METALLOGENIC CHARACTERISTICS OF SHAOXIEGOU TUNGSTEN-COPPER-MOLYBDENUM DEPOSIT IN EJINA QI, INNER MONGOLIA
-
摘要:
额济纳旗少斜沟钨铜钼矿赋存于石炭纪-二叠纪花岗岩类岩体与下石炭统绿条山组的接触带附近及岩体内. 矿化蚀变分带总体呈环状, 最外带为碳酸盐化、绿帘石化、绿泥石化; 次外带为夕卡岩化、角岩化、白钨矿化; 中带为硅化、云英岩化、辉钼矿化; 内带为硅化、孔雀石化、黄铜矿化. 由外向内成矿元素从高温到低温富集, 形成钨矿→钼矿→铜矿. 另外, 结合矿体特征、含矿岩体的矿石地球化学特征和锆石U-Pb测年资料等讨论了矿床的成因类型和成矿时代, 认为该矿床成因类型为斑岩型, 成矿时间为305.1±1.9 Ma, 为晚石炭世.
Abstract:The Shaoxiegou tungsten-copper-molybdenum deposit in Ejina Qi is occurred in the contact zone between the Carboniferous-Permian granitoid body and Lower Carboniferous Lyutiaoshan Formation, and in the nearby rock mass as well. The mineralized alteration zonation is generally annular, with the outermost zone of carbonatization, epidotization and chloritization, the secondary outer zone of skarnization, hornfelsization and scheelite mineralization, the middle zone of silicification, greisenization and molybdenite mineralization, and the inner zone of silicification, malachitization and chalcopyrite mineralization. From outside to inside, metallogenic elements are enriched from high temperature to low, forming tungsten deposit → molybdenum deposit → copper deposit. The paper also discusses the genetic type and metallogenic age of the deposit combined with the orebody characteristics, geochemical characteristics of ore-bearing rock mass and zircon U-Pb dating data. It is considered that the deposit is genetically of porphyry type, with the metallogenic time of 305.1±1.9 Ma, which was formed in Late Carboniferous.
-
-
表 1 少斜沟矿区矿体特征表
Table 1. Orebody characteristics of Shaoxiegou orefield
矿体编号 长度/m 厚度/m 品位/% 产状 形态 Mo1 330 Mo：0.45~1.00/0.72 Mo：0.037~0.149/0.114 南西翼210°∠20° 凸弧状 Mo2 350 Mo：0.72~2.17/1.44 Mo：0.073~0.166/0.143 北东翼30°∠40° 凸弧状 Mo3 280 Mo：0.80~0.71/0.75 Mo：0.106~0.160/0.135 北东翼30°∠45° 凸弧状 Mo4 200 Mo：0.53~0.93/0.73 Mo：0.030~0.066/0.048 北东翼30°∠（20~40°） 凸弧状 Mo4-1 120 Mo：0.94 Mo：0.135 210°∠20° 细脉状 Mo4-2 120 Mo：1.23 Mo：0.120 210°∠20° 细脉状 Mo5 240 Mo：0.94~1.05/1.00 Mo：0.041-0.292/0.159 北东翼30°∠40° 凸弧状 Mo6 100 Mo：1.00 Mo：0.032 51°∠63° 细脉状 Mo7 120 Mo：1.22~11.04/4.11 Mo：0.034~0.119/0.065 南西翼210°∠10°，北东翼30°∠40° 凸弧状 Mo8 120 Mo：0.93~1.00/0.96 Mo：0.058~0.194/0.110 南西翼210°∠20°，北东翼30°∠40° 凸弧状 Mo9 120 Mo：0.93~0.95/0.94 Mo：0.034~0.075/0.054 南西翼210°∠20°，北东翼30°∠40° 凸弧状 Mo10 120 Mo：0.90~0.95/0.92 Mo：0.050~0.135/0.094 南西翼210°∠20°，北东翼30°∠26° 凸弧状 Mo11 120 Mo：1.00~1.14/1.07 Mo：0.020~0.271/0.154 南西翼210°∠20°，北东翼30°∠26° 凸弧状 Mo12 120 Mo：1.73~7.00/3.51 Mo：0.011~0.058/0.031 南西翼210°∠8°，北东翼30°∠30° 凸弧状 Cu2：3.00 Cu2：0.101~0.133/0.104 Cu3：2.17~6.35/3.91 Cu3：0.106~0.119/0.109 Mo13 120 Mo：0.94~1.78/1.29 Mo：0.057~0.408/0.205 南西翼210°∠18°，北东翼30°∠26° 凸弧状 Mo14 120 Mo：1.37~2.78/2.07 Mo：0.050~0.070/0.060 南西翼210°∠18°，北东翼30°∠26° 凸弧状 Mo15 120 Mo：1.74~3.82/2.58 Mo：0.062~0.128/0.031 南西翼210°∠（27~29°），北东翼30°∠26° 凸弧状 Mo16 120 Mo：0.88~3.67/1.82 Mo：0.075~0.354/0.160 南西翼210°∠20°，北东翼30°∠26° 凸弧状 Mo17 120 Mo：1.31 Mo：0.119 210°∠26 细脉状 Cu1 50 Cu：1.50 Cu：0.12~0.15/0.13 北东翼20°∠40° 凸弧状 Cu4 50 Cu：1.40 Cu：0.299 北东翼30°∠35° 凸弧状 W1 100 WO3：0.40~4.55/2.47 WO3：0.064~0991/0.366 350°∠45° 脉状 W2 260 WO3：0.90 WO3：0.048 50°∠78° 脉状 W3 280 WO3：1.00 WO3：0.077 11°∠69° 脉状 W4 650 WO3：0.40~4.95/2.41 WO3：0.064~0.407/0.112 0°∠（45~50°） 脉状 W5 330 WO3：1.40 WO3：0.066 330°∠78° 脉状 W6 150 WO3：1.60 WO3：0.039~0.109/0.065 355°∠53° 脉状 W7 430 WO3：0.7~1.00/0.85 WO3：0.092~0.218/0.166 0°∠（44~72°） 脉状 注：厚度、品位表示为“最小值~最大值/平均值”. 
下载: 导出CSV
-
[1] 聂凤军, 屈文俊, 刘妍, 等. 内蒙古额勒根斑岩型钼(铜)矿化区辉钼矿铼-锇同位素年龄及地质意义[J]. 矿床地质, 2005, 24(6): 638-646. doi: 10.3969/j.issn.0258-7106.2005.06.007
Nie F J, Qu W J, Liu Y, et al. Re-Os isotopic age dating of molybdenite separates from Elegen porphyry Mo (Cu) mineralized area, northwestern Alxa, western Inner Mongolia[J]. Mineral Deposits, 2005, 24(6): 638-646. doi: 10.3969/j.issn.0258-7106.2005.06.007
[2] 杨岳清, 赵金花, 孟贵祥, 等. 内蒙古北山地区斑岩型钼矿的成岩成矿时代和形成环境探讨[J]. 地球学报, 2013, 34(4): 401-412.
Yang Y Q, Zhao J H, Meng G X, et al. Rock-forming and ore-forming ages as well as formation environments of porphyry molybdenum deposits in Beishan area, Inner Mongolia[J]. Acta Geoscientica Sinica, 2013, 34(4): 401-412.
[3] 聂凤军, 江思宏, 张义, 等. 中蒙边境中东段金属矿床成矿规律和找矿方向[M]. 北京: 地质出版社, 2007: 139-156.
Nie F J, Jiang S H, Zhang Y, et al. Metallogenic studies and prospecting orientation in central and eastern segments along China-Mongolia border[M]. Beijing: Geological Publishing House, 2007: 139-156.
[4] 聂凤军, 江思宏, 赵省民, 等. 内蒙古流沙山金(钼)矿床地质特征及矿床类型的划分[J]. 地质地球化学, 2002, 30(1): 1-7. doi: 10.3969/j.issn.1672-9250.2002.01.001
Nie F J, Jiang S H, Zhao X M, et al. Geological features and metallogenic type of the Liushashan gold (molybdenum) deposit in Ejin Qi (prefecture), western Inner Mongolia[J]. Geology-Geochemistry, 2002, 30(1): 1-7. doi: 10.3969/j.issn.1672-9250.2002.01.001
[5] 侯万荣, 聂凤军, 徐斌, 等. 内蒙古中西部钼多金属矿床地质特征及其动力学背景[J]. 地质与勘探, 2010, 46(5): 751-764. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT201005000.htm
Hou W R, Nie F J, Xu B, et al. Geological features and geodynamic background of the molybdenum polymetallic deposits in central-western Inner Mongolia[J]. Geology and Exploration, 2010, 46(5): 751-764. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT201005000.htm
[6] 彭振安, 李红红, 屈文俊, 等. 内蒙古北山地区小狐狸山钼矿床辉钼矿Re-Os同位素年龄及其地质意义[J]. 矿床地质, 2010, 29(3): 510-516. doi: 10.3969/j.issn.0258-7106.2010.03.012
Peng Z A, Li H H, Qu W J, et al. Molybdenite Re-Os age of Xiaohulishan molybdenum deposit in Beishan area, Inner Mongolia[J]. Mineral Deposits, 2010, 29(3): 510-516. doi: 10.3969/j.issn.0258-7106.2010.03.012
[7] 张雨莲, 许荣科, 陕亮, 等. 内蒙古北山地区小狐狸山钼矿辉钼矿Re-Os年龄和LA-ICP-MS锆石U-Pb年龄[J]. 地质通报, 2012, 31(2/3): 469-475.
Zhang Y L, Xu R K, Shan L, et al. Rock-forming and ore-forming ages of the Xiaohulishan molybdenum deposit in Beishan area, Inner Mongolia[J]. Geological Bulletin of China, 2012, 31(2/3): 469-475.
[8] 杨帅师, 王守光, 沈存利, 等. 内蒙古小狐狸山钼多金属矿床成岩成矿年龄及其地质意义[J]. 现代地质, 2012, 26(2): 261-268. doi: 10.3969/j.issn.1000-8527.2012.02.006
Yang S S, Wang S G, Shen C L, et al. Rock-forming and ore-forming ages of Xiaohulishan molybdenum-polymetallic deposit in Inner Mongolia and its geological significance[J]. Geoscience, 2012, 26(2): 261-268. doi: 10.3969/j.issn.1000-8527.2012.02.006
[9] 刘益康, 徐叶兵. 蒙古Oyu Tolgoi斑岩铜金矿的勘查[J]. 地质与勘探, 2003, 39(1): 1-4.
Liu Y K, Xu Y B. The prospecting and main features of Oyu Tolgoi porphyry Cu-Au deposit in Mongolia[J]. Geology and Prospecting, 2003, 39(1): 1-4.
[10] 张义, 聂凤军, 江思宏, 等. 中蒙边境欧玉陶勒盖大型铜-金矿床的发现及对找矿勘查工作的启示[J]. 地质通报, 2003, 22(9): 708-712. doi: 10.3969/j.issn.1671-2552.2003.09.014
Zhang Y, Nie F J, Jiang S H, et al. Discovery of the Ouyu Tolgoi copper-gold deposit in the Sino-Mongolia border region and its significance for mineral exploration[J]. Geological Bulletin of China, 2003, 22(9): 708-712. doi: 10.3969/j.issn.1671-2552.2003.09.014
[11] 侯万荣, 聂凤军, 江思宏, 等. 蒙古国查干苏布尔加大型铜-钼矿床地质特征及成因[J]. 地球学报, 2010, 31(3): 307-320.
Hou W R, Nie F J, Jiang S H, et al. The geology and ore-forming mechanism of the Tsagaan Suvarga large-size Cu-Mo porphyry deposit in Mongolia[J]. Acta Geoscientica Sinica, 2010, 31(3): 307-320.
[12] Watanabe Y, Stein H J. Re-Os ages for the Erdenet and Tsagaan Suvarga porphyry Cu-Mo deposits, Mongolia, and tectonic implications[J]. Economic Geology, 2000, 95(7): 1537-1542.
[13] 杨合群, 李英, 杨建国, 等. 北山造山带的基本成矿特征[J]. 西北地质, 2006, 39(2): 78-95. https://www.cnki.com.cn/Article/CJFDTOTAL-XBDI200602005.htm
Yang H Q, Li Y, Yang J G. Main metallogenic characteristics in the Beishan orogen[J]. Northwestern Geology, 2006, 39(2): 78-95. https://www.cnki.com.cn/Article/CJFDTOTAL-XBDI200602005.htm
[14] 黄超勇, 吴邦友, 瓮纪昌, 等. 东天山东戈壁特大型钼矿床的发现及意义[J]. 地质调查与研究, 2011, 34(4): 280-289.
Huang C Y, Wu B Y, Weng J C, et al. Discovery of the eastern Gobi hugesize molybdenum ore deposit and its prospecting significance in Eastern Tianshan[J]. Geological Survey and Research, 2011, 34(4): 280-289.
[15] 芮宗瑶, 刘玉琳, 王龙生, 等. 新疆东天山斑岩型铜矿带及其大地构造格局[J]. 地质学报, 2002, 76(1): 83-94.
Rui Z Y, Liu Y L, Wang L S, et al. The Eastern Tianshan porphyry copper belt in Xinjiang and its tectonic framework[J]. Acta Geologica Sinica, 2002, 76(1): 83-94.
[16] Shen P, Pan H D, Dong L H. Yandong porphyry Cu deposit, Xinjiang, China: Geology, geochemistry and SIMS U-Pb zircon geochronology of host porphyries and associated alteration and mineralization[J]. Journal of Asian Earth Sciences, 2014, 80: 197-217.
[17] 邵积东, 王惠, 张梅, 等. 内蒙古大地构造单元划分及其地质特征[J]. 西部资源, 2011, 8(3): 51-56. https://www.cnki.com.cn/Article/CJFDTOTAL-XBZY201102057.htm
Shao J D, Wang H, Zhang M, et al. Reparation of geotectonic element and geological characteristics in Inner Mongolia[J]. Western Resources, 2011, 8(3): 51-56. https://www.cnki.com.cn/Article/CJFDTOTAL-XBZY201102057.htm
[18] 彭振安, 李红红, 张诗启, 等. 内蒙古北山地区小狐狸山钼矿成矿岩体地球化学特征研究[J]. 地质与勘探, 2010, 46(2): 291-298.
Peng Z A, Li H H, Zhang S Q, et al. Geochemical characteristics of Mo-mineralized granite in the Xiaohulishan deposit, Beishan area, Inner Mongolia[J]. Geology and Exploration, 2010, 46(2): 291-298.
[19] 沈存利, 张梅, 于玺卿, 等. 内蒙古钼矿找矿新进展及成矿远景分析[J]. 地质与勘探, 2010, 46(4): 561-575.
Shen C L, Zhang M, Yu X Q, et al. New progresses in exploration of molybdenum deposits and analysis of mineralization prospect in Inner Mongolia[J]. Geology and Exploration, 2010, 46(4): 561-575.
[20] 聂凤军, 江思宏, 张义, 等. 中蒙边境及邻区斑岩型铜矿床地质特征及成因[J]. 矿床地质, 2004, 23(2): 176-189. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200402005.htm
Nie F J, Jiang S H, Zhang Y, et al. Geological features and origin of porphyry copper deposits in China-Mongolia border region and its neighboring areas[J]. Mineral Deposits, 2004, 23(2): 176-189. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200402005.htm
[21] 王之田, 秦克章. 中国大型铜矿床类型、成矿环境与成矿集中区的潜力[J]. 矿床地质, 1991, 10(2): 119-130. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ199102002.htm
Wang Z T, Qin K Z. Types, Metallogenic environments and potentialities of metallogenic provinces of large copper deposits in China[J]. Mineral Deposits, 1991, 10(2): 119-130. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ199102002.htm
[22] 朱明帅, Munkhtsengel B, 苗来成, 等. 戈壁天山-北山-天山斑岩型铜(金钼)矿床地质特征与成矿时代对比分析及意义[J]. 中国地质, 2014, 41(4): 1059-1079. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201404003.htm
Zhu M S, Munkhtsengel B, Miao L C, et al. A comparative analysis of geological characteristics and mineralization epochs of porphyry-type Cu (Au-Mo) deposits in Mongolian Gebi-Tianshan and Chinese Beishan-Tianshan and its significance[J]. Geology in China, 2014, 41(4): 1059-1079. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI201404003.htm
[23] 刘军, 黄波, 杨涛, 等. 全球超大型斑岩铜矿浅析[J]. 地质与资源, 2019, 28(4): 345-349, 400. http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract8358.shtml
Liu J, Huang B, Yang T, et al. Analysis on the super-large porphyry copper deposits in the world[J]. Geology and Resources, 2019, 28(4): 345-349, 400. http://manu25.magtech.com.cn/Jweb_dzyzy/CN/abstract/abstract8358.shtml
-
图(2)
表(1)
计量
- 文章访问数: 1288
- PDF下载数: 89
- 施引文献: 0