Citation: | YIN Chuankai, WANG Chunlian, YOU Chao, LIU Dianhe, YAN Kai, SUN Peijie, LIANG Zhen, NING Pengyuan. 2024. Zircon resource characteristics, deposit types, key applications and prospecting prospects in China[J]. Geology in China, 51(6): 1930-1945. doi: 10.12029/gc20230911001 |
This paper is the result of mineral exploration engineering.
Zirconium is a rare metal and one of the key metal minerals. Because of its high temperature resistance, corrosion resistance, easy processing, good mechanical properties and stable chemical properties, zirconium metal and zirconium compounds have key applications in military industry, refractories, ceramics and other industries, and zircon is widely used in geological dating and tracing magma source areas.
By collecting and summarizing the previous research data, this paper studies the distribution of zirconium ore resources, the characteristics of zirconium deposit types and the key applications of zirconium metal and its alloys in China.
Zirconium deposits in China are mainly distributed in Inner Mongolia, Hainan, Guangdong, Yunnan and Guangxi provinces, and the sum of the zirconium deposits in these five provinces accounts for 97.6% of the national reserves. Zirconium mine in China has a poor resource endowment, with a reserve of about 500000 tons (calculated by ZrO2), accounting for only 1% of the global reserves. China's annual demand for zirconium ore is about 1.2 million tons, but China's annual imports of zirconium ore are about 1.1 million tons, and the degree of external dependence of zirconium ore is as high as 90%. Zirconium deposits in China can be divided into endogenetic deposits and exogenetic deposits, among which endogenetic deposits can be divided into four types: alkaline granite, pegmatite, alkaline rock and granulite, while exogenetic deposits can be divided into three types: coastal deposit, river impact, weathering crust and eluvial deposit.
Based on previous research data, endogenetic deposits are closely related to alkaline rocks, alkaline granites and pegmatites, and the northern margin fault zone of Tarim−North China Craton and the southern section of Daxing'anling Mountains have great prospecting potential. Exogenous deposits are mainly sand deposits, which are mainly distributed in the coastal zone of Hainan Island, the southeast coastal zone and the Bohai Sea–Yellow Sea zone. The eastern sea area of Hainan Island, the mouth of Changhua River in the west and the southeast coastal zone of Jiaodong Peninsula have great prospecting potential.
[1] | Chi Hongji, Li Xiuzhang, Zheng Zuoping. 2001. Littoral placers forming rule and prospecting divisions in Shandong Province[J]. Geology of Shandong, 17(5): 24−31 (in Chinese with English abstract). |
[2] | Corfu, John M H, Paul W O H, Peter K. 2003. Atlas of zircon textures[J]. Reviews in Mineralogy and Geochemistry, 53(1): 469−500. doi: 10.2113/0530469 |
[3] | Feng Runtang, Qin Yan, Deng Yongchao, Tan Xianpeng. 2004. Zirconium–containing raw materials and their application in refractory materials[J]. Rare Metals Letters, 23(6): 36−40 (in Chinese). |
[4] | Feng Xuezhi. 2020. Geological characteristics and prospecting direction of the Huashanzi ancient zirconium placer in Pizhou, Jiangsu Province[J]. East China Geology, 41(3): 256−264 (in Chinese with English abstract). |
[5] | Feng Zhihao, Xia Chaoqun, Zhang Xinyu, Ma Mingzhen, Liu Riping. 2018. Development and applications of zirconium alloys with high strength and toughness[J]. Materials Science and Technology, 26(2): 1−8 (in Chinese with English abstract). |
[6] | Force E R. 1991. Geology of titanium–mineral deposits[J]. Geological Society of America Special Paper, 259: 112. |
[7] | Force E R, Rich F J. 1989. Geologic evolution of Trail Ridge Eolian heavy–mineral sand and underlying peat, northern Florida[J]. U. S. Geological Survey Professional Paper, 1499: 16. |
[8] | Hamilton, Neil T M. 1995. Controls on the global distribution of coastal titanium–zirconium placers[J]. International Geology Review, 37(9): 755−779. |
[9] | Han Xiaohui, Li Liang, Liu Gang, Wang Xuemu. 2017. Occurrence characteristics of offshore Zi–Ti placer deposits in eastern Wanning of Hainan island[J]. China Mining Magazine, 26(S2): 186−189 (in Chinese with English abstract). |
[10] | Heaman L M, Bowins R, Crocket J. 1990. The chemical composition of igneous zircon suites: Implications for geochemical tracer studies[J]. Geochimica et Cosmochimica Acta, 54: 1597−1607. doi: 10.1016/0016-7037(90)90394-Z |
[11] | Heaman L M, LeCheminant A N. 1993. Paragenesis and U–Pb systematics of baddeleyite (ZrO2)[J]. Chemical Geology, 110: 95−126. doi: 10.1016/0009-2541(93)90249-I |
[12] | Hoskin P W, Schaltegger U. 2003. The composition of zircon and igneous and metamorphic petrogenesis[J]. Reviews in Mineralogy and Geochemistry, 53(1): 27−62. |
[13] | Huang Xinhong, Huang Huining. 2010. Application status and development prospect of zirconium silicate in traditional ceramics[J]. Foshan Ceramics, 20(1): 4−8 (in Chinese). |
[14] | Jia Yujie, Lin Xiheng, Zou Xiaowei, Han Weizhong. 2022. Research and development history, status and prospect of zirconium alloys[J]. Materials China, 41(5): 354−370 (in Chinese with English abstract). |
[15] | Jia Zhilei. 2016. Geochemical and metallogenetical characteristics of Nb−Ta−Rb deposits, South Qilian–Beishan area, Gansu Province, China[D]. Lanzhou: Lanzhou University, 1–164 (in Chinese with English abstract). |
[16] | Jiang S Y, Su H M, Xiong Y Q, Liu T, Zhu K, Zhang L. 2020. Spatial−temporal distribution, geological characteristics and ore−formation controlling factors of major types of rare metal mineral deposits in China[J]. Acta Geologica Sinica (English Edition), 94(6): 1757−1773. doi: 10.1111/1755-6724.14595 |
[17] | Jiang S Y, Liu T, Zhang H X, Cao S Y, Zheng R H, Li T G, Yu J P, Wu Y B. 2022. A new type of rare metal deposit: The Yushishan leptynite–type Nb–Ta deposit in Eastern Altun, Gansu Province, NW China[J]. Acta Geologica Sinica (English Edition), 96(5): 1471−1483. doi: 10.1111/1755-6724.15010 |
[18] | Klemme S, Meyer H P. 2003. Trace element partitioning between baddeleyite and carbonatite melt at high pressures and high temperatures[J]. Chemical Geology, 199: 233−242. |
[19] | Kogarko L N. 1990. Ore–forming potential of alkaline magmas[J]. Lithos, 26: 167−175. doi: 10.1016/0024-4937(90)90046-4 |
[20] | Li Youfen, Wang Dewei, Wang Shufan. 2006. Zirconium diboride and its application in refractory[J]. Advanced Ceramics, (3): 26−30 (in Chinese with English abstract). |
[21] | Poitrasson F, Hanchar J M, Schaltegger U. 2002. The current state of accessory mineral research[J]. Chemical Geology, 191: 3−24. doi: 10.1016/S0009-2541(02)00146-8 |
[22] | Pupin J P. 1980. Zircon and granite petrology[J]. Contributions to Mineralogy and Petrology, 73: 207−220. |
[23] | Ren Yongguo, Liu Ziqiang, Yang Kai, Zhou Huanzhong, Gu Xingyong. 2008. Kind and application of zirconia material[J]. China Ceramics, 44(4): 44−46 (in Chinese with English abstract). |
[24] | Rubatto D, Gebauer D, Compagnoni R. 1999. Dating of eclogite–facies zircons: The age of Alpine metamorphism in the Sesia–Lanzo zone (Western Alps)[J]. Earth and Planetary Science Letters, 167: 141−158. doi: 10.1016/S0012-821X(99)00031-X |
[25] | Saxena S K. 1966. Evolution of zircons in sedimentary and metamorphic rocks[J]. Sedimentology, 6: 1−33. doi: 10.1111/j.1365-3091.1966.tb01568.x |
[26] | Schaltegger U, Fanning C M, Günther D, Maurin J C, Schulmann K, Gebauer D. 1999. Growth, annealing and recrystallization of zircon and preservation of monazite in high–grade metamorphism: Conventional and in situ U–Pb isotope, cathodoluminescence and microchemical evidence[J]. Contributions to Mineralogy and Petrology, 134(2/3): 186−201. |
[27] | Scharer U, Fernando C, Daniel D. 1997. U–Pb and Lu–Hf isotopes in baddeleyite and zircon megacrysts from the Mbuji–Mayi kimberlite: Constraints on the subcontinental mantle[J]. Chemical Geology, 143: 1−16. doi: 10.1016/S0009-2541(97)00094-6 |
[28] | Shi Minghua, Liu Caili, Zhou Jun, Tian Feng, Zhang Jianjun, Wang Wensheng, Li Zhongkui. 2015. Application of zirconium and its alloys in industry[J]. Hot Working Technology, 44(18): 28−30 (in Chinese with English abstract). |
[29] | Singer D A. 1992. Descriptive model of carbonatite deposits[J]. U. S. Geological Survey Bulletin, 1693: 51. |
[30] | Song Jiawei, Wu Deming, Chen Fei, Deng Kaizhang. 2021. Geochemical characteristics and resource potential of Zr and Ti in shallow sea surface sediments in the east of Hainan island[J]. China Mining Magazine, 30(S1): 217−221 (in Chinese with English abstract). |
[31] | Sun Hongwei, Wang Jie, Ren Junping, Zhang Weibo, Tang Wenlong, Fu Chao, Wu Xingyuan, Dang Zhicai. 2019. Present situation and utilization trend of zirconium resources in the world[J]. Conservation and Utilization of Mineral Resources, 39(5): 98−105 (in Chinese with English abstract). |
[32] | Sun Hongwei, Xu Kangkang, Zuo Libo, Ren Junping, Tang Wenlong, Gu Alei, Wu Xingyuan, Chipilauka Mukofu, Alphet Phaskani Dokowe. 2023. Distribution characteristics, types, supply-demand and development utilization status of zirconium and titanium resources[J]. Geology in China, 50(4): 1070−1081 (in Chinese with English abstract). |
[33] | Syre R P, Zhang Xiaoquan. 1987. Development of zirconium in Europe (1945–1984)[J]. Rare Metal Materials and Engineering, (2): 71−80 (in Chinese). |
[34] | Taylor S R, McLennan S M. 1995. The geochemical evolution of the continental crust[J]. Reviews of Geophysics, 33: 241−265. doi: 10.1029/95RG00262 |
[35] | U. S. Geological Survey (USGC). 2023. Zirconium and Hafnium[C]// USGS Mineral Commodity Summaries, 202–203. |
[36] | Wang Denghong. 2019. Study on critical mineral resources: Significance of research, determination of types, attributes of resources, progress of prospecting, problems of utilization, and direction of exploitation[J]. Acta Geologica Sinica, 93(6): 1189−1209 (in Chinese with English abstract). |
[37] | Wang Denghong, Sun Yan, Dai Hongzhang, Guo Weiming, Zhao Zhi, Zhao Ting, Li Jiankang, Wang Chenghui, Huang Fan, Yu Yang, Li Dexian. 2019. Characteristics and exploitation of rare earth, rare metal and rare−scattered element minerals in China[J]. Strategic Study of CAE, 21(1): 119−127 (in Chinese with English abstract). |
[38] | Wang Denghong, Wang Ruijiang, Li Jiankang, Zhao Zhi, Yu Yang, Dai Jingjing, Chen Zhenghui, Li Dexian, Qu Wenjun, Deng Maochun, Fu Xiaofang, Sun Yan, Zheng Guodong. 2013. The progress in the strategic research and survey of rare earth, rare metal and rare−scattered elements mineral resources[J]. Geology in China, 40(2): 361−370 (in Chinese with English abstract). |
[39] | Wang Jingliang. 1997. Zircon and its application[J]. Multipurpose Utilization of Mineral Resources, (3): 43−49 (in Chinese with English abstract). |
[40] | Wang Lianhong. 2004. Development and application of zirconia oxygen sensor[J]. Shandong Ceramics, 27(2): 15−18 (in Chinese with English abstract). |
[41] | Wang Rucheng, Che Xudong, Wu Bin, Xie Lei. 2020. Critical mineral resources of Nb, Ta, Zr, and Hf in China[J]. Chinese Science Bulletin, 65(33): 3763−3777 (in Chinese with English abstract). |
[42] | Wang Ruijiang, Wang Denghong, Li Jiankang, Sun Yan, Li Dexian. 2015. Rare Earth, Rare Metal and Rare−scattered Element Mineral Resources and Their Development and Utilization[M]. Beijing: Geological Publishing House, 1−429 (in Chinese with English abstract). |
[43] | Wang Yixian, Zhao Zhenhua. 1997. Geochemistry and origin of the Baerzhe REE Nb–Be–Zr superlarge deposit[J]. Geochemistry, (1): 25–26, 28, 30–36 (in Chinese with English abstract). |
[44] | Wu B, Wang R C, Yang J H, Wu F Y, Zhang W L, Gu X P, Zhang A C. 2016. Zr and REE mineralization in sodic lujavrite from the Saima alkaline complex, northeastern China: A mineralogical study and comparison with potassic rocks[J]. Lithos, 262: 232−246. doi: 10.1016/j.lithos.2016.07.013 |
[45] | Wu Bin, Wang Rucheng, Liu Xiaodong, Guo Guolin, Song Zhentao. 2018. Chemical composition and alteration assemblages of eudialyte in the Saima alkaline complex, Liaoning Province, and its implication for alkaline magmatic−hydrothermal evolution[J]. Acta Petrologica Sinica, 34(6): 1741−1757 (in Chinese with English abstract). |
[46] | Xie Mingcai, Su Benxun, Wang Zhongmei, Han Chunming. 2020. Research on the characteristics of rare and rare earth deposits associated with alkaline rocks in the northern margin of Tarim, Xinjiang[J]. Chinese Journal of Geology, 55(2): 420−438 (in Chinese with English abstract). |
[47] | Xing Shijun. 2009. Discussion about the geological characteristics of the Tabei weathering crust−type Zr, Hf deposit in Longnan County, Jiangxi Province[J]. Mineral Resources and Geology, 23(1): 70−72 (in Chinese with English abstract). |
[48] | Yang Wubin, Shan Qiang, Zhao Zhenhua, Luo Yong, Yu Xueyuan, Li Ningbo, Niu Hecai. 2011. Petrogenic and metallogenic action of the alkaline granitoids in Baerzhe Area: A comparison between mineralized and barren plutons[J]. Journal of Jilin University (Earth Science Edition), 41(6): 1689−1704 (in Chinese with English abstract). |
[49] | Yang Yi, Qi Rong, Liu Xiujuan, He Yusheng, Zhang Gucheng. 2010. Mineralization prospect of Zr and Ti and analysis of metallogenic conditions at the Changhua River estuary and its adjacent sea area in Hainan[J]. Geological Science and Technology Information, 29(1): 80−85 (in Chinese with English abstract). |
[50] | Yu Junpeng, Wu Yibu, Liang Minghong, Xiao Peixi, Dou Xiaoyu. 2015. New progress of the southern Altyn Tagh geological mapping and guide the prospecting support: According to 1: 50000 Mobeier and other five regional geological maps in Gansu Province[J]. Geological Survey of China, 2(2): 40−47 (in Chinese with English abstract). |
[51] | Yuan Zhongxin, Li Jiankang, Wang Denghong. 2012. Metallogenic Regularity of Rare Earth Deposits in China[M]. Beijing: Geological Publishing House, 1–135 (in Chinese with English abstract). |
[52] | Zhang Jianwen, Wang Haidong, Gong Wenyong, Ma Chongzhen, Zhang Hua, Liao Qian. 2019. Analysis on the development and utilization situation of zirconium resource in China[J]. Conservation and Utilization of Mineral Resources, 39(5): 106−110 (in Chinese with English abstract). |
[53] | Zhang Zhenfang, Chen Xiufa, Gao Aihong, Zhang Zhenguo. 2019. Analysis of the zirconium resource situation and global layout[J]. China Mining Magazine, 28(4): 50−56 (in Chinese with English abstract). |
[54] | Zhong Yufang, Ma Changqian, She Zhenbing. 2006. Geochemical characteristics of zircon and its applications in geosciences[J]. Geological Science and Technology Information, 25(1): 27−34,40 (in Chinese with English abstract). |
[55] | 迟洪纪, 李秀章, 郑作平. 2001. 山东省滨海砂矿成矿规律及远景区划[J]. 山东地质, 17(5): 24−31. |
[56] | 冯润棠, 秦岩, 邓永超, 覃显鹏. 2004. 含锆原料及其在耐火材料中的应用[J]. 稀有金属快报, 23(6): 36−40. |
[57] | 冯学知. 2020. 江苏邳州花山子古锆砂矿地质特征及找矿方向[J]. 华东地质, 41(3): 256−264. |
[58] | 冯志浩, 夏超群, 张新宇, 马明臻, 刘日平. 2018. 高强韧锆合金的发展与应用[J]. 材料科学与工艺, 26(2): 1−8. doi: 10.11951/j.issn.1005-0299.20170022 |
[59] | 韩孝辉, 李亮, 刘刚, 王雪木. 2017. 海南岛万宁东部近海锆钛砂矿赋存特征[J]. 中国矿业, 26(S2): 186−189. |
[60] | 黄芯红, 黄惠宁. 2010. 硅酸锆在传统陶瓷中的应用现状及发展前景[J]. 佛山陶瓷, 20(1): 4−8. doi: 10.3969/j.issn.1006-8236.2010.01.002 |
[61] | 贾豫婕, 林希衡, 邹小伟, 韩卫忠. 2022. 锆合金的研发历史、现状及发展趋势[J]. 中国材料进展, 41(5): 354−370. doi: 10.7502/j.issn.1674-3962.202112010 |
[62] | 贾志磊. 2016. 甘肃南祁连—北山铌钽铷等稀有金属成矿地质特征与成矿规律的研究[D]. 兰州: 兰州大学, 1–164. |
[63] | 李友芬, 王德伟, 王舒凡. 2006. 二硼化锆及其在耐火材料中应用[J]. 现代技术陶瓷, (3): 26−30. doi: 10.3969/j.issn.1005-1198.2006.03.006 |
[64] | 任永国, 刘自强, 杨凯, 周焕忠, 顾幸勇. 2008. 氧化锆材料种类及应用[J]. 中国陶瓷, 44(4): 44−46. doi: 10.3969/j.issn.1001-9642.2008.04.014 |
[65] | 石明华, 刘彩利, 周军, 田锋, 张建军, 王文生, 李中奎. 2015. 锆及锆合金在工业领域的应用[J]. 热加工工艺, 44(18): 28−30. |
[66] | 宋家伟, 伍德明, 陈飞, 邓开章. 2021. 海南岛东部浅海表层沉积物锆、钛地球化学特征及资源潜力分析[J]. 中国矿业, 30(S1): 217−221. doi: 10.12075/j.issn.1004-4051.2021.S1.101 |
[67] | 孙宏伟, 王杰, 任军平, 张伟波, 唐文龙, 付超, 吴兴源, 党智财. 2019. 全球锆矿资源现状与利用趋势[J]. 矿产保护与利用, 39(5): 98−105. |
[68] | 孙宏伟, 许康康, 左立波, 任军平, 唐文龙, 古阿雷, 吴兴源, Chipilauka Mukofu, Alphet Phaskani Dokowe. 2023. 锆–钛矿产资源分布特点、类型、供需格局及开发利用现状[J]. 中国地质, 50(4): 1070−1081. |
[69] | Syre R P, 张孝全. 1987. 欧洲锆的发展(1945–1984年)[J]. 稀有金属材料与工程, (2): 71−80. |
[70] | 汪镜亮. 1997. 锆英石及其应用[J]. 矿产综合利用, (3): 43−49. |
[71] | 王登红. 2019. 关键矿产的研究意义、矿种厘定、资源属性、找矿进展、存在问题及主攻方向[J]. 地质学报, 93(6): 1189−1209. doi: 10.3969/j.issn.0001-5717.2019.06.003 |
[72] | 王登红, 孙艳, 代鸿章, 郭唯明, 赵芝, 赵汀, 李建康, 王成辉, 黄凡, 于扬, 李德先. 2019. 我国“三稀矿产”的资源特征及开发利用研究[J]. 中国工程科学, 21(1): 119−127. |
[73] | 王登红, 王瑞江, 李建康, 赵芝, 于扬, 代晶晶, 陈郑辉, 李德先, 屈文俊, 邓茂春, 付小方, 孙艳, 郑国栋. 2013. 中国三稀矿产资源战略调查研究进展综述[J]. 中国地质, 40(2): 361−370. doi: 10.3969/j.issn.1000-3657.2013.02.001 |
[74] | 王连红. 2004. ZrO2氧传感器的发展与应用[J]. 山东陶瓷, 27(2): 15−18. doi: 10.3969/j.issn.1005-0639.2004.02.004 |
[75] | 王汝成, 车旭东, 邬斌, 谢磊. 2020. 中国铌钽锆铪资源[J]. 科学通报, 65(33): 3763−3777. |
[76] | 王瑞江, 王登红, 李建康, 孙艳, 李德先. 2015. 稀有稀土稀散矿产资源及其开发利用[M]. 北京: 地质出版社, 1−429. |
[77] | 王一先, 赵振华. 1997. 巴尔哲超大型稀土铌铍锆矿床地球化学和成因[J]. 地球化学, 26(1): 25–26, 28, 30–36. |
[78] | 邬斌, 王汝成, 刘晓东, 郭国林, 宋振涛. 2018. 辽宁赛马碱性岩体异性石化学成分特征及其蚀变组合对碱性岩浆–热液演化的指示意义[J]. 岩石学报, 34(6): 1741−1757. |
[79] | 谢明材, 苏本勋, 王忠梅, 韩春明. 2020. 塔里木北缘与碱性岩有关的稀有—稀土矿床成矿作用研究[J]. 地质科学, 55(2): 420−438. doi: 10.12017/dzkx.2020.028 |
[80] | 幸世军. 2009. 浅析江西省龙南塔背风化壳型锆铪矿床地质特征[J]. 矿产与地质, 23(1): 70−72. doi: 10.3969/j.issn.1001-5663.2009.01.014 |
[81] | 杨武斌, 单强, 赵振华, 罗勇, 于学元, 李宁波, 牛贺才. 2011. 巴尔哲地区碱性花岗岩的成岩和成矿作用: 矿化和未矿化岩体的比较[J]. 吉林大学学报(地球科学版), 41(6): 1689−1704. |
[82] | 杨奕, 齐荣, 刘秀娟, 何玉生, 张固成. 2010. 海南岛昌化江河口与邻近海域锆、钛矿化远景及成矿地质条件分析[J]. 地质科技情报, 29(1): 80−85. |
[83] | 余君鹏, 吴义布, 梁明宏, 校培喜, 窦小雨. 2015. 阿尔金南缘地质填图新进展及对找矿的启示—据甘肃1∶5万莫坝尔等六幅区调[J]. 中国地质调查, 2(2): 40−47. |
[84] | 袁忠信, 李建康, 王登红. 2012. 中国稀土矿床成矿规律[M]. 北京: 地质出版社, 1–135. |
[85] | 张建文, 王海东, 龚文勇, 马崇振, 张华, 廖乾. 2019. 中国锆矿资源开发利用形势分析[J]. 矿产保护与利用, 39(5): 106−110. |
[86] | 张振芳, 陈秀法, 高爱红, 张振国. 2019. 锆资源形势分析及全球布局[J]. 中国矿业, 28(4): 50−56. |
[87] | 钟玉芳, 马昌前, 佘振兵. 2006. 锆石地球化学特征及地质应用研究综述[J]. 地质科技情报, 25(1): 27−34,40. |
Global distribution of zirconium reserves in 2022 (after USGS, 2023)
Production of zirconium concentrate and supply and demand of zirconium ore in China from 2014 to 2021 (Data source: China Customs)
Import and export quantity of zirconium ore in China during 2014 to 2022 (Data source: China Customs)
Distribution map of zirconium deposits in China (base map is zirconium geochemical map, after Wang Rucheng et al., 2020)
Geological diagram of Saima alkaline rock mass in Liaoning Province (modified from Wu Bin et al., 2018)
Geological diagram of 801 super−large deposit and 802 unmineralized rock mass in Balzhe area (modified from Yang Wubin et al., 2011)
Geologic sketch map of the distribution of alkaline pegmatites in the Yilanlik area, Xinjiang (modified from Xie Mingcai et al., 2020)
Cross section of geological line 88 of the Yushishan Nb–Ta–Zr–Hf–REE deposit in Gansu Province, northwestern China (modified from Jiang et al., 2020)
Geological profile of No.0 exploration line of Huashanzi deposit (modified from Feng Xuezhi, 2020)
Abnormal distribution area of zircon (modified from Song Jiawei et al., 2021)
Coastal placer metallogenic prospect zoning map of Shandong Province (modified from Chi Hongji et al., 2001)