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Textural and geochemical characteristics of garnet from the Luoyang Fe skarn deposit, eastern China: implications for ore-forming fluid evolution and mineralization conditions

Published online by Cambridge University Press:  12 July 2021

Qiang Wang ,
Yu-Long Yang Open the ORCID record for Yu-Long Yang [Opens in a new window] ,
Yao Tang ,
Wen-Qi Guo  and
Tian-Xin Xiao
Qiang Wang
Affiliation:
College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
Yu-Long Yang*
Affiliation:
College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
Yao Tang
Affiliation:
College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
Wen-Qi Guo
Affiliation:
College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
Tian-Xin Xiao
Affiliation:
College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
*
Author for correspondence: Yu-Long Yang, Email: [email protected]
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Abstract

The late Palaeozoic Yong’an–Meizhou depression belt is an important iron (Fe) and polymetallic metallogenic belt in southern China. It has undergone a transformation from Tethys to the circum-Pacific tectonic domain. The Luoyang deposit is one of the typical Fe skarn deposits in the Yong’an–Meizhou depression belt of eastern China. Garnet is a characteristic mineral in the deposit. Two generations of garnets are detected in the deposit based on their textural characteristics and trace-element contents, and are represented by Fe-enriched andradite. The first generation of garnets (Grt1) have two types of garnets (Grt1-A and Grt1-B). Type A garnets of the first generation (Grt1-A) (Adr80-88) replaced by massive diopside-magnetite assemblage exhibit distinct oscillatory zonings and display patterns of enriched light rare earth elements (LREE) to weak heavy rare earth elements (HREE), with weak negative to positive Eu anomalies, and highest U, ΣREE and Sn contents. Type B garnets of the first generation (Grt1-B) are irregular zones (Adr94-96) coexisting with magnetite, in which Grt1-A is generally dissolved, and have obviously LREE-enriched and HREE-depleted patterns, with weak negative to positive Eu anomalies, and moderate U, ΣREE and Zn contents. Garnets of the second generation (Grt2) (Adr96-99) that replaced massive magnetite together with sphalerite show unzoned patterns, with a flat REE pattern and pronounced negative Eu anomalies as well as contents of lowest U and ΣREE, and highest W. The substitution of REEs in garnets occurs as [X2+]VIII –1[REE3+]VIII +1[Si4+]IV –1[Z3+]IV +1in an Al-enriched environment. Luoyang hydrothermal fluids shifted from reducing conditions with relatively high-U and -ΣREE characteristics to oxidizing conditions with relatively low-U and -ΣREE characteristics. The reduced siderophile elements and increased fO2 in fluid during Grt1-B formation caused magnetite mineralization and reduced Zn contents during Grt2 formation, causing the deposition of sphalerite. All garnets formed from magmatic fluid and were controlled by infiltrative metasomatism in an opened system.

Keywords

LA-ICP-MSgarnetLuoyang depositeastern China
Type
Original Article
Information
Geological Magazine , Volume 158 , Issue 11 , November 2021 , pp. 1937 - 1950
Copyright
© The Author(s), 2021. Published by Cambridge University Press

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References

Anders, M and Grevesse, N (1989) Abundances of the elements: meteoritic and solar. Geochimica et Cosmochimica Acta 53, 197–214.CrossRefGoogle Scholar
Bau, M (1996) Controls on the fractionation of isovalent trace elements in magmatic and aqueous systems: evidence from Y/Ho, Zr/Hf, and lanthanide tetrad effect. Contributions to Mineralogy and Petrology 123, 323–33.CrossRefGoogle Scholar
Deer, WA, Howie, RA, Wise, WS and Zussman, J (1997) Rock-forming Minerals. Framework Silicates: Silica Minerals, Feldspathoids and the Zeolites. Geological Society of London.Google Scholar
Ding, T, Ma, DS, Lu, JJ and Zhang, RQ (2018) Garnet and scheelite as indicators of multi-stage tungsten mineralization in the Huangshaping deposit, southern Hunan province, China. Ore Geology Reviews 94, 193–211.CrossRefGoogle Scholar
Enami, M, Bolin, C, Yoshida, T and Kawabe, I (1995) A mechanism for Na incorporation in garnet: an example from garnet in orthogneiss from the Su-Lu terrane, eastern China. American Mineralogist 80, 475–82.CrossRefGoogle Scholar
Fan, XJ, Wang, XD, Lü, XB, Wei, W and Chen, W (2018) Garnet composition as an indicator of skarn formation: LA-ICP-MS and EPMA studies on oscillatory zoned garnets from the Haobugao skarn deposit, Inner Mongolia, China. Geological Journal 54, 1976–92.CrossRefGoogle Scholar
Feneyrol, J (2012) Pétrologie, géochimie et genèse des gisements de tsavorite associés aux gneiss et roches calco-silicatées graphiteux de Lemshuku et Namalulu, Tanzanie. PhD thesis, Université de Lorraine. Published thesis.Google Scholar
Fu, Y, Sun, XM, Li, DF and Lin, H (2018) U–Pb geochronology and geochemistry of U-rich garnet from the giant Beiya gold-polymetallic deposit in SW China: constraints on skarn mineralization process. Minerals 8, 128–47.CrossRefGoogle Scholar
Gaspar, M, Knaack, C, Meinert, LD and Moretti, R (2008) REE in skarn systems: a LA-ICP-MS study of garnets from the Crown Jewel gold deposit. Geochimica et Cosmochimica Acta 72, 185–205.CrossRefGoogle Scholar
Green, TH, Blundy, JD and Adam, J (2000) SIMS determination of trace element partition coefficients between garnet, clinopyroxene and hydrous basaltic liquids at 2–7.5 GPa and 1080–1200 °C. Lithos 53, 165–87.CrossRefGoogle Scholar
Grew, ES, Marsh, JH, Yates, MG, Lazic, B, Armbruster, T, Locock, A, Bell, SW, Dyar, MD, Bernhardt, HJ and Medenbach, O (2010) Menzerite-(Y), a new species, {(Y, REE)(Ca, Fe2+)2}[(Mg, Fe2+) (Fe3+, Al)] (Si3) O12, from a felsic granulite, Parry Sound, Ontario, and a new garnet end-member, {Y2Ca}[Mg2](Si3)O12 . Canadian Mineralogist 48, 727–49.CrossRefGoogle Scholar
Huang, GZ (1982) Early and middle Carboniferous volcanics in southwestern Fujian. Bulletin of Nanjing Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences 3, 86–109 (in Chinese with English abstract).Google Scholar
Huang, QC (2011) On the geological characteristics and ore-finding perspective of the Luoyang iron ore in Zhangping city, Fujian Province. Geology of Fujian 30, 113–20 (in Chinese with English abstract).Google Scholar
Jaffe, HW (1951) The role of yttrium and other minor elements in the garnet group. American Mineralogist 36, 133–55.Google Scholar
Jamtveit, B, Wogelius, RA and Fraser, DG (1993) Zonation patterns of skarn garnets: records of hydrothermal system evolution. Geology 21, 113–6.2.3.CO;2>CrossRefGoogle Scholar
Lin, DY (2011) Research on Late Paleozoic-Triassic tectonic evolution and metallogenetic regularities of iron-polymetallic deposits in the southwestern Fujian Province. PhD thesis, China University of Geosciences (in Chinese with English abstract). Published thesis.Google Scholar
Liu, C (1989) The tectonic and metallization of Hercynian-Indosinian depression in southeastern Fujian to eastern Guangdong. PhD thesis, Nanjing University (in Chinese with English abstract). Published thesis.Google Scholar
Liu, YS, Hu, ZC, Gao, S, Günther, D, Xu, J, Gao, CG and Chen, HH (2008) In situ analysis of major and trace elements of anhydrous minerals by LA–ICP–MS without applying an internal standard. Chemical Geology 257, 34–43.CrossRefGoogle Scholar
Mao, JR, Tao, KY, Xie, FG, Xu, NZ and Chen, SY (2001) Rock-forming and ore-forming processes and tectonic environments in southwest Fujian. Acta Petrologica et Mineralogica 20, 229–336 (in Chinese with English abstract).Google Scholar
McIntire, W (1963) Trace element partition coefficients—a review of theory and applications to geology. Geochimica et Cosmochimica Acta 27, 1209–64.CrossRefGoogle Scholar
Meinert, LD (1992) Skarns and skarn deposits. Geoscience Canada 19, 145–62.Google Scholar
Meinert, LD, Dipple, GM and Nicolescu, S (2005) World skarn deposits. Economic Geology 100th Anniversary Volume, 299–336.CrossRefGoogle Scholar
Novak, GA and Gibbs, GV (1971) The crystal chemistry of the silicate garnets. American Mineralogist 56, 791–825.Google Scholar
Pan, YM and Fleet, ME (1996) Intrinsic and external controls on the incorporation of rare-earth elements in calc-silicate minerals. Canadian Mineralogist 34, 147–59.Google Scholar
Park, C, Choi, W, Kim, H, Park, MH, Kang, IM, Lee, HS and Song, Y (2017a) Oscillatory zoning in skarn garnet: implications for tungsten ore exploration. Ore Geology Reviews 89, 1006–18.CrossRefGoogle Scholar
Park, C, Song, Y, Kang, I, Shim, J, Chung, D and Park, C (2017b) Metasomatic changes during periodic fluid flux recorded in grandite garnet from the Weondong W-skarn deposit, South Korea. Chemical Geology 451, 135–53.CrossRefGoogle Scholar
Pohl, WL (2011) Economic Geology: Principles and Practice. Oxford: Blackwell’s.CrossRefGoogle Scholar
Shannon, RD (1976) Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica A32, 751–67.CrossRefGoogle Scholar
Smith, M, Henderson, P, Jeffries, T, Long, J and Williams, C (2004) The rare earth elements and uranium in garnets from the Beinn an Dubhaich Aureole, Skye, Scotland, UK: constraints on processes in a dynamic hydrothermal system. Journal of Petrology 45, 457–84.CrossRefGoogle Scholar
Sun, SS and McDonough, WF (1989) Chemical and isotopic systematic of oceanic basalts: implications for mantle composition and processes. In Magmatism in the Ocean Basins (eds Saunders, AD and Norry, MJ), pp. 313–45. Geological Society of London, Special Publication no. 42.Google Scholar
Sun, ZY, Wang, JB, Wang, YW, Long, LL, Hu, QT, Wang, ML, Li, DD and Xie, HJ (2020) Two generations of garnets and their relevance for the hydrothermal fluid evolution of the Hongyuntan deposit, NW China. Ore Geology Reviews 122, 103513.CrossRefGoogle Scholar
Tian, ZD, Leng, CB, Zhang, XC, Zafar, T, Zhang, LJ, Hong, W and Lai, CK (2019) Chemical composition, genesis and exploration implication of garnet from the Hongshan Cu-Mo skarn deposit, SW China. Ore Geology Reviews 112, 103016.CrossRefGoogle Scholar
Van Westrenen, W, Allan, N, Blundy, J, Purto, J and Wood, B (2000) Atomistic simulation of trace element incorporation into garnets—comparison with experimental garnet-melt partitioning data. Geochimica et Cosmochimica Acta 64, 1629–39.CrossRefGoogle Scholar
Wang, MF, Shang, XY, Zhang, FC, Wei, KT and Wang, W (2019) In-situ major and trace element chemistry of melanite from Tieshan Fe–Cu skarn deposit, Hubei Province, Eastern China: implications for hydrothermal fluid evolution. Ore Geology Reviews 111, 102996.CrossRefGoogle Scholar
Wang, S, Zhang, D, Yu, TD, Wu, GG, Di, YJ, Zhang, YY and Yao, JM (2021) Geochronology and S–Pb–O–H isotopic constraints on the generation of the Luoyang Fe deposit in southwest Fujian Province, SE China. Resource Geology 71, 63–79.CrossRefGoogle Scholar
Wang, WB, Ji, SX, Xing, WC and Wang, RH (1981) A discussion on genesis of Makeng type iron deposit in Southeastern Fujian. Bulletin Nanjing Institute of Geology and Mineral Resource, Chinese Academic Geological Sciences 2, 1–27 (in Chinese with English abstract).Google Scholar
Yang, YL, Ni, P, Pan, JY, Chi, Z, Ding, JY and Wang, Q (2020a) Episodic fluid evolution in the formation of the large scale Luoyang Fe deposit, Fujian, eastern China. Ore Geology Reviews 120, 103412.CrossRefGoogle Scholar
Yang, YL, Ni, P, Wang, Q, Wang, JY and Zhang, XL (2020b) In situ LA-ICP-MS study of garnets in the Makeng Fe skarn deposit, eastern China: fluctuating fluid flow, ore-forming conditions and implication for mineral exploration. Ore Geology Reviews 126, 103725.CrossRefGoogle Scholar
Yang, YL, Ni, P, Wu, CZ, Ding, JY and Zhu, RZ (2017) Geochronology, geochemistry, and petrogenesis of the late Mesozoic Luoyang volcanics: implications for the geodynamic evolution of the Zhejiang-Fujian region, SE China. Geological Journal 53, 1635–55.CrossRefGoogle Scholar
Zhai, DG, Liu, JJ, Zhang, HY, Wang, JP, Su, L, Yang, XA and Wu, SH (2014) Origin of oscillatory zoned garnets from the Xieertala Fe–Zn skarn deposit, northern China: in situ LA–ICP–MS evidence. Lithos 190, 279–91.CrossRefGoogle Scholar
Zhang, D (1999) Tectonic evolution and tin polymetal reginal metallogenesis in southwestern Fujian Province. PhD thesis, Chinese Academy of Geological Sciences (in Chinese with English abstract). Published thesis.Google Scholar
Zhang, D, Wu, GG, Di, YJ, Wang, CM, Yao, JM, Zhang, YY, Lv, LJ, Yuan, Y and Shi, JJ (2012) Geochronology of diagenesis and mineralization of the Luoyang iron deposit in Zhangping city, Fujian Province and its geological significance. Earth Science–Journal of China University of Geosciences 37, 1217–31 (in Chinese with English abstract).Google Scholar
Zhang, Y, Liu, QQ, Shao, YJ and Li, HB (2017a) Fingerprinting the hydrothermal fluid characteristics from LA–ICP–MS trace element geochemistry of garnet in the Yongping Cu deposit, SE China. Minerals 7, 199–226.CrossRefGoogle Scholar
Zhang, Y, Shao, YJ, Wu, CD and Chen, HY (2017b) LA–ICP–MS trace element geochemistry of garnets: constraints on hydrothermal fluid evolution and genesis of the Xinqiao Cu–S–Fe–Au deposit, eastern China. Ore Geology Reviews 86, 426–39.CrossRefGoogle Scholar
Zhang, ZJ (2015) The genesis of Makeng Fe deposit and mineral prospectivity mapping in southwest Fujian, China. PhD thesis, China University of Geosciences (in Chinese with English abstract). Published thesis.Google Scholar
Zhang, ZJ, Cheng, QM, Yang, J and Hu, XL (2018) Characterization and origin of granites from the Luoyang Fe deposit, southwestern Fujian Province, South China. Journal of Geochemical Exploration 184, 119–35.CrossRefGoogle Scholar
Zhang, ZJ, Zuo, RG and Cheng, QM (2015) The mineralization age of the Makeng Fe deposit, South China: implications from U–Pb and Sm–Nd geochronology. International Journal of Earth Sciences 104, 663–82.CrossRefGoogle Scholar
Zhao, YM, Tan, HJ, Xu, ZN, Yuan, RG, Zheng, RL and Lin, FX (1980) Geological conditions of the formation of calcic-skarn iron deposit in southwestern Fujian and characteristics of their alteration and mineralization. Bulletin of Institute of Mineral Deposit, Chinese Academy of Geological Sciences 1, 21–48 (in Chinese with English abstract).Google Scholar
Zheng, NL and Zhang, ZS (1988) The geological characteristics and genetic type of the Mo deposit of Luoyang Zhangping County. Journal of Fuzhou University 4, 111–8 (in Chinese with English abstract).Google Scholar
Zhou, JH, Feng, CY and Li, DX (2017) Geochemistry of the garnets in the Baiganhu W–Sn orefield, NW China. Ore Geology Reviews 82, 70–92.CrossRefGoogle Scholar
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