 | Ruan, Banxiao, Yu, Yingmin, Lv, Xinbiao, Feng, Jing, Wei, Wei, Wu, Chunming, Wang, Heng (2017) Occurrence and mineral chemistry of chromite and related silicates from the Hongshishan mafic-ultramafic complex, NW China with petrogenetic implications. Mineralogy and Petrology, 111 (5) 693-708 doi:10.1007/s00710-016-0480-0 | Journal (article/letter/editorial) | | mineral chemistry of chromite and related silicates from the Hongshishan mafic-ultramafic complex, NW China...available to authorized users. and zoned type 3 chromite has compositional variation from core to rim and...type 3 chromites. The parental melt of type 1 chromite has an estimated composition of 14.5 wt% MgO,...nature and high Mg and Ti contents. Compositions of chromite and clinopyroxene are distinct from those of Alaskan-type...are responsible for the emplacement of mafic-ultramafic complexes in the Beishan Terrane. The cores of |  | 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) | | chromitite is a rock chiefly composed of the mineral chromite, which is an oxide mineral belonging to the spinel...spinel group [16]. The main components of chromite are magnesium, iron, aluminum, and chromium [17]. According...According to their occurrence, shape, and texture, chromite deposits can be roughly divided into either stratiform...deposits [18]. Stratiform chromite deposits originate from layered mafic–ultramafic complexes in ancient Precambrian...upper peridotite and pyroxenite [21,22]. Podiform chromite deposits are characterized by irregular lenticular |  | 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) | | Zoned chromite records multiple metamorphic episodes in the Calzadilla de los Barros ultramafic bodies...Abstract: Podiform chromitites occurring in the ultramafic bodies of Calzadilla de los Barros, in the Ossa-Morena...development of variably complex patterns of zoning in chromite grains. These patterns consist of cores with variable...surrounded by thin rims of porous chromite. Two types of zoned chromite are observed in chromitites: (1)...in chromite rims. Accessory chromites in dunites show complete transformation to ferrian chromite and |  | Mohanty, Niranjan, Singh, Surya Pratap, Satyanarayanan, Manavalan, Jayananda, Mudlappa, Korakoppa, Madiwalappa Mallappa, Hiloidari, Sikha (2019) Chromian spinel compositions from Madawara ultramafics, Bundelkhand Craton: Implications on petrogenesis and tectonic evolution of the southern part of Bundelkhand Craton, Central India. Geological Journal, 54 (4) 2099-2123 doi:10.1002/gj.3286 | Journal (article/letter/editorial) | | University of Hyderabad, Hyderabad, India Madawara ultramafic complex (MUC) in the southern part of Bundelkhand...clinopyroxene (Cpx), amphibole (Amp), Al‐chromite, Fe‐ chromite, and magnetite with rare orthopyroxene...showing both homogeneous and zoned texture. Al‐chromite, primarily characterizes Cr‐spinels and its subsequent...of Fe‐chromite, chrome magnetite, and magnetite. Mineral chemistry data suggest that Al‐chromite is characterized...TiO2 (0.22–0.67 wt.%), whereas the homogeneous Fe‐chromite type is characterized by high Fe2O3 (25.54–47 |  | Palomares, R. M., Hernandez, R. L., Menor, L. O., Garcia, R. P., Perez, S. M., Linares, F. G. (2013) HYDROTHERMAL PALLADIUM ENRICHMENT IN PODIFORM CHROMITITES OF CALZADILLA DE LOS BARROS (SW IBERIAN PENINSULA) The Canadian Mineralogist, 51 (3) 387-404 doi:10.3749/canmin.51.3.387 | Journal (article/letter/editorial) | | Introduction Analysis of the mineral chemistry of chromite allows determination of the petrogenesis of ophiolitic...attributable mainly to the compatibility of IPGE in chromite, such that they co-precipitate as small, IPGErich...IPGErich platinum group minerals within their host chromite (e.g., Stockman & Hlava 1984, Prichard et al....2009b) or they concentrate in solid solution in chromite (Locmelis et al. 2011). For this reason, the ratios...(EMP) studies. Electron microprobe analysis of chromite in chromitites was performed using a CAMEBAX SX100 |  | | Journal (article/letter/editorial) | | high-Ti) within separated massifs or a single ultramafic massif makes their 47 formation processes and...chromitite varieties outcropping within 90 the same ultramafic massif provide an ideal window to indicate the...fault (Fig. 2a). The ophiolite consists mainly of ultramafic rocks, podiform 123 chromitites, cumulates...numerous 124 veins of gabbro and diabase. The ultramafic rocks are mostly harzburgite with minor 125...sandstones, and conglomerates tectonically overlie the ultramafic rocks (Fig. 2d). 131 The Sartohay podiform |  | | Journal (article/letter/editorial) | | region, i.e., the Cyclops ophiolite [5], Papuan Ultramafic Belt [6,7], Seram-Ambon ophiolite [8] and ophiolites...Department of Mineral and Energy Resources in the Papua Province selected six geological provinces with high deposit...Southern Papua and Fafak. The Jayapura geological province contains the Cu–Zn–Pb–Fe–Cr–Co–Ni–Au mineralization...Fe2 O3 Rhodonite Diopside V2 O5 CoO NiO Cuprite Chromite Sphalerite Rutile Pure Sc GaAs Kα Kα Kα Kα Kα...iron (III)paragenesis oxide-hydroxides homogenous chromite whereas is as low as (limonite). Heavygrains fraction(7 |  | | Journal (article/letter/editorial) | | 98) between Cr/(Cr + Al) ratio and Ga in large chromite deposits, suggesting that Ga hasn’t been affected...affected by re-equilibration processes. In contrast, chromite occurrences of Pindos and Rhodope massifs show...strong preference on tetrahedral sites. Keywords: chromite; gallium; spinel; structure; composition; correlation;...byproduct commodity [1], the distribution of Ga in chromite ores may be of particular research interest, due...relationship with the major element composition of chromite. Chromite belongs to the subgroup of spinels, which |  | Huang, Yang, Wang, Lu, Kusky, Timothy, Robinson, Paul T., Peng, Songbai, Polat, Ali, Deng, Hao (2017) High-Cr chromites from the Late Proterozoic Miaowan Ophiolite Complex, South China: Implications for its tectonic environment of formation. Lithos, 288. 35-54 doi:10.1016/j.lithos.2017.07.014 | Journal (article/letter/editorial) | | Chromian-spinel (chromite) is a common mineral in ophiolitic rocks IP and the study of chromite from the mantle...the NU Yangtze Craton contains disseminated chromite grains in mantle MA harzburgites and podiform...chromitites associated with serpentinised dunites. Most chromite grains display compositional zoning due to D...typical ophiolitic chromitites elsewhere. The chromite grains contain numerous inclusions of clinopyroxene...within the chromite grains suggest a hydrous mantle source. Core compositions of chromite grains indicate |  | | Journal (article/letter/editorial) | | metamorphic slice above the mélange, and a peridotite nappe at the top that hosts the Kızılyüksek chromitites...cut by isolated diabase dykes; continues with ultramafic cumulates of IP T dunite and pyroxenite and...rutile for Ti; albite for Na; orthoclase for K; chromite for Cr; and NiO for Ni. CE P The Fe2+ and Fe3+...indicative of “Mg-chromite” composition (Stevens, 1944). Cr2O3 contents AC of Mg-chromite crystals from...concentrations, although TiO2 and Cr2O3 contents of most Mg-chromite do not show any significant relationship to one |
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