 | | Journal (article/letter/editorial) | | 1991 Printed in Austria Ongonite from Ongon Khairkhan, Mongolia M. Stemprok Geological Survey, Prague...by V.. I. Kovalenko and coworkers at Ongon Khairkhan in Mongolia in 1970. The type area was revisited...deposits. Zusammenfassung Onoonite yon Onoon Khairkhan, Mongolei Albit-Topas-Keratophyre, auch als Ongonite...1970 von V. E. Kowalenko und Mitarbeitern bei Ongon Khairkhan in der Mongolei entdeckt. Die TypLokalit~t...a quartz-wolframite stockwork at Ongon Khairkhan in Central Mongolia raised hopes of identifying felsic |  | | Journal (article/letter/editorial) | | Occurrences of Niobium and Tantalum Mineralization in Mongolia Jaroslav Dostal 1, * and Ochir Gerel 2 1 2 *...Occurrences of Niobium and Tantalum Mineralization in Mongolia. Minerals 2022, 12, 1529. https:// doi.org/10...Technology, Baga Toiruu 34, Ulaanbaatar 14191, Mongolia Correspondence: jarda.dostal@smu.ca Abstract:...the most common Ta- and Nb-bearing minerals. In Mongolia, primary niobium and tantalum mineralization includes...mainly mineralization of Sn, W, Ta, Li, and Nb. Mongolia hosts several promising occurrences of both types |  | Dostal, Jaroslav, Kontak, Daniel J., Gerel, Ochir, Gregory Shellnutt, J., Fayek, Mostafa (2015) Cretaceous ongonites (topaz-bearing albite-rich microleucogranites) from Ongon Khairkhan, Central Mongolia: Products of extreme magmatic fractionation and pervasive metasomatic fluid: rock interaction. Lithos, 236. 173-189 doi:10.1016/j.lithos.2015.08.003 | Journal (article/letter/editorial) | | albite-rich microleucogranites) from Ongon Khairkhan, Central Mongolia: Products of extreme magmatic fractionation...albite-rich microleucogranites) from Ongon Khairkhan, Central Mongolia: Products of extreme magmatic fractionation...albite-rich microleucogranites) from Ongon Khairkhan, Central Mongolia: Products of extreme magmatic fractionation...and Technology, P.O. Box 46/672, Ulaanbaatar, Mongolia (email: gerel@must.edu.mn) 4. Department of Earth...defined at their type locality at Ongon Khairkhan, central Mongolia, as PT pristine magmatic topaz-bearing |  | | Journal (article/letter/editorial) | | topaz: (A) Matrix of ongonite from Ongon Khairkhan, central Mongolia, with acicular topaz grains (Dostal...granite from the Hub stock, Horní Slavkov-Krásno ore district, Czech Republic, with aggregates of polysynthetic...in the Hub Jo stock, Horní Slavkov-Krásno ore district, Czech Republic. Topaz occurs as irregular, anhedral...Utah, USA. At Qiguling, in the Qitianling tin district, China, Xie et al. (2013) described topaz in a...650 Heřmanská and Dolejš (2011), metallogenic province of Germany Granite from the Podlesí stock (dike |  | | Journal (article/letter/editorial) | | typical elvanes (as they occur in the Cornwall province) but are similar to classic ongonites in the central...INTRODUCTION After the discovery of ongonites in Mongolia (Kovalenko et al., 1971), the Ary-Bulak Massif...magmatism are known within the famous rare-metal province of Cornwall, Great Britain, in which elvan dikes...also tourmaline. The usual accessory minerals are zircon, apatite, rutile, magnetite, sphene, fluorite,...Ongonites were discovered in Mongolia in the vicinity of the Ongon-Khairkhan tungsten deposit. These are |  | | Book | | Jaroslav Dostal Editors Mineral Resources of Mongolia Modern Approaches in Solid Earth Sciences Volume...Jaroslav Dostal Editors Mineral Resources of Mongolia Editors Ochir Gerel Geoscience Center Mongolian...University of Science and Technology Ulaanbatar, Mongolia Bayaraa Batkhishig Department of Geology and Hydrogeology...University of Science and Technology Ulaanbaatar, Mongolia Franco Pirajno Centre for Exploration Targeting...Gateway East, Singapore 189721, Singapore Preface Mongolia occupies the central part of the giant Central |  | Shuai, Xue, Li, Shi-Min, Zhu, Di-Cheng, Wang, Qing, Zhang, Liang-Liang, Zhao, Zhidan (2021) Tetrad effect of rare earth elements caused by fractional crystallization in high-silica granites: An example from central Tibet. Lithos, 384. 105968pp. doi:10.1016/j.lithos.2021.105968 | Journal (article/letter/editorial) | | evolution. This study reports new petrography, zircon U-Pb ages, trace elemental and Hf isotopic, and...University of Geosciences, 29# Xue-Yuan Road, Haidian District, Beijing 100083, China. E-mail address: shiminlee@163...contribution presents a dataset of petrography, zircon U-Pb ages, trace elements and Hf isotopes, and...Sample locations and zircon U-Pb age (literatures) Sample locations and zircon U-Pb age (this study)...(3–5%) (Figs. 2d–2f), and accessory minerals of zircon, titanite, monazite, apatite, and allanite. Biotites |  | | Journal (article/letter/editorial) | | (ongonites) from the tungsten deposit of Ongon Khairkhan in Mongolia are examples of "quenched" dykes of "apogranitic"...(ongonites) from the tungsten deposit of Ongon Khairkhan in Mongolia (unpubl. data). The most important network...granitic systems. A pioneer work on the solubility of zircon in granitic melts was done by Watson (1979) who...determine equilibria conditions when the reversal of zircon dissolution was found to be impossible. In the...tin-bearing granites from the Kru~n~ hory metallogenetic province of Czechoslovakia. Sbor. geol. Vrd, lo~isk. Geol |  | Kempe, U., Gruner, T., Renno, A. D., Wolf, D., René, M. (2004) Discussion on Wang et al. (2000) ‘Chemistry of Hf-rich zircons from the Laoshan I- and A-type granites, Eastern China’, Mineralogical Magazine, 64, 867–877. Mineralogical Magazine, 68 (4) 669-675 doi:10.1180/0026461046840211 | Journal (article/letter/editorial) | | interesting new data on the occurrence of Hf-rich zircon in peralkaline granitic rocks. It is shown that...that the knowledge of the Hf distribution in zircon is important for the understanding of Zr/Hf ratios defined...rare-metal bearing granites may be P-rich and contain zircon moderately enriched in Hf (2 9 wt.% HfO2). Another...group is P-poor and the Hf content in accessory zircon is high (up to 35 wt.% HfO2). Both types of intrusions...(Germany/Czech Republic). K EY WORDS : hafnium, zircon, Laoshan, China. Introduction ACCORDING to our |  | Antipin, V., Gerel, O., Perepelov, A., Odgerel, D., Zolboo, T. (2016) Late Paleozoic and Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible magma sources and related mineralization. Journal of GEOsciences, 61 (1) 105-125 | Journal (article/letter/editorial) | | Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible...Science and Technology, Baga Toiruu 34, Ulaanbaatar, Mongolia; gerel@must.edu.mn 3 Institute of Paleontology...Academy of Sciences, Peace Avenue 62, Ulaanbaatar Mongolia * Corresponding author 1 2 The Central Asian...rare-metal granites of the Baikal region and Central Mongolia of contrasting ages show an identical geochemical...Li–F granite, Late Paleozoic, Early Mesozoic, Mongolia, Baikal region Received: 22 September, 2015; accepted: |  | | Journal (article/letter/editorial) | | example of the BagaGazriin Chuluu granites (Central Mongolia) Katarzyna Machowiak, François Holtz, Wojciech...ferroan granite, the Baga-Gazriin Chuluu pluton (Mongolia). The granite samples have nearly eutectic compositions...granites has to be reconsidered. Key words: Central Mongolia; A-type granites; geochemistry; trace element...BagaGazriin Chuluu granitic pluton in Central Mongolia (BG granite), which is geochemically very homogeneous...pronounced tectonic zones of the Altaid orogen in Mongolia – the Mid-Mongolian Tectonic Line (MTL) (Tomurtogoo |  | | Journal (article/letter/editorial) | | granitic rocks known locally as “ongonite” in Mongolia (Kovalenko et al. 1970), appeared at that time...results of the recent study on ongonites from Mongolia (Dostal et al. 2015). 2. Geological setting of...columbite rutile thorite monazite xenotime 0 zircon Miroslav Štemprok 0 fgLG 100 200 mgZG 300...Accessory minerals include topaz, fluorite, Hf-rich zircon, monazite, xenotime, thorite, columbite, pyrochlore...the granites in the upper suite but the amount of zircon is slightly increased. Lithian annite porphyritic |  | Sato, Kohei, Suzuki, Kazuhiro, Nedachi, Munetomo, Terashima, Shigeru, Ryazantseva, Margarita D., Vrublevsky, Anatoly A., Khanchuk, Alexander I. (2003) Fluorite Deposits at Voznesenka in the Khanka Massif, Russia: Geology and Age of Mineralization. Resource Geology, 53 (3) 193-211 doi:10.1111/j.1751-3928.2003.tb00169.x | Journal (article/letter/editorial) | | ***Committee on Geology and Mineral Resources of Primorie Province, Vladivostok, Russia + Institute of Complex Analysis...Voznesenka district are divided in age into two groups based on the CHIME age data for zircon, monazite...Cambrian limestone, K-Ar & CHIME ages, Li-mica, zircon, monazite, xenotime, Grodekovo batholith, metallogeny...deposit from 1998. Thus this district is often called as “Voznesenka Ore District (VOD)” in the Russian literatures...than the ages of other granitoid plutons in this district which are considered to be Ordovician to Silurian |  | | Journal (article/letter/editorial) | | plutons are arfvedsonite-bearing granites with zircon U-Pb ages of 115 Ma, 116 Ma, 129 Ma and 4 Journal...element analyses of mica, albite, K-feldspar, and zircon were carried out using an Agilent 7500a inductively...2 Rare element-bearing minerals Cassiterite and zircon are commonly intergrown with columbite-group minerals...also occur as interstitial phases (Fig. 6b,c). Zircon aggregates are locally present in the granite and...with pores f and cracks (Fig. 6d). Some euhedral zircon aggregates are enclosed within albite (Fig. oo |  | | Journal (article/letter/editorial) | | magma crystallisation. Accessory minerals (fluorite, zircon, REE-F-carbonate, Ti oxide, apatite, and titanite)...(HS) Granite represent a silicic large igneous province with an outcrop extent of more than 25 000 km2...(Blissett et al., 1993; Fig. 1). The volcano-plutonic province was emplaced in an intracontinental setting in...Allen and McPhie, 2002; Allen et al., 2008). U–Pb zircon dating of the GRV has yielded ages of 1591–1592...interval between 1583 ± 7 and 1598 ± 2 Ma (U–Pb zircon dates; Flint, 1993). The giant Cu–Au–U ± Ag Olympic |  | Su, Hui-Min, Jiang, Shao-Yong, Cao, Ming-Yu, Luo, Ping (2020) Rare-metal mineralization potential and petrogenesis of Early Cretaceous I-type granitic rocks in the Lizikeng volcanic basin of Jiangxi Province, South China: evidence from mineralogy, geochemistry, and geochronology. Mineralium Deposita, 55 (3) 453-468 doi:10.1007/s00126-019-00894-4 | Journal (article/letter/editorial) | | rocks in the Lizikeng volcanic basin of Jiangxi Province, South China: evidence from mineralogy, geochemistry...granite porphyry, and monzogranite, occur, and zircon U–Pb dating reveals that they all formed during...whole-rock εNd(t) values of − 10.4 to − 9.6 and zircon εHf(t) values of − 14.2 to − 8.2, and they were...University of Geosciences, Wuhan 430074, Hubei Province, China 2 Northeastern Jiangxi Geological Surveying...this contribution, we present new data, including zircon U–Pb ages and Hf isotopic compositions, major, |  | Xie, Lei, Wang, Rucheng, Chen, Jun, Zhu, Jinchu, Zhang, Wenlan, Lu, Jianjun, Zhang, Rongqing (2013) A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district, southern China. Lithos, 170. 252-268 doi:10.1016/j.lithos.2013.03.001 | Journal (article/letter/editorial) | | granite enclaves at Qiguling in the Qitianling tin district, southern China Lei Xie, Rucheng Wang ⁎, Jun Chen...geochemical compositions and mineralogies to each other. Zircon U–Pb dating indicates that the topaz rhyolite (147–150...Sn–Nb–Ta mineralization have been reported in Mongolia (Kovalenko and Kovalenko, 1976), in the western...252–268 2. Geological setting of the Qitianling tin district The Nanling Range in southern China contains widespread...mal stages of development. The Qitianling tin district is located in the western part of the Nanling |  | He, Xiaohu, Tan, Shucheng, Liu, Zheng, Bai, Zhongjie, Wang, Xuance, Wang, Yuchao, Zhong, Hong (2020) Petrogenesis of the Early Cretaceous Aolunhua Adakitic Monzogranite Porphyries, Southern Great Xing’an Range, NE China: Implication for Geodynamic Setting of Mo Mineralization. Minerals, 10 (4) 332 doi:10.3390/min10040332 | Journal (article/letter/editorial) | | adakitic monzogranite porphyries from the Xilamulun district in the southern Great Xing’an Range, Northeast...southern Great Xing’an Range. Table 1. Summary of zircon U–Pb ages, lithology, and Sr–Nd isotopic compositions...compositions for adakitic rocks in the Xilamulun district within the southern Great Xing’an Range, Northeast...closure of the Paleo–Asian ocean [20]. In this district, there are numerous Northeast–Southwest (NE–SW)...Yangchang, and Huanggang plutons in the Xilamulun district (see Figure 1b) [13,15,17,23–25]. Figure 1. (a) |  | | Journal (article/letter/editorial) | | Accepted April 28, 1993 Abstract. The solubilities of zircon, rutile, manganocolumbite (MnNb206), manganotantalite...the ZrO2 content of the melt in equilibrium with zircon increases with the square of the F content from...increase for rutile and the quadratic relationship for zircon suggest a complexing mechanism. Probably nonbridging...also a possibility. As titanium oxide phases and zircon are major sinks for HFS elements such as Ti, Nb...on the solubility of refractory phases such as zircon, a similar correlation could also result from different |  | Wu, Ming-qian, Tian, Bao-feng, Zhang, De-hui, Xu, Guo-zhan, Xu, Wen-xi, Qiu, Kun-feng (2018) Zircon of the No. 782 deposit from the Great Xing’an Range in NE China: Implications for Nb-REE-Zr mineralization during magmatic-hydrothermal evolution. Ore Geology Reviews, 102. 284-299 doi:10.1016/j.oregeorev.2018.09.006 | Journal (article/letter/editorial) | | Accepted Manuscript Zircon of the No. 782 deposit from the Great Xing’an Range in NE China: Implications... Tian, D-h. Zhang, G-z. Xu, W-x. Xu, K-f. Qiu, Zircon of the No. 782 deposit from the Great Xing’an Range...disclaimers that apply to the journal pertain. 1 Zircon of the No. 782 deposit from the Great Xing’an Range...granite (granite) that dominates the study area. Zircon is the only Zr-bearing mineral in both the porphyry...hosts only magmatic zircon, both magmatic (type I) and metasomatic (type II) zircon crystals or aggregates |  | Breiter, Karel, Badanina, Elena, Ďurišová, Jana, Dosbaba, Marek, Syritso, Liudmila (2019) Chemistry of quartz – A new insight into the origin of the Orlovka Ta-Li deposit, Eastern Transbaikalia, Russia. Lithos, 348. 105206 doi:10.1016/j.lithos.2019.105206 | Journal (article/letter/editorial) | | Europe (Breiter et al., 2017) or ongonites from Mongolia (Dostal et al., 2015). The age of the Khangilai...and that of the Orlovka cupola at 140.6±2.9 Ma (zircon U-Pb age, SHRIMP analyses, Abushkevich and Syritso...pulses is also supported by different populations of zircon oo f (Ivanova et al., 2018). We agree with Syritso...poor in oo accessory minerals like phosphates, zircon or Nb, and Ta-oxides but contain topaz and pr...trace-element data on quartz from the Borborema pegmatite province, northeast Brazil. Mineralogical Magazine 75, |  | | Journal (article/letter/editorial) | | topaz-bearing granites, such as the ongonites of Mongolia (Kovalenko et al., 1971), topazbearing rhyolites...patches in the topaz-bearing granite. The U–Pb zircon age of the biotite–hornblende (Tarkki) granite...topaz-bearing granite gives a somewhat younger, discordant, zircon age (Vaasjoki, 1977). The contact relations as...specimens, are monazite, bastna¨site, xenotime, zircon, ilmenite, cassiterite, columbite and thorite (Haapala...(Congdon & Nash, 1991). Also, the ongonites of Mongolia contain topaz as 1 mm phenocrysts and in the groundmass |  | | Journal (article/letter/editorial) | | whole rocks and zircon grains from these orebearing porphyries were measured. Zircon grains from albite...Compared to those of ore-bearing porphyries with lower zircon Ce4+/Ce3+ ratios, the (La/Yb)N ratios of orebearing...(Baker et al., 2002). Zr and Hf diffusion between zircon and melt will be reducing with the reduction of...In this paper, we examine the Ce4+/Ce3+ ratio of zircon from albite porphyry in the western Awulale metallogenic...(50 vol. %) and minor accessory minerals (e.g. zircon). Albite phenocrysts (An0.05-0.39Ab99.2-99.8Or0-0 |  | | Journal (article/letter/editorial) | | Ottolini The effect of halogens on Zr diffusion and zircon dissolution in hydrous metaluminous granitic melts...Springer-Verlag 2001 Abstract Diffusion of Zr and zircon solubility in hydrous, containing approximately...400 C in a piston-cylinder apparatus using the zircon dissolution technique. Arrhenius equations for...to calculate partition coefficients of Zr between zircon and hydrous melt, which are given by the following...responsibility: T.L. Grove zircon=melt LCO ln DZr ¼ 1:63 10000 5:87, for LCl T zircon=melt ln DZr ¼ 1:47 |  | Zhang, Li-Xue, Wang, Qing, Zhu, Di-Cheng, Li, Shi-Min, Zhao, Zhi-Dan, Zhang, Liang-Liang, Chen, Yue, Liu, Sheng-Ao, Zheng, Yuan-Chuan, Wang, Rui, Liao, Zhong-Li (2019) Generation of leucogranites via fractional crystallization: A case from the Late Triassic Luoza batholith in the Lhasa Terrane, southern Tibet. Gondwana Research, 66. 63-76 doi:10.1016/j.gr.2018.08.008 | Journal (article/letter/editorial) | | University of Geosciences 29# Xue-Yuan Road, Haidian District Beijing 100083, China Phone: (+86-10) 8232 2094...Ablation Inductively Coupled Plasma Mass Spectrometry zircon U-Pb dating SC indicates that these rocks were...Samples from Group 1 and Group 2 exhibit similar zircon εHf(t) values D (-15.6 to -1.4), both of which... AC (e.g., plagioclase K-feldspar, biotite, zircon, allanite/monazite, titanite, and apatite) from...and Neiva, 2002; Teixeira et al., 2012), central Mongolia (Dostal et al., 2015), South China (Wang et al |
|
