the chromitite deposits within the Loma Baya ultramafic–mafic...results it stems that the Loma Baya complex and the chromitite deposits associated with it are closely related...obtained Re–Os model ages in PGM of the Loma Baya chromitite deposits (ca. 300 and 130 Ma) suggest a possible...processes (mantle rock melting, re-melting, and chromitite emplacement) within similar tectonomagmatic environments |  | Colás, Vanessa, González-Jiménez, José M., Griffin, William L., Fanlo, Isabel, Gervilla, Fernando, O'Reilly, Suzanne Y., Pearson, Norman J., Kerestedjian, Thomas, Proenza, Joaquín A. (2014) Fingerprints of metamorphism in chromite: New insights from minor and trace elements. Chemical Geology, 389. 137-152 doi:10.1016/j.chemgeo.2014.10.001 | Journal (article/letter/editorial) | | of Sciences, 24 Georgi Bonchev Str., 1113 Sofia, Bulgaria f Departament de Cristal lografia, Mineralogia...the Rhodope Metamorphic Core Complex in southern Bulgaria. The chromitites and their host ultramafic rocks...Rhodope Metamorphic Core Complex, of southern Bulgaria and northern Greece (Table 2 and Fig. 1). The...(the Greek equivalent of the Avren synform in Bulgaria) and concluded that the mantle rocks of the allochthonous...137–152 139 Table 2 Characterization of the chromitite samples investigated in this study. Locality |  | Cai, Pengjie, Yang, Jingsui, Lian, Dongyang, Wu, Weiwei, Yang, Yu, Rui, Huichao (2022) Knowledge Structure and Frontier Evolution of Research on Chromitite: A Scientometric Review. Minerals, 12 (10) 1211 doi:10.3390/min12101211 | Journal (article/letter/editorial) | | Structure and Frontier Evolution of Research on Chromitite: A Scientometric Review Pengjie Cai 1, * , Jingsui...Structure and Frontier Evolution of Research on Chromitite: A Scientometric Review. Minerals 2022, 12, 1211...software is an effective way to achieve this goal. Chromitite is a strategic mineral resource of global importance...applications, including steel manufacturing. Research on chromitite has not only had high economic significance,...important scientific value. An understanding of chromitite can be used to obtain insight into the processes |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . 507 Origin of podiform chromitite, a new model based on the Luobusa ophiolite,...the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria) J.M. González-Jiménez, M. Locmelis, E..... . . . . 555 Arc-related harzburgite–dunite–chromitite complexes in the mantle section of the Sabzevar |  | | Journal (article/letter/editorial) | | minerals and Fe–Ni minerals in the Sartohay podiform chromitite (west Junggar, China): implications for T–pH–fO2–fS2...minerals and Fe–Ni minerals in the Sartohay podiform chromitite (west Junggar, China): implications for T–pH–fO2–fS2...minerals and Fe–Ni minerals in the Sartohay podiform chromitite (west Junggar, China): implications for T–pH–...chromite) discovered in the Sartohay podiform chromitite hosted by the Sartohay ophiolitic mélange in...fO2 in the Sb-bearing fluid equilibrated with chromitite was low enough to decrease the Pd solubility |  | Merinero, Raúl, Lunar, Rosario, Ortega, Lorena, Piña, Rubén, Monterrubio, Serafín, Gervilla, Fernando (2014) Zoned chromite records multiple metamorphic episodes in the Calzadilla de los Barros ultramafic bodies (SW Iberian peninsula) European Journal of Mineralogy, 26 (6) 757-770 doi:10.1127/ejm/2014/0026-2406 | Journal (article/letter/editorial) | | hosting rare veins of clinopyroxenite and several chromitite bodies with thicknesses of 1–2 m and length of...2009). 3. Samples and analytical methods The chromitite samples examined in this study come from different...Barros (Fig. 1c). In the Sierra Cabrera body, chromitite samples were collected from two pods located...Rosado area (hereafter RO chromitite). In the Sierra Cabeza Gorda body, chromitite samples were collected...near the Manatı́os country house (hereafter CM chromitite). Dunite samples come from two drill cores (labelled |  | González-Jiménez, José M., Reich, Martin, Camprubí, Antoni, Gervilla, Fernando, Griffin, William L., Colás, Vanessa, O’Reilly, Suzanne Y., Proenza, Joaquín A., Pearson, Norman J., Centeno-García, Elena (2015) Thermal metamorphism of mantle chromites and the stability of noble-metal nanoparticles. Contributions to Mineralogy and Petrology, 170 (2) doi:10.1007/s00410-015-1169-9 | Journal (article/letter/editorial) | | complex in south-western Mexico is a volume of chromitite-bearing oceanic mantle that records a complex...preservation of both reactions in the Loma Baya chromitite provides compelling evidence that the hydration...thermal event that promoted dehydration in the chromitite had the opposite effect on nanoparticle stability...significantly disturb the original IPGE signatures in chromitite (Mondal et al. 2007; González-Jiménez et al....complexes of ophiolitic affinity that contain chromitite deposits along the boundaries of the GCT on the |  | | Journal (article/letter/editorial) | | Keywords: Kondyor massif, Pt-Fe alloys; Os-Ir alloys, chromitite, dunite, clinopyroxenite, Re-Os-isotopes, Highly...clinopyroxenite-dunite complexes located within the Aldan Province, in the southeastern part of the Siberian Craton...obtained also for 13 Pt-Fe alloy grains from a chromitite schlieren within the dunite core of the Kondyor...massive chromitite with visible Pt-Fe minerals (sample K-2014, Figs. 1 and 2). Both chromitite of samples...assemblage. The dunite core (zone A) with associated chromitite lenses and veins are rimmed by metadunite (olivine |  | González-Jiménez, José María, Griffin, William L., Proenza, Joaquín A., Gervilla, Fernando, O'Reilly, Suzanne Y., Akbulut, Mehmet, Pearson, Norman J., Arai, Shoji (2014) Chromitites in ophiolites: How, where, when, why? Part II. The crystallization of chromitites. Lithos, 189. 140-158 doi:10.1016/j.lithos.2013.09.008 | Journal (article/letter/editorial) | | involved. This review forms the basis for MA chromitite-genesis models that integrate new geochemical...in PT particular provide new insights into chromitite formation. Differences in the morphology, structural...Os-isotope heterogeneity in PGMs within single chromitite samples, as described in Part I, provides clear...This explains the general NU association of chromitite with the dunitic portions of ophiolitic mantle;...represent the original host rock intruded by chromitite- MA forming fluids. Keywords: PT 1. Introduction |  | | Journal (article/letter/editorial) | | positively fractionated δ53 Cr values of all chromitite samples from Othrys (+0.043 ± 0.03%), and the...of the present study, 2.5 to 3.0 kg amounts of chromitite sample mostly from locations of the Balkan Peninsula...stoichiometry. Major and trace elements in massive chromitite samples were determined by inductively coupled...[35], showing the ophiolite complexes from which chromitite samples were studied. Symbols: Oph = ophiolites;...ophiolites; Rh = Rhodope zone; Sm = from which chromitite samples were studied. Symbols: Oph = ophiolites; Rh |  | | Journal (article/letter/editorial) | | a two steps process: (1) initially, unaltered chromitite pods associated with dunite are affected by regional...kronz, A. (2013): Compositional heterogeneity in chromitite seams from the Shetland Ophiolite Complex (Scotland)...Golyamo Kamenyane serpentinite, Eastern Rhodopes, SE Bulgaria: a two-stage process. – Contributions to Mineralogy...chromite ores from the Dobromirtsi ultramafic massif, Rhodope mountains (SE Bulgaria). – Geologica Acta 7:...the metamorphosed ultramafic massif of Dobromirtsi (Bulgaria). – Gondwana Research 27: 555 – 574. Goutier |  | González-Jiménez, José María, Barra, Fernando, Walker, Richard J., Reich, Martin, Gervilla, Fernando (2014) Geodynamic implications of ophiolitic chromitites in the La Cabaña ultramafic bodies, Central Chile. International Geology Review, 56 (12) 1466-1483 doi:10.1080/00206814.2014.947334 | Journal (article/letter/editorial) | | fuchsite. Initial 187Os/188Os ratios for four chromitite samples, calculated for this age, range from...above a supra-subduction zone. This implies that chromitite-bearing serpentinites in the metamorphic basement... An initial survey by Barra et al. (1998) of chromitite samples collected from streams draining the largest...from Höfer et al. 2001) showing the location of chromitite bodies observed in situ and collected from the...Lavanderos whereas (d) and (e) are boulders of chromitite collected from the rainforest drainage network |  | | Journal (article/letter/editorial) | | of high-Al and high-Cr chromitites from Greece, Bulgaria and the Kempirsai Massif (Urals) reveals a strong...chemistry, bulk ore composition, including Ga, from chromitite samples of selected ophiolite complexes in Greece...1. Mineral Analysis Polished sections of all chromitite samples were examined using a reflected light...analyses of chromite from chromitites of Greece, Bulgaria and Kempirsai (Urals). Vourinos Pindos Skyros...Rhodope Massif Skyros Urals Kempirsai Greece Bulgaria wt% Sky. 4 Sky. 5 Soufli 1 Soufli 2 Gomati |  | Gervilla, F., Padrón-Navarta, J. A., Kerestedjian, T., Sergeeva, I., González-Jiménez, J. M., Fanlo, I. (2012) Formation of ferrian chromite in podiform chromitites from the Golyamo Kamenyane serpentinite, Eastern Rhodopes, SE Bulgaria: a two-stage process. Contributions to Mineralogy and Petrology, 164 (4) 643-657 doi:10.1007/s00410-012-0763-3 | Journal (article/letter/editorial) | | Golyamo Kamenyane serpentinite, Eastern Rhodopes, SE Bulgaria: a two-stage process F. Gervilla • J. A. Padrón-Navarta...of the Eastern Rhodope Metamorphic Complex, SE Bulgaria. It consists of metaharzburgite and metadunite...metadunite hosting layers of metagabbro and some chromitite bodies. All these lithologies were affected by ultrahigh-pressure...Institute, 24 Georgi Bonchev Str., 1113 Sofia, Bulgaria J. M. González-Jiménez ARC National Key Centre... plane) in mafic and ultramafic rocks and in chromitite bodies depends on the nature of the mafic–ultramafic |  | Gervilla, F., Asta, M. P., Fanlo, l., Grolimund, D., Ferreira-Sánchez, D., Samson, V. A., Hunziker, D., Colas, V., González-Jiménez, J. M., Kerestedjian, T. N., Sergeeva, I. (2019) Diffusion pathways of Fe2+ and Fe3+ during the formation of ferrian chromite: a µXANES study. Contributions to Mineralogy and Petrology, 174 (8) doi:10.1007/s00410-019-1605-3 | Journal (article/letter/editorial) | | alteration is better recorded in less permeable chromitite than in peridotites where extensive fluid–rock...altered chromian spinel grains from a set of chromitite samples from the same mining district using synchrotron-based...rates of fluid–rock interaction because in these chromitite-types the accommodation of deformation on porous...Institute, 24 Georgi Bonchev Str, 1113 Sofía, Bulgaria 13 Vol.:(0123456789) 65 Page 2 of 16 has...(sub-)micrometer spatial resolution. Samples The chromitite samples used in this study (Table 1) were selected |  | | Journal (article/letter/editorial) | | chromite-rich layers, henceforth described as chromitite. Ghisler (1970) compared the chromite deposits...granoblasticpolygonal fabric. The amphiboles within the chromitite layers typically show preferred grain-orientations...layer-parallel crude foliation is observed in the chromitite where smaller chromite grains are elongated and...mainly from trenches made across the strike of the chromitite layers around Karungalpatti village (Figure 1)...1). Since the chromites from different chromitite horizons as well as intra-layers show little compositional |  | | Journal (article/letter/editorial) | | surrounded by dunite envelopes of variable thickness. Chromitite seams from the Antalya mantle suite are both...in Cr-spinel indicates that the melttriggered chromitite genesis potentially involved a hydrous component...combined with the broad compositional range of the chromitite-making spinel grains (Dick and Bullen, 1984;...various models have been proposed to explain chromitite genesis, the mechanism under which they are formed...al., 2005). Additional controversy regarding chromitite derivation relates to the coexistence of high-Cr |  | | Journal (article/letter/editorial) | | include variably deformed banded and podiform chromitite bodies made up of massive, semi-massive, nodular...Compositional data indicate that these high-Cr chromitite bodies crystallized from melts of boninitic affinities...associated with clinochlore even in unaltered chromitite specimens and the degree of serpentinization...igneous origin. However, the general association of chromitite with dunite implies the involvement of melt–rock... 1995; Matveev and Ballhaus, 2002). Podiform chromitite is regularly regarded as an important petrotectonic |
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