 | | Journal (article/letter/editorial) | | from the northern Oman ophiolite as the stratigraphically shallowest chromitite in ophiolite and its implication...podiform chromitite was found at Wadi Hilti in the northern Oman ophiolite. It is within a late-intrusive...chromitite is in the upper crust, by far shallower in ophiolite stratigraphy than the other podiform chromitites...chromitite from Oman has relatively low content of (Cr2O3 + Al2O3), the Cr/(Cr + Al) atomic ratio of...Thayer 1964, 1969; Dickey 1975; Cassard et al. 1981; Lago et al. 1982; Paktunc 1990; Leblanc and Nicolas |  | | Journal (article/letter/editorial) | | from the deeper mantle section of the northern Oman ophiolite and its tectonic implications Received:...first time in a podiform chromitite of the northern Oman ophiolite. The chromitite contains £ 1.5 ppm of total...the mantle to the crust (Naldrett 1981; Garuti et al. 1997). PGE-abundance systematics give us information...the early stage of the planet’s history (Jagoutz et al. 1979; Arculus and Delano 1981; O’Neill 1991). PGEs...mineralogy of PGEs in the Oman ophiolite in general, especially in its northern part. We found high PGE |  | | Journal (article/letter/editorial) | | formation of chromite-oversaturated magmas. Spandler et al. (2005) found a mixing trend for the bulk CE chemical...around the chromitite (e.g., Cassard et al., 1981; Lago et al., 1982) (Fig. 1). Following the hypothesis...Yurimoto, 1994; Zhou et 4 ACCEPTED MANUSCRIPT al., 1994) (Fig. 2). Since then, podiform chromitites...various types (e.g., Proenza et al., 1999; Uysal et al., 2005; Borisova et al., 2012; Ahmed and Habtoor, 2015)...ophiolites (e.g., Robinson et al., 2004; Yang et al., 2007, 2015; Yamamoto et al., MA 2009). The whole framework |  | | Journal (article/letter/editorial) | | magma in the reservoir [11]. Recently, Latypov et al. [14] argued for the importance of a pressure reduction...precipitate the stratiform chromitite (see Schulte et al. [2] for more details about stratiform chromitite)...chromitites [19,20] (Figure 1). The Cr# (= Cr/(Cr + Al) atomic ratio) of chromite is not so different; 0...and limited range of the Fe3+ ratio (Fe3+ /(Cr + Al + Fe3+ ) atomic ratio; <0.1) for the podiform chromitites...Cr/(Cr + Al) Minerals 2021, 11, 209 3 of 10 stratiform 0.5 stratiform podiform 3+ Fe Al 0.5 0 |  | Tseng, C.-Y., Yang, H.-Y., Wu, H.-Q., Zuo, G.-C. (2007) THE SILICATE MINERAL INCLUSIONS IN THE CHROMIAN SPINEL FROM THE DONGCAOHE OPHIOLITE, NORTH QILIAN MOUNTAINS, NORTHWESTERN CHINA: RECORD OF SYNTEXIS OF LOWER OCEANIC CRUST. The Canadian Mineralogist, 45 (4) 793-808 doi:10.2113/gscanmin.45.4.793 | Journal (article/letter/editorial) | | INCLUSIONS IN THE CHROMIAN SPINEL FROM THE DONGCAOHE OPHIOLITE, NORTH QILIAN MOUNTAINS, NORTHWESTERN CHINA: RECORD...Lanzhou 730000, People’s Republic of China Abstract Diopside, enstatite, pargasite, aspidolite, analcime, chlorite...series and discordant layered bodies, Dongcaohe ophiolite, in the North Qilian Mountains, Qinghai Province...composition from those in the discordant layered bodies. Diopside, the liquidus phase, was enclosed by the growing...alteration or subsequent seafloor metamorphism of the ophiolite. Syntexis of the lower oceanic crust was involved |  | | Journal (article/letter/editorial) | | included by chromian spinel. Exsolved silicates (diopside and coesite) in chromian spinel from some UHP...or less frequently within lherzolite (Cassard et al., 1981; Arai, 1997) (Fig. 1a). The podiform chromitite...melt mixing (e.g., Arai and Yurimoto, 1994; Zhou et al., 1994; Arai and Abe, 1995). However, this has been...podiform chromitites (e.g., Robinson et al., 2004; Trumbull et al., 2009). Coesite exsolved from chromian...where the chromitite is now located (Yamamoto et al., 2009). I would like to discuss a possibility of |  | | Journal (article/letter/editorial) | | contains chromite with an intermediate Cr# (Cr/(Cr + Al)) of 0.4–0.6 is the optimum host for chromitites...genuine MORB, they also form in the typical MA ophiolite tectonic setting, at supra-subduction zone spreading...Peridotite–melt reaction, Ridge segment center, Ophiolite, Mantle drilling 1. Introduction Podiform chromitites... PT (chromian spinel) with a high Cr# (Cr/(Cr + Al)) of 0.7–0.9, previous studies have reported SC...podiform chromitites from Maqsad, southern Oman ophiolite, which they interpreted to have formed in mid-ocean |  | Arai, Shoji, Miura, Makoto, Tamura, Akihiro, Akizawa, Norikatsu, Ishikawa, Akira (2020) Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis. Minerals, 10 (3) 217 doi:10.3390/min10030217 | Journal (article/letter/editorial) | | Article Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis Shoji...hydrothermal fluids, in the mantle to the crust of the Oman ophiolite. Here, we present petrologic characteristics...is associated with uvarovite in the crust and diopside + grossular in the mantle. They are discriminated...magmatic podiform chromitite by dominance of the Ca-Al silicates in the matrix. The fluids responsible for...(especially Pt and Pd). The fluids obtain Ca and Al from the crustal rocks and Cr from the mantle rocks |  | | Journal (article/letter/editorial) | | of chromite by hydrothermal solutions in the Oman ophiolite: New behavior of Cr and chromite Shoji Arai*...metasomatically replacing the layered gabbro of the Oman ophiolite. The uvarovite shows oscillatory concentric...concentric zoning in terms of Cr no. [Cr/(Cr+Al)], and the chromite is embedded only in the high-Cr-no. zones...Mg/(Mg+Fe2+) = 0.1–0.2, TiO2 < 0.3 wt% and Fe3+/(Cr+Al+Fe3+), up to 0.3], but its Cr no. is clearly different...7) in peridotites and chromitites from the Oman ophiolite. The results from this study suggest that a |  | | Journal (article/letter/editorial) | | mantle level (e.g., Arai and Yurimoto, 1994; Zhou et al., 1994; Arai, 1997). The podiform chromitites serve...g., Robinson et al., 2004; Yang et al., 2007, 2011; Yamamoto et al., 2009; Xu et al., 2009), and this...discussed in great detail (e.g., Robinson et al., 2004; Ruskov et al., 2010). The important point is that, as...show nodular textures (e.g., Zhou et al., 1996; Yamamoto et al., 2009), which characterize igneous low-P...chromitites, enveloped by dunite (e.g., Cassard et al., 1981), are commonly found within mantle peridotites |  | 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) | | lenticular or podiform morphology, which occurs in the ophiolite upper mantle sequence and the crust mantle transition...by the CiteSpace software can be found in Chen et al. [2,4]. The equation is as follows: Cij XY cos...Witwatersrand were cited more than 27 times: Zhou et al. (2014) [44], who proposed a possible model for 6...Geosciences al. (2015) [45], who studied in ophiolitic chromitites and peridotites citations); Yang et al. 7 crustal...University mantle section of the Oman ophiolite (33 citations); Xiong et al. (2015) [48], who suggested that |  | Negishi, Hironori, Arai, Shoji, Yurimoto, Hisayoshi, Ito, Shoichi, Ishimaru, Satoko, Tamura, Akihiro, Akizawa, Norikatsu (2013) Sulfide-rich dunite within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type sulfide deposits. Lithos, 164. 22-35 doi:10.1016/j.lithos.2012.11.024 | Journal (article/letter/editorial) | | within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type...transition zone Cyprus-type sulfide deposits Oman ophiolite a b s t r a c t Peculiar dunites, in part...transition zone (MTZ) are found along Wadi Thuqbah in the northern Oman ophiolite. We discuss their relevance to...Mid-Atlantic Ridge (Hannington et al., 1998; Humphris and Cann, 2000; Humphris et al., 1995) as well as from ophiolites...ophiolites (e.g., Dergachev et al., 2010). Deep processes related to sea-floor sulfide deposit formation |  | | Journal (article/letter/editorial) | | exsolution lamellae in chromite from the Semail ophiolite: Evidence for a high-pressure origin Tao Chen...Zhang, et al., Calcium amphibole exsolution lamellae in chromite from the Semail ophiolite: Evidence...exsolution lamellae in chromite from the Semail ophiolite: Evidence for a high-pressure origin State Key...chromitite from the Nakhl massif of the Semail T Ophiolite. Transmission electron microscopy observations...the Semail ophiolite. Keywords: Ca-amphibole exsolution, podiform chromitite, Semail ophiolite, hydroxyl |  | Liu, Jianguo, Wang, Jian, Hattori, Keiko, Wang, Zeli, Zhang, Han (2019) Early Palaeozoic sub-arc chromitite-bearing peridotite in the Kudi ophiolite on the westernmost Tibetan Plateau. International Geology Review, 61 (9) 1105-1123 doi:10.1080/00206814.2018.1493623 | Journal (article/letter/editorial) | | sub-arc chromitite-bearing peridotite in the Kudi ophiolite on the westernmost Tibetan Plateau Jianguo Liu...sub-arc chromitite-bearing peridotite in the Kudi ophiolite on the westernmost Tibetan Plateau, International...sub-arc chromitite-bearing peridotite in the Kudi ophiolite on the westernmost Tibetan Plateau Jianguo Liua...A chromite deposit was discovered in the Kudi ophiolite in the Palaeozoic western Kunlun orogenic belt...Fo in olivine (88.1–90.9), moderate Cr# [=Cr/(Cr + Al), 0.47–0.56] in chromite, and a positively sloped |  | Miura, Makoto, Arai, Shoji, Mizukami, Tomoyuki, Shmelev, Vladimir, Ishimaru, Satoko (2018) Petrology of Chromitites in the Higashi-Akaishi Ultrahigh-Pressure (UHP) Peridotite Complex, Japan: Toward Understanding of General Features of the UHP Chromitites. Minerals, 8 (11) 525 doi:10.3390/min8110525 | Journal (article/letter/editorial) | | various inclusions, i.e., blade- and needle-like diopside lamellae, and minute inclusions of pyroxenes,...basic petrographic and chemical features (i.e., diopside lamellae and arc-related spinel chemistry) with...metamorphism; the Higashi-akaishi peridotite complex; diopside lamella; arc-related magmatism; subduction 1...Podiform chromitites from ophiolites, such as the Oman ophiolite, commonly show various lines of evidence for...peridotites in several ophiolites such as Luobusa ophiolite [5–9] have been found from chromitites and surrounding |  | | Journal (article/letter/editorial) | | the basal mantle section of the northern part of the Oman ophiolite: A record of the latest deep-seated...the basal mantle section of the northern part of the Oman ophiolite: A record of the latest deep-seated...basal mantle section of the northern SC RI PT part of the Oman ophiolite: a record of the latest deep-seated...part of the metamorphic sole of the northern part of the Oman ophiolite. The dykes clearly cut the deformational...indicating dyke formation during obduction of the ophiolite. The Mg# [= Mg/(Mg + total Fe)] of clinopyroxenes |  | | Journal (article/letter/editorial) | | Pierre Saliot, studying the phase relations of Mg–Al-rich rocks at high pressure. He held a two-year postdoc...preliminary phase relations in the model system MgO-Al 2O3 -SiO2 -H 2O. American Journal of Science 283-A...coesite-bearing chromitites from the Luobusa ophiolite, Tibet. Geology 35: 875-878 Frezzotti ML, Selverstone...granulites and in chromitite associated with ophiolite complexes lead to speculation about the recycling...granulites and in chromitites associated with ophiolite complexes are highlighted below. Also presented |  | Zhang, Yanfei, Jin, Zhenmin, Griffin, William L., Wang, Chao, Wu, Yao (2017) High-pressure experiments provide insights into the Mantle Transition Zone history of chromitite in Tibetan ophiolites. Earth and Planetary Science Letters, 463. 151-158 doi:10.1016/j.epsl.2017.01.036 | Journal (article/letter/editorial) | | b s t r a c t The chromitites in the Luobusha ophiolite (Tibet) have been proposed as messengers from...from the deep mantle. The exsolution of diopside, MgSiO3 and coesite in chromite from these bodies has been...O4 structure (idealized composition (Mg, Fe)(Cr, Al)2 O4 ), an indicator of Mantle Transition Zone (MTZ)...accompanied by the simultaneous exsolution of diopside and other phases, which were then preserved during...Introduction Podiform chromitites in the Luobusha ophiolite (southeastern Tibet) are typically lens-shaped |  | | Report (chapter) | | the origin of large plagiogranite bodies in northern Oman, and their relationship to the overlying massive...well-preserved and well-exposed Semail ophiolite of northern Oman hosts several large plagiogranite intrusions...beneath and adjacent to the major ore bodies in northern Oman. The ubiquitous presence of metamorphic actinolitic...developed near the SDC-gabbro horizon in the ophiolite. We suggest that this process of combined ass...The Semail ophiolite in northern Oman is the largest, best-preserved and best-exposed ophiolite complex |  | | Journal (article/letter/editorial) | | edu.cn) 7 ABSTRACT 8 Primary high-Al [Cr# = 100×Cr/(Cr+Al) of 48.2–54.7] chromitites coupled with...inclusions including Na-phlogopite, 15 enstatite, diopside, pargasite, olivine, rutile, ilmenite, sulphide...and occasionally zircon 16 are found in the high-Al chromitites. Chemical compositions of these mineral...ppm; Ga = 11.2–13.3 ppm) in equilibrium with high-Al chromitites suggest that these 22 chromitites...back-arc basin 30 spreading ridge. Subsequently, high-Al chromitites were formed and mechanically 31 juxtaposed |  | | Book | | bin Said Al Shanfari Minister of Petroleum and Minerals The Speech of H.E. Said Bin Ahmed Al Shanfari...Symposium Your Royal Highness Sayed Fahad Bin Mahmoud al Said, Your Royal Highness Members of the Honourable...pleasure to welcome you in this scientific gathering in Oman which has been made possible through the directives...contribute to the advancement of earth sciences. We, in Oman look forward with keen interest to the outcome of... I wish to thank the Ministry of Defence, Royal Oman Police and the Ministry of Information for their |  | Su, Ben-Xun, Robinson, Paul T., Chen, Chen, Xiao, Yan, Melcher, Frank, Bai, Yang, Gu, Xiao-Yan, Uysal, Ibrahim, Lenaz, Davide (2020) The occurrence, origin, and fate of water in chromitites in ophiolites. American Mineralogist, 105 (6). 894-903 doi:10.2138/am-2020-7270 | Journal (article/letter/editorial) | | Podiform chromitite, clinopyroxene, olivine, ophiolite, water Introduction The discovery of various...chromitites of ophiolites (e.g., Robinson et al. 2004; Yang et al. 2007) has led to a renewed interest in...their parental magmas. It is widely thought that high-Al and high-Cr chromitites are crystallized from mid-ocean...boninite-type melts, respectively (e.g., Zhou et al. 1996; Pagé and Barnes 2009). However, many details... Melcher et al. 1997; Schiano et al. 1997; Borisova et al. 2012; González-Jiménez et al. 2014; Rollinson |  | Xiong, Fahui, Yang, Jingsui, Robinson, Paul T., Xu, Xiangzhen, Liu, Zhao, Li, Yuan, Li, Jinyang, Chen, Songyong (2015) Origin of podiform chromitite, a new model based on the Luobusa ophiolite, Tibet. Gondwana Research, 27 (2) 525-542 doi:10.1016/j.gr.2014.04.008 | Journal (article/letter/editorial) | | chromitite, a new model based on the Luobusa ophiolite, Tibet Fahui Xiong, Jingsui Yang, Paul T. Robinson...chromitite, a new model based on the Luobusa ophiolite, Tibet, Gondwana Research (2014), doi: 10.1016/j...new model based on the Luobusa SC R IP T ophiolite, Tibet Fahui Xionga, Jingsui Yanga*, Paul T....validity of this model. Chromitites in the Luobusa ophiolite of Tibet range from massive, to nodular to IP...Disseminated chromitite; UHP minerals; Luobusa ophiolite; NU 1. Introduction MA The genesis of podiform |  | Python, Marie, Rospabé, Mathieu, Ceuleneer, Georges, Benoit, Mathieu, Duranton, Emmanuelle, Breton, Jean-Paul (2020) The distinctive peridotite of Taww, Northern flank of Jabal Nakhl, Oman. Lithos, 376. 105758pp. doi:10.1016/j.lithos.2020.105758 | Journal (article/letter/editorial) | | distinctive peridotite of Taww, Northern flank of Jabal Nakhl, Oman. Marie Python, Mathieu Rospabé,...Ceuleneer, et al., The distinctive peridotite of Taww, Northern flank of Jabal Nakhl, Oman., LITHOS (2020)...distinctive peridotite of Taww, Northern flank of Jabal Nakhl, Oman. Marie Python a, *, Mathieu Rospabé...out on the Northern flank of the Jabal Nakhl close to the Taww oasis in the Northern Oman mountains....contrasts with the structural position of the Semail ophiolite. The lack of pervasive high-temperature mylonitization |  | Xiong, Qing, Henry, Hadrien, Griffin, William L., Zheng, Jian-Ping, Satsukawa, Takako, Pearson, Norman J., O’Reilly, Suzanne Y. (2017) High- and low-Cr chromitite and dunite in a Tibetan ophiolite: evolution from mature subduction system to incipient forearc in the Neo-Tethyan Ocean. Contributions to Mineralogy and Petrology, 172 (6) doi:10.1007/s00410-017-1364-y | Journal (article/letter/editorial) | | and low‑Cr chromitite and dunite in a Tibetan ophiolite: evolution from mature subduction system to incipient...Al3+)] chromitites and dunites from the Zedang ophiolite in the Yarlung Zangbo Suture (South Tibet) have...high-Cr# (0.77–0.80) chromitites (with or without diopside exsolution) have chromite compositions consistent...chromite relics that have exsolved needles of diopside. These features are similar to those of the Luobusa...Roeder 2001; Kamenetsky et al. 2001; Rollinson 2008; Gonzalez-Jimenez et al. 2011, 2014; Arai and Miura |
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